spencer road (hume road to regal drive), city of gosnells ... · at spencer road (hume road to...

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KC01103.000 1 | P a g e

Spencer Road (Hume Road to Regal

Drive), City of Gosnells

Median and turning pockets, Main Roads

WA Option B Alignment

Road Safety Audit

Stage 2 - Preliminary Design

Audit Ref: KC01103.000

Prepared for:

City of Gosnells

By:

Colin Kleyweg

Marina Kleyweg

Report Issue Date: 1/12/2019

OCM 17 DECEMBER 2019 APPENDIX 13.3.1E


KC01103.000 2 | P a g e

Safety Audit Document Control Sheet

Project Location: Spencer Road (Hume Road to Regal Drive), City of

Gosnells

Project Proposal: Median and turning pockets, Main Roads WA Option B

Alignment

Audit Stage: Stage 2 - Preliminary Design

Prepared for: City of Gosnells

Prepared by 1: Colin Kleyweg

Prepared by 2: Marina Kleyweg

Audit Team Leader: Colin Kleyweg

Audit Team Leader

Organisation:

KCTT

Audit Reference: KC01103.000

Report Issue Date: 1/12/2019

The Safety Audit Document Control Sheet Above Should be Completed Prior to Editing Any Other

Part of the Report Template



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1. INTRODUCTION

1.1 Scope of Audit

This Road Safety Audit has been undertaken in accordance with the requirements

contained in the Main Roads Western Australia Policy and Guidelines for Road

Safety Audit.

This report results from a Stage 2 - Preliminary Design Road Safety Audit carried out

on the proposed Median and turning pockets, Main Roads WA Option B Alignment

at Spencer Road (Hume Road to Regal Drive), City of Gosnells .

The background and objective of the proposed project is to install median and turning

pockets at Spencer Road from Hume Road to Regal Drive.

The Audit was undertaken by Colin Kleyweg and Marina Kleyweg of KCTT with

reference to the details provided in the Audit Brief.

The audit comprised an examination of the drawings and other information supplied

by the City of Gosnells as listed in Appendix C.

All the findings described in Section 2 of this report are considered by the audit team

to require action in order to improve the safety of the proposed project and to

minimise the risk of crash occurrence and reduce potential crash severity.

The audit team has examined and reported only on the road safety implications of the

project as presented and has not examined or verified the compliance of the design

to any other criteria.

1.2 The Audit Team

Auditor

No.

Name Role Organisation

326S Colin Kleyweg Audit Team Leader KCTT

514 Marina Kleyweg Audit Team Member KCTT



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The audit team visited the site on 26.11.2019. at 17:00. At the time of the site visit the

weather was sunny and the existing road surface was dry.

A night-time site visit was undertaken on 26.11.2019. at 20:00.

1.3 Specialist Advisors

No other specialist advisors were present at the time of audit.

1.4 Safe System Findings

The aim of Safe System Findings is to focus the Road Safety Audit process on

considering safe speeds and by providing forgiving roads and roadsides. This is to be

delivered through the Road Safety Audit process by accepting that people will always

make mistakes and by considering the known limits to crash forces the human body

can tolerate. This is to be achieved by focusing the Road Safety Audit on particular

crash types that are known to result in higher severity outcomes at relatively lower

speed environments to reduce the risk of fatal and serious injury crashes.

The additional annotation “IMPORTANT” shall be used to provide emphasis to any

road safety audit finding that has the potential to result in fatal or serious injury or

findings that are likely to result in the following crash types above the related speed

environment: head-on (>70 km/h), right angle (>50 km/h), run off road impact object

(>40 km/h), and crashes involving vulnerable road users (>30 km/h), as these crash

types are known to result in higher severity outcomes at relatively lower speed

environments.

The exposure and likelihood of crash occurrence shall then be considered for all

findings deemed “IMPORTANT” and evaluated based on an auditors professional

judgement. Auditors should consider factors such as, traffic volumes and

movements, speed environment, crash history and the road environment, and apply

road safety engineering and crash investigation experience to determine the

likelihood of crash occurrence. The likelihood of crash occurrence shall be

considered either “VERY HIGH”, “HIGH”, “MODERATE” or “LOW” and this additional

annotation shall be displayed following the “IMPORTANT” annotation on applicable

findings.

1.5 Previous Safety Audits

A Stage 2 Preliminary Design was undertaken by KCTT in May 2018 under the

reference number KC00845.000.

The items raised in the Stage 2 Preliminary Design safety audit have been addressed

with the exception of the items listed below. These items are discussed again in this

road safety audit.



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Earlier Audit Finding

Ref.

Description Audit Item Ref.

2.1

Length of left turn lane

deceleration lane –

Kenmare Avenue

2.1

2.6

No Left-turn splitter median

at intersection of Princeton

Court and Spencer Road

service road

2.3

2.7

No Left-turn splitter median

at intersection of Regency

Drive and Spencer Road

service road

2.4

2.9

Location of egress to

Spencer Road service road

too close to the left turn

deceleration lane entry to

Glyndebourne Avenue

2.7

2.10

Glyndebourne Avenue

Intersection angle to

Spencer Road (Left-Out)

2.8

2.13

No left turn splitter island at

intersection of Grenadier

Drive and Spencer Road

2.13

2.14

Lighting Conditions and

light pole locations on

northern side of Spencer

Road

2.14

1.6 Background Data

1.6.1 Crash History

A study of the recent crash history has been conducted in the vicinity of the proposed

project for the five-year period to the end of December 2018. This showed that there

were 44 reported crashes (11 midblock crashes and 33 intersection crashes) within the

extracted data for Spencer Street - Hume Road to Regal Drive (SLK 3.79 – 4.60) which

is summarised below:

Crash severity:

2 Hospital



KC01103.000 6 | P a g e

2 Medical

24 PDO Major

16 PDO Minor

MR Type:

3 Involving Overtaking

1 Involving Pedestrian

1 Entering / Leaving Driveway

39 Unknown

Light Conditions:

35 Daylight

3 Dawn or Dusk

5 Dark - Street Lights On

1 Dark - Street Lights Not Provided

MR nature:

24 Rear End

3 Sideswipe Same Direction

11 Right Angle

1 Right Turn Thru

3 Hit Object

1 Non-Collision

1.6.2 Traffic and Speed Data

A summary of recent traffic data is provided below:

Location Vehicles per day

(% heavy vehicles) Date Source

Spencer Road –

South of Wilfred

Road

27,505

(3.4%) 2017/18 MRWA

Spencer Road –

north of Hume

Road

26,285

(N/A) Aug 2019

MRWA

(derived from

SCATS)

Spencer Road –

south of Hume

Road

25,306

(N/A) Aug 2019

MRWA

(derived from

SCATS)

Spencer Road

(East bound data)

11,601

(4.43%)

27/3/2014-

14/4/2014 City of Gosnells



KC01103.000 7 | P a g e

– 50m West of

Denham Way, front

of house no. 404

Spencer Road

(West bound data)

– 50m West of

Denham Way, front

of house no. 397

11,905

(3.18%)

27/3/2014-

14/4/2014 City of Gosnells

A summary of recent speed data is provided below:

Location Average Speed

(km/h)

85th Percentile

Speed (km/h)

Date Source

Spencer Road

– South of

Wilfred Road

55.7km/h 61.8km/h 03/05/2018 MRWA

Spencer Road

(East bound

data) - 50m

West of

Denham Way,

front of house

no. 404

60.3 km/h 65.9 km/h 27/3/2014-

14/4/2014

City of

Gosnells

Spencer Road

(West bound

data) - 50m

West of

Denham Way,

front of house

no. 397

59.9 km/h 65.2 km/h 27/3/2014-

14/4/2014

City of

Gosnells

1.6.3 Appendices

Appendix A – Audit Findings Location Plan

Appendix B – Audit Photographs

Appendix C – List of Documents Provided for the Audit

Appendix D – Corrective Action Report (CAR)



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2. ITEMS RAISED IN THIS STAGE 2 - PRELIMINARY DESIGN AUDIT

2.1 Finding – Length of Proposed Left-Turn Deceleration Lane to Kenmare Avenue

Length of left-turn deceleration lane does not conform to Austroads Guide to Road

Design for the speed environment in Spencer Road for vehicles to decelerate safely

within the deceleration lane. The reduced length of deceleration lane is due to the

presence of a bus stop, however with Spencer Road being a high frequency bus

route, particularly during peak hours this presents an additional conflict.

Justification of the finding:

There are two key risks with the shortened deceleration lane in Kenmare Avenue.

Firstly vehicles that enter the deceleration lane at full speed have insufficient distance

to slow down safely to the correct navigation speed to turn left into Kenmare Avenue

which increases the risk of rear-end accidents in the left turn deceleration lane.

Secondly with the presence of the bus stop at the entry to the shortened deceleration

lane, there is an increased risk of side swipe incidents between buses leaving the

bus stop and vehicles seeking to overtake the bus then turn left into the deceleration

lane.

Recommendation

The designer should either relocate the bus stop, place the bus stop within the

deceleration lane as per the design across the road where the bus stop is being

placed within an extended left turn deceleration lane for Hume Road intersection and

provide a correct length deceleration lane or remove the deceleration lane and force

vehicles to turn left from the kerbside lane. The provision of a shortened deceleration

lane that does not meet minimum standards is an additional hazard that should be

designed out.

[IMPORTANT | HIGH]

2.2 Finding – Proximity and Angle of the Spencer Road Service Road Access / Egress to the Bus Stop west of Kenmare Avenue

The proposed service road access / egress is directly behind the proposed bus stop

on Spencer Road on the approach to the Kenmare Avenue intersection. In the

present configuration with a shortened left turn deceleration lane, this creates a

conflict point with a higher percentage of vehicles performing a two-lane overtaking

manoeuvre during peak periods when buses are stationed in this bus stop than is

necessary for improved safety.

The angle of the entry of the service road to Spencer Road places vehicles exiting

from houses west of the egress in a position where they may be required to use their

rear view mirrors to judge speeds of oncoming traffic (heading eastbound in Spencer

Road). Angles of entry less than 70 degrees should be avoided in situations like this



KC01103.000 9 | P a g e

as the decreased angle can promote higher speed entries from the service road than

intended. For houses east of the proposed access / egress (i.e. Lots 503 and 504)

this places their vehicle in a position where they are almost facing oncoming traffic

and will be required to perform a hook turn.


Vehicles leaving this service road location will need to cross two lanes of traffic to

enter Spencer Road while a bus is parked in the proposed bus stop. In the first

paragraph describe the potential crash outcome related to the finding. E.g. There is a

risk of vehicles failing to give way whilst exiting the intersection which could result in

right angle crashes.

For vehicles that can exit the service road location when a bus is not present, the

current design allows for potentially higher speed exits due to the low angle entry to

Spencer Road. Whilst this design has the effect of being easy to navigate and offers

improved vehicular flow, the potential for a vehicle to attempt to accelerate into

Spencer Road is now possible. Under the current design, this location now has a

series of “obstacles” for drivers in Spencer Road to consider inclusive of: -

A. Stationary buses at the bus stop on the approach to Kenmare Avenue;

B. Vehicles seeking to overtake a stationary bus and cross two lanes of traffic into

the shortened Kenmare Avenue deceleration lane to turn left, whom may be

required to decelerate in the median-side lane;

C. Vehicles entering at differing speeds pending their house of origin from the

service road.

With relation to vehicles from Lots 503 and 504, this design points these vehicles at

an angle which is almost oncoming to vehicles in Spencer Road heading eastbound

towards Gosnells. This provides a fourth conflict within a 15 metre area on Spencer

Road and increases the chances of: -

side swipe incidents between vehicle – vehicle and vehicle – bus

rear end incidents between vehicles exiting the service road and stationary

buses, or decelerating vehicles seeking to enter the left turn deceleration lane

to Kenmare Avenue

right angle to head-on incidents between vehicles that appear to be oncoming

to eastbound traffic in Spencer Road exiting Lots 503 and 504.

Recommendation

The designer should either provide a correct length left turn deceleration lane with the

bus stop within the deceleration lane as per the bus stop on the opposite side of

Spencer Road which is located within the left turn deceleration lane approach to the

intersection of Regency Drive, or provide no deceleration lane for entry to Kenmare

Avenue. The designer should request SIDRA analysis of the intersection of Spencer



KC01103.000 10 | P a g e

Road and Kenmare Avenue to determine the number of daily left turn movements

into Kenmare Avenue, as the vehicular volumes may be low enough to justify the

removal of the left turn deceleration.

With relation to the angle of access from the service road and its proximity to the bus

stop, the designer should remodel the angle of access such that it has a minimum

entry of 70 degrees for eastbound vehicles into Spencer Road. This adjustment of

entry angle will also alleviate vehicles from Lots 503 and 504 entering Spencer Road

at an angle that more represents an angle of oncoming traffic.

[IMPORTANT | HIGH]

2.3 Finding – Provide Left-In / Left-Out Splitter Island at intersection of Princeton Court and Spencer Road Service Road

The allowance of left and right-turn movements from Princeton Court into the Service

Road is unnecessary and adds a widening of the service road that is unnecessary.

This service road should be modified such that it is westbound only, improving safety

and both within the service road environment and providing a clear flow for vehicles

to join Spencer Road. Further, the service road at present on the southern side of

Spencer Road appears to be partially two-way and partially one-way which presents

conflicts where a driver becomes confused with the section of service road where the

intent changes from two-way traffic to one-way only. This comment applies for the

service road intersections of Princeton Court, Regency Drive and Grenadier Drive.


The partial operation of this service road as a two-way service road between the

intersections of Princeton Court, Regency Drive and Grenadier Drive enables traffic

flow internally between these roads, however presents a potential issue for drivers

who seek to enter Spencer Road through a short section of one-way service road

east of Grenadier Drive. Due to the length of the service road, having three changes

of configuration between one-way, two-way and back to one-way again over a length

of approximately 200 metres develops a location where conflicts such as head-on

crashes could become an issue due to vehicles attempting to head east bound from

Princeton or Regency deciding to continue illegally through a short section of one-

way east of Grenadier.

Recommendation

Provide left in-left out median splitter islands at the intersection of Princeton,

Regency and Grenadier and re-design the service road in this location to be one-way

only with flow towards the west.

[IMPORTANT | HIGH]



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2.4 Finding – Provide Left-In / Left-Out Median Splitter Island at intersection of Regency Drive and Spencer Road Service Road

This Finding is similar to Finding No 2.3. The allowance of a full movement

intersection at this location and the design of a partial one-way and two-way service

road generates potential conflicts between vehicles entering and exiting the service

road.












Recommendation

Provide left-in / left-out median splitter islands at the intersections of Princeton Court,

Regency Drive and Grenadier Drive to the Spencer Road service road and re-design

the service road as one-way westbound only.

[IMPORTANT | HIGH]

2.5 Finding – Provide Left-In / Left-Out Median Splitter Island at intersection of Grenadier Drive and Spencer Road Service Road

This finding is similar to Findings 2.3 and 2.4. The allowance of a full movement

intersection at this location and the design of a partial one-way and two-way service

road generates potential conflicts between vehicles entering and exiting the service

road.












KC01103.000 12 | P a g e



Recommendation

Provide left-in and left-out median splitter islands to the intersections of Princeton

Court, Regency Drive and Grenadier Drive with the Spencer Road service road and

re-design the service road as a one-way westbound service road only.

[IMPORTANT | HIGH]

2.6 Finding – Glyndebourne Avenue Left-Turn Deceleration Lane is too short

The proposed left-turn deceleration lane into Glyndebourne Avenue is too short and

does not meet Austroads Guidelines for the Spencer Road speed environment.


The proposed short left turn deceleration lane into Glyndebourne Avenue is too short

and does not meet Austroads Guidelines for the speed environment in Spencer Road

for deceleration to enter Glyndebourne Avenue.

Recommendation

The shortened deceleration lane is insufficient for safe deceleration and may lead to

increased rear-end accidents for vehicles seeking to turn left into Glyndebourne

Avenue. The deceleration lane should either be extended to meet the correct length

or removed in its entirety allowing vehicles to decelerate safely in the kerbside lane in

Spencer Road.

[IMPORTANT | HIGH]

2.7 Finding – Left-Out Aisle Width at Kenmare Avenue Median Splitter Island is too wide

The left-out aisle width at the intersection of Kenmare Avenue appears to be wide

and may promote excessive vehicular speeds through the intersection and into

Spencer Road. In our opinion, the road upgrades are to improve the vehicular flow

within Spencer Road and that all intersecting roads to Spencer Road within the

project area should be controlled with a yield (either Give Way or Stop) and vehicular

speeds controlled into Spencer Road. The designers should consider further options

to control both vehicular speeds from Kenmarke Avenue and direct access / egress

to Kenmare Avenue give the likely traffic volumes.




KC01103.000 13 | P a g e

Excessive vehicular speeds and vehicles failing to give way whilst exiting this

intersection has the potential to increase both the volume of side swipe and rear end

incidents for left-out traffic, with increased potential for right-angle crash incidences

for vehicles exiting Kenmare Avenue and attempting to enter the median-side lane in

Spencer Road. In addition, the severity of such incidences described above may also

be increased due to the increased potential exiting speed of vehicles from Kenmare

Avenue. As described above, the integrity, form and function of Spencer Road needs

to be the highest priority in this design as Spencer Road forms an important regional

connection between Cannington and Gosnells picking up the majority of the traffic

through Thornlie.

Recommendation

A number of Findings in this RSA can be addressed if the following design

amendment is considered by the designers: -

Option A – close the intersection of Kenmare Avenue with Spencer Road and

reconstruct an intersection with the Spencer Road service road.

This option will address previous commentary with relation to the number of access /

egress points to Spencer Road over a short length of road. In our opinion the number

of access / egress points in the design is too high and not in accordance with Main

Roads WA Guidelines for the design of major regional roads such as Spencer Road.

This project provides the opportunity to rationalise the number of access / egress

points to Spencer Road and in the opinion of the auditors this should be viewed by

the designers a key factor of success for this upgrade and enhancement project. The

rationalisation of access / egress points in this area would also improve safety for

buses and on-street cyclists in Spencer Road.

This design option would close three points of access / egress between Burnley

Street and Glyndebourne Avenue which in the opinion of the RSA audit team would

be a strong improvement to legibility, improve safety and allow for the development of

a one-way service road that improves general traffic flow for both the residents of

Spencer Road on the northern side of Spencer Road between Burnley Street and

Glyndebourne Avenue. This proposal also allows for the existing bus stop to be

maintained on the approach side to the Kenmare Avenue intersection and to have no

conflicts with left -turning traffic into Kenmare Avenue, plus allows for the construction

of an improved left-turn deceleration lane into Glyndebourne Avenue which will be

addressed in the next Finding.

Further, this would remove the necessity for the westbound hook turn on Spencer

Road. Motorists wanting to access Kenmare Avenue from Gosnells can easily access

Kenmare Avenue via Glyndebourne Avenue with minimal increase in trip time, whilst

greatly improving the form and function of Spencer Road in this location. A detailed

SIDRA analysis model would be required to verify these amendments, but we believe

this option is the best option to consider to rectify each of the issues represented in

the Findings.



KC01103.000 14 | P a g e

Option B – address the width of the aisle and the design of the median splitter

island at the intersection of Kenmare Avenue and provide a Give Way or Stop

yield at the intersection to highlight the road hierarchy.

[IMPORTANT | HIGH]

2.8 Finding – Left-Out Aisle Width at the Intersection of Glyndebourne Avenue is too Wide

Similar to Finding 2.7 above, the present angle of the median splitter island promotes

vehicular egress from Glyndebourne Avenue at a range of angles between

approximately 85 degrees and down to 45 degrees. In the opinion of the RSA

auditors this angle and width is too wide and the intersection control is insufficient to

slow approaching vehicles from Glyndebourne Avenue to the desired speed

environment.


Excessive vehicular speed from Glyndebourne Avenue for left-out movements

increases the potential for, and the severity of side swipe and rear-end accidents in

Spencer Road and increases the potential of right-angle incidents with vehicles from

Glyndebourne Avenue accessing the median-side lane.

Recommendation

The designers should review the splitter island median design to provide both a

suitable Give Way or Stop Yield and to provide a median splitter island design hat

points exiting vehicles at an angle of between 80 degrees and 75 degrees to a

minimum of 55 degrees whilst accommodating minimum aisle widths.

[IMPORTANT | LOW]

2.9 Finding – Left-Out aisle width at the Intersection of Denham Way is too wide

Similar to Findings 2.7 and 2.8 above, the present angle of the median splitter island

promotes vehicular egress from Denham Way at a range of angles between

approximately 85 degrees and down to as low as 45 degrees. In the opinion of the

RSA auditors this angle and width is too wide and the intersection control is

insufficient to slow approaching vehicles from Denham Way to the desired speed

environment.


Excessive vehicular speed from Glyndebourne Avenue for left-out movements

increases the potential for, and the severity of side swipe and rear-end accidents in

Spencer Road and increases the potential of right-angle incidents with vehicles from

Glyndebourne Avenue accessing the median-side lane.

Recommendation



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The designers should review the splitter island median design to provide both a

suitable Give Way or Stop Yield and to provide a median splitter island design that

points vehicles at and angle of between 75 degrees and 80 degrees at the splitter

island and up to a minimum of 50 degrees at the kerb return.

[IMPORTANT | LOW]

2.10 Finding – The number of access / egress points to Spencer Road on the northern side of the road between Glyndebourne Avenue and Denham Way is too high and should be rationalised.

As previously stated in the Findings, the RSA audit team sees this project as an

excellent opportunity to rationalise the number of access / egress points on Spencer

Road and to improve overall safety and function not just for vehicles, but also for

buses, pedestrians and cyclists within the overall road environment. East of

Glyndebourne Avenue these is no service road, therefore the present design allows

direct access / egress for four private properties fronting Spencer Road west of

Denham Way.


Increased vehicular access / egress points to a road of the regional importance of

Spencer Road increases the risk of side swipe and rear end accidents for left-in and

left-out turning movements.

Recommendation

The number of access / egress points in this location can be rationalised, delivering a

major improvement to road safety and function of Spencer Road. The following

options are recommended: -

Provide a service road to allow one-way (eastbound) access to Lot 194 to Lot

190 on the western approach to Denham Way)

Option A – continue the service road through the Denham Way intersection,

thereby closing the intersection of Denham Way directly to Spencer Road and

bring the service road egress either to Lot 183 as part of this stage of the

works, or if in the opinion of the design team it is safer to bring the egress

past the intersection of Regal Drive (to ensure the egress is not utilised for

unintentional 4-way movement at the intersection of Spencer Road and Regal

Drive, extend the service road past the intersection of Regal Drive to Lot 179.

Option B – Terminate the Service Road at a distance sufficient west of

Denham Way intersection to allow the installation of a correct length

deceleration lane should the City of Gosnells design team prefer Denham



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Way intersection is maintained with direct Left-In / Left-Out access egress to

Spencer Road.

The City of Gosnells should confirm SIDRA Analysis of current intersection

performance and modelling of road closures has been undertaken previously. In the

event that it has not previously been undertaken, we recommend that a detailed

SIDRA analysis model is developed to allow the City of Gosnells to develop improved

decision-making in this project.

[IMPORTANT | HIGH]

2.11 Finding – The Left Turn Deceleration Lane to Denham Way has insufficient length

The proposed left turn deceleration lane has insufficient length to allow vehicles

decelerate safely.


The proposed short left turn deceleration lane into Denham Way is too short and

does not meet Austroads Guidelines for the speed environment in Spencer Road for

deceleration to enter Denham Way.

Recommendation

The shortened deceleration lane is insufficient for safe deceleration and may lead to

increased rear-end accidents for vehicles seeking to turn left into Denham Way from

Spencer Road. The deceleration lane should either be extended to meet the correct

length or removed in its entirety allowing vehicles to decelerate safely in the kerbside

lane in Spencer Road. Or, as per the recommendations in Finding 2.10 the

intersection of Spencer Road and Denham Way should be removed in its entirety and

replaced with a service road that rationalises the number of access / egress points

between Lots 194 to 190 and Lots 184 to 178. In this location the designers therefore

have the opportunity to rationalise 11 driveway crossover points of access / egress

plus a Left-In / Left-Out intersection (i.e. 12 points of access / egress) to 1 left-in

access near Lot 194 Spencer Road and 1 left-out egress near Lot 178 Spencer

Road. In our opinion this rationalisation of access egress is the safest system

available.

[IMPORTANT | HIGH]

2.12 Finding – Rationalise the number of hook turns provided for westbound traffic from Gosnells in Spencer Road

The present design shows three hook turns at the following locations: -

a. west of Kenmare Avenue

b. west of Glyndebourne Avenue



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c. west of Denham Way

As previously mentioned in the Findings, the RSA audit team believe this project is

an excellent opportunity for the City of Gosnells to rationalise the number of conflict

points on Spencer Road. The number of hook turns should be reduced to one, with

the most logical west of the intersection of Glyndebourne Avenue or west of Kenmare

Avenue to allow for right turn movements from the service road that distributes traffic

from properties south of Spencer Road between Regency Drive and Grenadier Drive.


The proposed hook turns increase the potential for right-angled crashes in Spencer

Road.

Recommendation

In the opinion of the RSA audit team, the number of hook turns for westbound traffic

in Spencer Road should be reduced from the present three (3), to one (1). The most

logical location for the one hook turn is to the west of Kenmare Avenue which allows

for right turn opportunities for vehicles exiting the service road south of Spencer

Road. The hook turn then also services Glyndebourne Avenue movements.

[IMPORTANT | HIGH]

2.13 Finding – No left-turn splitter island in left turn deceleration lane at the intersection of Spencer Road and Grenadier Drive (south)

This Finding is repeated from the previous Road Safety Audit. The lack of a splitter

island increases the chances for side swipe and / or 90-degree crashes between

vehicles entering Grenadier Drive (south) from Spencer Road and enables vehicles

to enter the Spencer Road service road between Grenadier Drive and Regency Drive

from the left turn deceleration lane. In our opinion this design option is unacceptable

for the following reasons: -

A. This design allows for two-way movement in the service road between Grenadier

Drive and Regency Drive on the southern side of Spencer Road. The auditors

believe the service road should be one-way only to increase safety and to remove

unnecessary conflicts.

B. The design for two-way movement in the service road between Grenadier Drive

and Regency Drive necessitates an unnecessary widening of the intersection of

Grenadier Drive (south) and Spencer Road.

C. This unnecessary widening allows for vehicles to access / egress this intersection

in a configuration that resembles a 6-way intersection.




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Increased chance of side swipe and / or 90-degree crashes in Grenadier Drive

(south) due to lack of median splitter island. The opportunity for vehicles to interact at

this intersection as follows should be considered unacceptable: -

a. to access the service road from the Spencer Road left-turn deceleration lane

(westbound into Grenadier Drive) adds potential for right-angle incidents with

vehicles that are either approaching the intersection from Grenadier Drive

(northbound) or for vehicles entering Grenadier Drive in a right turn from Spencer

Road (eastbound)

b. to access the service road from the Spencer Road left-turn deceleration lane

(westbound into Grenadier Drive) adds potential for a head-on crash with vehicles

heading eastbound from the service road into Grenadier Drive / Spencer Road

intersection.

c. for vehicles heading eastbound from the service road into the Grenadier Drive /

Spencer Road there is insufficient room in the service road and insufficient offset to

Spencer Road to line the vehicle up correctly at the intersection for a right turn

movement. It is highly likely under this design that a vehicle can enter Spencer Road

at an angle of less than 45 degrees, which limits sight distances to the west and

introduces the potential for right angle to head on incidents for westbound vehicles in

Spencer Road and side swipe / rear end incidents in Spencer Road eastbound.

d. for vehicles heading eastbound from the service road into the Grenadier Drive /

Spencer Road there is insufficient room in the service road and insufficient offset to

Spencer Road for vehicles to turn sufficiently to be able to turn left into Spencer Road

and travel westbound towards Cannington.

Recommendation

This design option is poor and it is highly recommended that this design option does

not proceed any further than this Preliminary design phase. It is deficient in so many

respects due to it effectively being a 6-way intersection with insufficient control and

points vehicles incorrectly towards lanes and provides a series of conflicts that should

be considered unacceptable.

[IMPORTANT | HIGH]

2.14 Finding – Location of Existing Lighting and Power Poles through the Project Area

This Finding is repeated from the previous Road Safety Audit.


There are a significant number of night-time incidents on Spencer Road and the

lighting condition of the road at present is sub-standard for the number of vehicles

utilising this regional distributor. The existing location of the poles immediately

adjacent to the eastbound kerbline has the affect of impact sight distances to



KC01103.000 19 | P a g e

intersections and provides a series of additional hazards along the length of the

project for eastbound vehicles in Spencer Road.

Recommendation

Lighting should be a high priority in the next iteration of design, with removal of power

poles within 1 metre of the proposed eastbound kerb line on the northern side of

Spencer Road.

[IMPORTANT | HIGH]

2.15 Finding – Provision of a full-movement intersection west of Kenmare Road to the Spencer Road service road

The provision of a full-movement intersection at this location immediately west of the

intersection of Kenmare Avenue rationalises the number of access / egress points by

removing the hook turn east of Kenmare Avenue, however provides the following

issues with the configuration of the service road on the southern side of Spencer

Road: -

A. forces a full-length two-way service road on the southern side of Spencer Road

B. does not show a suitable median splitter island to prevent vehicles accessing /

egressing the intersection on the wrong side of the road

C. does not address the priority of vehicles in either direction (west or east) of the

intersection within the service road.


The provision of a full movement in this location requires significant internal

management within the service road to denote which users have priority to enter the

intersection first (either vehicles from the west or the east of the intersection within

the service road should be given priority to enter first). Given the service road only

appears to provide vehicular access / egress to Lot 112 Regency Drive, the priority

should be given to vehicles entering from the east.

The safety issues with this intersection configuration include: -

a. The lack of delineation for vehicles exiting / entering the intersection allows

vehicles to enter / exit on the wrong side of the road which increases the potential

for head-on incidents through the intersection

b. The lack of appropriate distance within the service road for 90 degree turns

impacts sight distances for right turn movements across Spencer Road,

particularly for vehicles exiting westbound from the Service Road. In this regard,

the auditors believe the City of Gosnells design is the better option with reduced

vehicular movements at this location minimising conflicts.



KC01103.000 20 | P a g e

Recommendation

The service roads should be designed with minimised allowed vehicular movements,

due to the short development distance for vehicles to access / egress at 90 degrees

to the intersection given the proximity of the service road to the kerbside lane in

Spencer Road.

The auditors believe that the City of Gosnells design in this location is more

appropriate with minor amendments as described in the City of Gosnells Rev B

Option.

should be a high priority in the next iteration of design, with removal of power poles

within 1 metre of the proposed eastbound kerb line on the northern side of Spencer

Road.

[IMPORTANT | HIGH]

2.16 Finding – Short sharp change in horizontal geometry on Spencer Road kerb string near Lot 193

The design shows a short, sharp change in horizontal geometry on Spencer Road

kerbside (eastbound) in front of Lot 193. The only reason the auditors can see for this

change in horizontal geometry is either an error in the design, or a localised widening

due to the presence of the hook turn.


The change in horizontal geometry is too short and sharp to be suitable for Austroads

Guide to Road Design for the vehicular volumes and the speed environment. Such

short, sharp changes of horizontal alignment are a surprise to drivers and may

contribute to increased side-swipe incidents through drivers reacting to the change in

geometry by changing lanes or not following the road alignment. The presence of this

change in road alignment coinciding with a location where a hook turn is introduced

provides two hazards for eastbound drivers in Spencer Road to negotiate in the one

location.

Recommendation

The change in horizontal geometry is unnecessary and should be removed as a

minimum. The designers should review the Findings and Recommendations in the

City of Gosnells Design Option B report where it was noted that the number of hook

turns in this project should be reduced to one (i.e. this hook turn should be removed)

and that the number of vehicular access / egress points between Glyndebourne

Avenue and properties east of Denham Way should be reduced from 12 to 2.

[IMPORTANT | HIGH]



KC01103.000 21 | P a g e

3. AUDIT TEAM STATEMENT

I hereby certify that the audit team have examined the documents listed in

Appendix C in undertaking this Road Safety Audit and confirm that this audit has

been carried out independently of the design team and in accordance with Main

Roads Policy and Guidelines for Road Safety Audit.

Audit Team Leader

Colin Kleyweg

Signature

Managing Director / Principal Civil

Engineer (Senior Road Safety Auditor No

326S)

KCTT

08 9441 2700 1/12/2019 Date

[email protected]



KC01103.000 22 | P a g e

APPENDIX A

AUDIT FINDINGS LOCATION PLAN



KC01103.000 23 | P a g e

Location Plan



KC01103.000 24 | P a g e

Audit Findings Plan part 1/2

Audit Findings Plan part 2/2



KC01103.000 25 | P a g e

APPENDIX B

AUDIT PHOTOGRAPHS



KC01103.000 26 | P a g e

Figure 1 Grenadier Drive & Spencer Road - view to the northwest

Figure 2 Service Road & Spencer Road (north of Princeton Ct) - view to the northwest



KC01103.000 27 | P a g e

Figure 3 Regency Drive & Spencer Road - view to the southeast

Figure 4 Regency Drive & Spencer Road - view to the northwest



KC01103.000 28 | P a g e

Figure 5 Glyndebourne Ave & Spencer Rd - view to the southeast

Figure 6 Glyndebourne Ave & Spencer Rd - view to the northwest



KC01103.000 29 | P a g e

Figure 7 Service Road & Spencer Road (north of Glyndebourne Ave) - view to the southeast

Figure 8 Service Road & Spencer Road (north of Glyndebourne Ave) - view to the northwest



KC01103.000 30 | P a g e

Figure 9 Service Road & Spencer Road (south of Kenmare Ave) - view to the southeast

Figure 10 Spencer Road & Kenmare Ave - view to the northwest



KC01103.000 31 | P a g e

Figure 11 Spencer Road & Kenmare Ave - view to the southeast

Figure 12 Grenadier Drive & Spencer Road (south) - view to the southeast from Service Road



KC01103.000 32 | P a g e

Figure 13 Service Road south of Kenmare Ave - view to the northwest

Figure 14 Burnley St & Spencer Rd - view to the northwest



KC01103.000 33 | P a g e

Figure 15 Burnley St & Spencer Rd - view to the northwest

Figure 16 Grenadier Drive & Spencer Road (north)- view to the northwest from Service Road



KC01103.000 34 | P a g e

Figure 17 Grenadier Drive & Spencer Road (north)- view to the southeast from Service Road

Figure 18 Regency Drive & Service Road (south) - view to the southeast from Service Road



KC01103.000 35 | P a g e

Figure 19 Regency Drive & Service Road (south) - view to the northwest from Service Road

Figure 20 Princeton Court & Service Road - view to the southeast from Service Road



KC01103.000 36 | P a g e

Figure 21 Princeton Court & Service Road - view to the northwest from Service Road

Figure 22 Service Road & Spencer Road (north of Princeton Ct) - view to the southeast



KC01103.000 37 | P a g e

Figure 23 Grenadier Drive & Spencer Road - view to the northwest

Figure 24 Grenadier Drive & Spencer Road (north)- view to the northwest from internal road



KC01103.000 38 | P a g e

Figure 25 Regency Drive & internal road (south) - view to the northwest from internal road

Figure 26 Princeton Court & Spencer Road Service - view to the southeast from the Service road



KC01103.000 39 | P a g e

Figure 27 Spencer Road service road & Spencer Road (north of Princeton Ct) - view to the northwest




KC01103.000 40 | P a g e


Figure 30 Spencer Road service road (north of Glyndebourne Ave) - view to the southeast



KC01103.000 41 | P a g e

Figure 31 Spencer Road service road & Spencer Road (north of Glynderbourne Ave) - view to the northwest

Figure 32 Spencer Road service road & Spencer Road (south of Kenmare Ave) - view to the southeast



KC01103.000 42 | P a g e

Figure 33 Spencer Road & Kenmare Ave - view to the northwest

Figure 34 Burnley St & Spencer Rd - view to the southeast



KC01103.000 43 | P a g e

APPENDIX C LIST OF DOCUMENTS PROVIDED FOR THE AUDIT



KC01103.000 44 | P a g e

Document Ref. Document Title Scale Date

e3-19-31

Spencer Road Median and Turning Pockets – Hume Road to Regal Drive

Dual Service Road Concept

Option B Alignment (Main Roads WA)

Public Notification Plan

1:500 Sep 2019



KC01103.000 45 | P a g e

APPENDIX D

CORRECTIVE ACTION REPORT


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Co

rrec

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cti

on

Rep

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– S

pe

ncer

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ad

(H

um

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oad

to

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al D

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ed

ian

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urn

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po

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from

Prince

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th

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it is

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cle

ar

flow

fo

r ve

hic

les

to j

oin

Spe

nce

r R

oa

d.

Furt

her,

th

e s

erv

ice r

oa

d a

t pre

sen

t o

n t

he

so

uth

ern

sid

e

of

Sp

en

cer

Roa

d a

pp

ears

to b

e p

art

ially

tw

o-w

ay

an

d p

art

ially

o

ne-w

ay

wh

ich p

rese

nts

co

nflic

ts

wh

ere

a

d

rive

r b

eco

me

s co

nfu

sed

w

ith

the

sect

ion

of

serv

ice r

oa

d w

he

re t

he

inte

nt

cha

ng

es

from

tw

o-w

ay

traff

ic

to

on

e-w

ay

on

ly.

Th

is

com

me

nt

ap

plie

s fo

r th

e

serv

ice

roa

d

inte

rse

ctio

ns

of

Prin

ceto

n C

ou

rt,

Reg

en

cy D

rive

a

nd

Gre

na

die

r D

rive

.

Rec

om

me

nd

ati

on

Pro

vide l

eft

in-l

eft

out

me

dia

n s

plit

ter

isla

nd

s a

t

the

in

ters

ect

ion

o

f P

rin

ceto

n,

Reg

en

cy

an

d

Gre

na

die

r a

nd

re-d

esi

gn t

he

se

rvic

e r

oa

d i

n t

his

loca

tion

to

b

e o

ne-w

ay

on

ly w

ith f

low

to

wa

rds

the

we

st.

[IM

PO

RT

AN

T | H

IGH

]

Ch

oo

se a

n

item

.

2.4

–

Fin

din

g

–

Pro

vid

e

Le

ft-I

n

/ L

eft

-Ou

t M

ed

ian

S

pli

tter

Isla

nd

a

t in

ters

ecti

on

o

f R

eg

en

cy

Dri

ve

a

nd

S

pe

nc

er

Ro

ad

S

erv

ice

R

oa

d

Th

is F

ind

ing

is

sim

ilar

to F

ind

ing

No 2

.3.

Th

e

allo

wa

nce

of

a f

ull

mo

vem

en

t in

ters

ect

ion

at

this

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

50 | P

ag

e

loca

tion

an

d t

he

de

sig

n o

f a

pa

rtia

l o

ne-w

ay

an

d

two-w

ay

serv

ice

roa

d

ge

ne

rate

s p

ote

ntia

l co

nflic

ts b

etw

ee

n v

eh

icle

s e

nte

ring

an

d e

xitin

g

the

serv

ice r

oa

d.

Rec

om

me

nd

ati

on

Pro

vide

left

-in /

left

-out

me

dia

n s

plit

ter

isla

nd

s a

t

the

in

ters

ect

ion

s of

Prin

ceto

n

Cou

rt,

Reg

en

cy

Drive

an

d G

ren

adie

r D

rive

to

th

e S

pe

nce

r R

oa

d

serv

ice r

oa

d a

nd

re

-de

sig

n t

he

serv

ice r

oa

d a

s

on

e-w

ay

we

stb

ou

nd

on

ly.

[IM

PO

RT

AN

T | H

IGH

]

Ch

oo

se a

n

item

.

2.5

–

Fin

din

g

–

Pro

vid

e

Le

ft-I

n

/ L

eft

-Ou

t M

ed

ian

S

pli

tter

Isla

nd

a

t in

ters

ecti

on

o

f G

ren

ad

ier

Dri

ve

a

nd

S

pe

nce

r R

oa

d S

erv

ice

R

oa

d

Th

is f

ind

ing

is

sim

ilar

to F

ind

ing

s 2

.3 a

nd

2.4

.

Th

e a

llow

an

ce o

f a

fu

ll m

ove

me

nt

inte

rse

ctio

n a

t

this

loca

tion

an

d t

he d

esi

gn

of

a p

art

ial o

ne-w

ay

an

d

two-w

ay

serv

ice

ro

ad

g

en

era

tes

pote

ntial

conflic

ts b

etw

ee

n v

eh

icle

s e

nte

ring

an

d e

xitin

g

the

serv

ice r

oa

d.

Ch

oo

se a

n

item

.

Rec

om

me

nd

ati

on

Pro

vide

left

-in a

nd

left-o

ut

me

dia

n s

plit

ter

isla

nd

s

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

51 | P

ag

e

to t

he i

nte

rsect

ion

s of

Prince

ton

Cou

rt,

Reg

en

cy

Drive

a

nd

G

ren

adie

r D

rive

w

ith

the

S

pe

nce

r

Roa

d

serv

ice

roa

d

an

d

re-d

esi

gn

th

e

serv

ice

roa

d a

s a

on

e-w

ay

we

stb

ou

nd

se

rvic

e r

oa

d o

nly

.

[IM

PO

RT

AN

T | H

IGH

]

2.6

– F

ind

ing

– G

lyn

de

bo

urn

e A

ve

nu

e L

eft

-T

urn

De

ce

lera

tio

n L

an

e i

s t

oo

sh

ort

Th

e

pro

pose

d

left

-turn

d

ece

lera

tion

la

ne

in

to

Gly

nd

ebo

urn

e A

ven

ue i

s to

o s

ho

rt a

nd

do

es

not

me

et

Aust

roa

ds

Gu

ide

line

s fo

r th

e

Spe

nce

r R

oa

d s

pe

ed

en

viro

nm

ent.

Ch

oo

se a

n

item

.

Rec

om

me

nd

ati

on

Th

e sh

ort

en

ed d

ece

lera

tion

la

ne

is

in

suff

icie

nt

for

safe

de

cele

ratio

n a

nd

ma

y le

ad

to

incr

ea

sed

rea

r-e

nd a

ccid

en

ts f

or

veh

icle

s se

ekin

g t

o t

urn

left

into

Gly

nd

ebo

urn

e A

ven

ue.

Th

e d

ece

lera

tion

lan

e

sho

uld

e

ithe

r b

e

ext

en

de

d

to

me

et

the

corr

ect

leng

th o

r re

mo

ved

in i

ts e

ntir

ety

allo

win

g

veh

icle

s to

de

cele

rate

sa

fely

in t

he

ke

rbsi

de

lan

e

in S

pe

nce

r R

oa

d.

[IM

PO

RT

AN

T |

HIG

H]

Ch

oo

se a

n

item

.

2.7

–

Fin

din

g

–

Le

ft-O

ut

Ais

le

Wid

th

at

Ch

oo

se a

n


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

52 | P

ag

e

Ken

ma

re

Av

en

ue

M

ed

ian

S

pli

tter

Isla

nd

is

to

o w

ide

Th

e

left

-ou

t a

isle

w

idth

a

t th

e

inte

rse

ctio

n

of

Ken

ma

re A

ven

ue a

pp

ears

to

be

wid

e a

nd

ma

y p

rom

ote

exc

ess

ive

ve

hic

ula

r sp

ee

ds

thro

ug

h t

he

inte

rse

ctio

n

an

d

into

S

pe

nce

r R

oa

d.

In

ou

r o

pin

ion

, th

e r

oa

d u

pg

rad

es

are

to

im

pro

ve t

he

ve

hic

ula

r flow

with

in S

pe

nce

r R

oa

d a

nd

th

at

all

inte

rse

ctin

g r

oa

ds

to S

pe

nce

r R

oa

d w

ithin

th

e

pro

ject

are

a sh

ou

ld b

e co

ntr

olle

d w

ith a

yi

eld

(e

ithe

r G

ive

Wa

y o

r S

top

) a

nd

ve

hic

ula

r sp

ee

ds

con

tro

lled

in

to

Spe

nce

r R

oa

d.

Th

e

de

sig

ne

rs

sho

uld

co

nsi

de

r fu

rth

er

op

tions

to c

ontr

ol

bo

th

veh

icu

lar

spe

eds

from

K

en

ma

rke

A

ven

ue a

nd

d

ire

ct a

cce

ss /

eg

ress

to

Ken

ma

re A

ven

ue g

ive

th

e lik

ely

tra

ffic

vo

lum

es

item

.

Rec

om

me

nd

ati

on

A

nu

mb

er

of

Fin

din

gs

in

this

R

SA

ca

n

be

ad

dre

sse

d i

f th

e f

ollo

win

g d

esi

gn

am

en

dm

en

t is

con

sid

ere

d b

y th

e d

esi

gne

rs:

-

Op

tion

A –

clo

se t

he in

ters

ect

ion o

f K

en

mare

Ave

nu

e w

ith S

pe

nce

r R

oa

d a

nd

re

con

stru

ct a

n

inte

rse

ctio

n w

ith t

he

Sp

en

cer

Roa

d s

erv

ice r

oa

d.

Th

is o

ptio

n w

ill a

dd

ress

p

revi

ou

s co

mm

enta

ry

with

re

latio

n t

o t

he

num

be

r of

acc

ess

/ e

gre

ss

po

ints

to

Spe

nce

r R

oa

d o

ver

a s

ho

rt l

en

gth

of

roa

d.

In

ou

r o

pin

ion

th

e

nu

mb

er

of

acc

ess

/

eg

ress

po

ints

in t

he

desi

gn

is

too

hig

h a

nd

not

in

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

53 | P

ag

e

acc

ord

an

ce w

ith M

ain

Roa

ds

WA

Gu

ide

line

s fo

r

the

d

esi

gn

of

majo

r re

gio

na

l ro

ad

s su

ch

as

Spe

nce

r R

oa

d.

Th

is

pro

ject

pro

vide

s th

e

op

port

un

ity t

o r

atio

na

lise t

he

nu

mb

er

of

acc

ess

/

eg

ress

p

oi n

ts

to

Spe

nce

r R

oa

d

an

d

in

the

op

inio

n o

f th

e a

ud

itors

th

is s

ho

uld

be

vie

we

d b

y

the

d

esi

gn

ers

a

ke

y fa

cto

r of

succ

ess

for

this

up

gra

de

an

d

en

hance

me

nt

pro

ject

. T

he

ration

alis

atio

n o

f a

cce

ss /

eg

ress

po

ints

in t

his

are

a w

ou

ld a

lso

im

pro

ve s

afe

ty f

or

bu

ses

an

d

on-s

tre

et cy

clis

ts in S

pe

nce

r R

oa

d.

Th

is d

esig

n o

pti

on

wo

uld

clo

se t

hre

e p

oin

ts o

f

acc

ess

/

eg

ress

b

etw

ee

n

Burn

ley

Str

ee

t a

nd

Gly

nd

ebo

urn

e A

ven

ue w

hic

h in

th

e o

pin

ion

of

the

R

SA

a

ud

it te

am

w

ou

ld

be

a

st

ron

g

imp

rove

me

nt

to

leg

ibili

ty,

imp

rove

sa

fety

a

nd

allo

w f

or

the

de

velo

pm

en

t of

a o

ne-w

ay

serv

ice

roa

d t

ha

t im

pro

ves

ge

ne

ral

traff

ic f

low

fo

r b

oth

the

resi

de

nts

of

Spe

nce

r R

oa

d o

n t

he

nort

he

rn

side

of

Spe

nce

r R

oa

d b

etw

ee

n B

urn

ley

Str

ee

t

an

d G

lyn

de

bo

urn

e A

ven

ue.

Th

is p

rop

osa

l a

lso

allo

ws

for

the e

xist

ing

bus

sto

p t

o b

e m

ain

tain

ed

on

th

e a

pp

roa

ch s

ide

to

th

e K

en

ma

re A

ven

ue

inte

rse

ctio

n a

nd

to

ha

ve n

o c

on

flic

ts w

ith l

eft

-

turn

ing

tra

ffic

into

Ken

ma

re A

ven

ue,

plu

s a

llow

s

for

the

co

nst

ruct

ion

of

an

im

pro

ved

le

ft-t

urn

de

cele

ratio

n

lan

e

into

G

lyn

de

bo

urn

e

Ave

nu

e

wh

ich w

ill b

e a

dd

ress

ed in

th

e n

ext

Fin

din

g.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

54 | P

ag

e

Fu

rth

er,

th

is w

ou

ld r

em

ove

th

e n

ece

ssity

for

the

we

stb

ou

nd

ho

ok t

urn

on

Spe

nce

r

Roa

d.

Mo

torist

s w

an

ting

to

a

cce

ss

Ken

ma

re

Ave

nu

e

from

G

osn

ells

ca

n

ea

sily

a

cce

ss

Ken

ma

re

Ave

nu

e

via

Gly

nd

ebo

urn

e

Ave

nu

e

with

m

inim

al

incr

ea

se

in

trip

tim

e,

wh

ilst

gre

atly

imp

rovi

ng

th

e

form

an

d

fun

ctio

n

of

Spe

nce

r R

oa

d in t

his

loca

tion

. A

deta

iled

SID

RA

an

aly

sis

mo

de

l w

ou

ld b

e r

eq

uire

d

to

verify

th

ese

a

me

nd

me

nts

, b

ut

we

be

lieve

th

is o

ptio

n i

s th

e b

est

optio

n t

o

con

sid

er

to

rect

ify

ea

ch

of

the

is

sue

s

rep

rese

nte

d in th

e F

indin

gs.

O

ption

B –

ad

dre

ss t

he w

idth

of

the

a

i sle

a

nd

th

e

de

sig

n

of

the

me

dia

n

split

ter

isla

nd

at

the

inte

r se

ctio

n o

f K

enm

are

A

ven

ue

an

d p

rov i

de

a G

ive

Way

or

Sto

p

yie

ld

at

the

in

ters

ect

ion

to

hig

hlig

ht

the

ro

ad

hie

rarc

hy.

[IM

PO

RT

AN

T |

HIG

H]

2.8

– F

ind

ing

– L

eft

-Ou

t A

isle

Wid

th a

t th

e

Inte

rse

cti

on

of

Gly

nd

eb

ou

rne

Av

en

ue

is

to

o

Ch

oo

se a

n


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

55 | P

ag

e

Wid

e

Sim

ilar

to F

ind

ing

2.7

ab

ove

, th

e p

rese

nt

ang

le

of

the m

ed

ian

sp

litte

r is

lan

d p

rom

ote

s ve

hic

ula

r e

gre

ss f

rom

Gly

nd

ebo

urn

e A

ven

ue a

t a

ra

ng

e o

f a

ng

les

betw

ee

n a

pp

roxi

ma

tely

85

de

gre

es

an

d

do

wn

to

45

de

gre

es.

In

th

e o

pin

ion

of

the

RS

A

au

dito

rs t

his

ang

le a

nd

wid

th is

too

wid

e a

nd

th

e

inte

rse

ctio

n

con

tro

l is

in

suff

icie

nt

to

slow

a

pp

roa

chin

g

veh

icle

s fr

om

G

lyn

de

bo

urn

e

Ave

nu

e t

o t

he d

esi

red s

pe

ed

en

viro

nm

en

t.

item

.

Rec

om

me

nd

ati

on

Th

e d

esi

gn

ers

sh

ou

ld r

evi

ew

th

e s

plit

ter

isla

nd

me

dia

n d

esi

gn

to

pro

vide

bo

th a

su

itab

le G

ive

Way

or

Sto

p

Yie

ld

an

d

to

pro

vide

a

m

ed

ian

split

ter

isla

nd

de

sig

n h

at

po

ints

exi

ting

ve

hic

les

at

an

a

ng

le

of

betw

ee

n

80

d

eg

ree

s a

nd

7

5

de

gre

es

to

a

min

imum

o

f 5

5

deg

ree

s w

hils

t

acc

om

mo

da

ting

min

imum

ais

le w

idth

s.

[IM

PO

RT

AN

T |

LO

W]

Ch

oo

se a

n

item

.

2.9

– F

ind

ing

– L

eft

-Ou

t ais

le w

idth

at

the

In

ters

ecti

on

of

Den

ham

Wa

y i

s t

oo

wid

e

Sim

ilar

to

Fin

din

gs

2.7

a

nd

2

.8

ab

ove

, th

e

pre

sen

t a

ng

le

of

the

m

ed

ian

sp

litte

r is

lan

d

pro

mote

s ve

hic

ula

r e

gre

ss f

rom

Den

ha

m W

ay

at

a

ran

ge

of

ang

les

be

twe

en

a

pp

roxi

ma

tely

8

5

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

56 | P

ag

e

de

gre

es

an

d d

ow

n t

o a

s lo

w a

s 4

5 d

eg

ree

s. I

n

the

op

inio

n o

f th

e R

SA

au

dito

rs t

his

ang

le a

nd

wid

th i

s to

o w

ide

an

d t

he

inte

rse

ctio

n c

on

tro

l is

insu

ffic

ien

t to

sl

ow

a

pp

roa

chin

g

veh

icle

s fr

om

Den

ha

m W

ay

to t

he

desi

red

sp

ee

d e

nvi

ron

me

nt.

Rec

om

me

nd

ati

on

Th

e d

esi

gn

ers

sh

ou

ld r

evi

ew

th

e s

plit

ter

isla

nd

me

dia

n d

esi

gn

to

pro

vide

bo

th a

su

itab

le G

ive

Way

or

Sto

p

Yie

ld

an

d

to

pro

vide

a

m

ed

ian

split

ter

isla

nd

de

sig

n t

hat

po

ints

ve

hic

les

at

an

d

an

gle

of

be

twe

en

75

de

gre

es

an

d 8

0 d

eg

rees

at

the

sp

litte

r is

lan

d a

nd

up

to

a m

inim

um

of

50

de

gre

es

at

the k

erb

retu

rn.

[IM

PO

RT

AN

T |

LO

W]

Ch

oo

se a

n

item

.

2.1

0

–

Fin

din

g

–

Th

e

nu

mb

er

of

ac

ces

s

/ e

gre

ss

po

ints

to

S

pe

nce

r R

oa

d

on

th

e

no

rth

ern

s

ide

of

the

ro

ad

b

etw

ee

n

Gly

nd

eb

ou

rne

A

ve

nu

e a

nd

D

en

ham

W

ay is

to

o h

igh

an

d s

ho

uld

be r

ati

on

alis

ed

.

As

pre

viou

sly

sta

ted

in t

he

F

ind

ing

s, th

e R

SA

au

dit

team

se

es

this

pro

ject

a

s a

n

exc

elle

nt

op

port

un

ity t

o r

atio

na

lise t

he

nu

mb

er

of

acc

ess

/

eg

ress

po

ints

on

Spe

nce

r R

oa

d a

nd

to

im

pro

ve

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

57 | P

ag

e

ove

rall

safe

ty a

nd

fu

nct

ion

no

t ju

st f

or

veh

icle

s,

bu

t a

lso

fo

r b

use

s,

pe

de

stria

ns

an

d

cycl

ists

with

in

the

o

vera

ll ro

ad

e

nvi

ron

me

nt.

E

ast

of

Gly

nd

ebo

urn

e A

ven

ue t

he

se i

s n

o s

erv

ice r

oa

d,

the

refo

r e

the

pre

sen

t d

esi

gn

a

llow

s d

ire

ct

acc

ess

/

eg

ress

fo

r fo

ur

priva

te

pro

pe

rtie

s

fro

ntin

g S

pen

cer

Ro

ad

we

st o

f D

en

ham

Wa

y.

Rec

om

me

nd

ati

on

Th

e n

um

ber

of

acc

ess

/

eg

ress

p

oin

ts in

th

is

loca

tion

ca

n b

e r

atio

na

lised

, d

eliv

erin

g a

ma

jor

imp

rove

me

nt

to

roa

d

safe

ty

an

d

fun

ctio

n

of

Spe

nce

r R

oa

d.

Th

e

follo

win

g

op

tions

are

reco

mm

en

de

d: -

Pro

vid

e a

se

rvic

e r

oa

d to a

llow

on

e-w

ay

(ea

stb

ou

nd)

acc

ess

to L

ot

19

4 t

o L

ot

19

0 o

n t

he

we

ste

rn a

pp

roa

ch t

o D

en

ha

m W

ay)

Op

tio

n A

– c

on

tin

ue t

he

se

rvic

e r

oa

d t

hro

ug

h

the

Den

ham

Wa

y in

ters

ect

ion

, th

ere

by

clo

sing

the

inte

rse

ctio

n o

f D

en

ham

Wa

y d

irect

ly t

o

Spe

nce

r R

oa

d a

nd b

rin

g th

e s

erv

ice r

oa

d e

gre

ss

eith

er

to L

ot

18

3 a

s p

art

of

this

sta

ge

of

the

wo

rks,

or

if in

th

e o

pin

ion

of

the d

esi

gn

te

am

it is

saf e

r to

bri

ng

th

e e

gre

ss p

ast

th

e in

ters

ect

ion

of

Reg

al D

rive

(to

en

sure

the

eg

ress

is n

ot

util

ise

d

for

un

inte

ntio

nal 4

-wa

y m

ove

me

nt a

t th

e

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

58 | P

ag

e

inte

rse

ctio

n o

f S

pe

nce

r R

oa

d a

nd

Reg

al D

rive

,

ext

en

d t

he

se

rvic

e r

oa

d p

ast

th

e in

ters

ect

ion

of

Reg

al D

rive

to L

ot

17

9.

O

ption

B –

Term

inate

the

Serv

ice

Roa

d a

t a

dis

tance

suff

icie

nt

we

st

of

Den

ha

m

Wa

y in

ters

ect

ion

to

allo

w t

he

inst

alla

tion

of

a c

orr

ect

len

gth

d

ece

lera

tion

la

ne

sh

ou

ld

the

Ci ty

of

Go

sne

lls d

esi

gn

te

am

pre

fer

Den

ha

m W

ay

inte

rse

ctio

n

is m

ain

tai n

ed

with

dire

ct L

eft

-In

/

Left

-Out

acc

ess

eg

ress

to

Spe

nce

r R

oa

d.

Th

e

City

of

Go

sne

lls

sho

uld

co

nfir

m

SID

RA

A

na

lysi

s o

f cu

rre

nt

inte

rsect

ion

pe

rform

an

ce

an

d

mod

elli

ng

of

roa

d

closu

res

ha

s b

een

u

nd

ert

ake

n

pre

viou

sly.

In

th

e e

ven

t th

at

it h

as

not

pre

viou

sly

be

en

un

dert

ake

n,

we

reco

mm

en

d

that

a

de

taile

d

SID

RA

an

aly

sis

mo

de

l is

de

velo

pe

d t

o a

llow

th

e

City

o

f G

osn

ells

to

d

eve

lop

im

pro

ved

de

cisi

on-m

akin

g in

th

is p

roje

ct.

[IM

PO

RT

AN

T |

HIG

H]


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

59 | P

ag

e

2.1

1 –

Fin

din

g –

Th

e L

eft

Tu

rn D

ec

ele

rati

on

L

an

e t

o D

en

ha

m W

ay h

as

in

su

ffic

ien

t le

ng

th

Th

e

pro

pose

d

left

tu

rn

de

cele

ratio

n

lan

e

ha

s

insu

ffic

ien

t le

ng

th to

a

llow

ve

hic

les

de

cele

rate

safe

ly.

Ch

oo

se a

n

item

.

Rec

om

me

nd

ati

on

Th

e sh

ort

en

ed d

ece

lera

tion

la

ne

is

in

suff

icie

nt

for

safe

de

cele

ratio

n a

nd

ma

y le

ad

to

incr

ea

sed

rea

r-e

nd a

ccid

en

ts f

or

veh

icle

s se

ekin

g t

o t

urn

left

into

Den

ham

Wa

y fr

om

Spe

nce

r R

oa

d.

Th

e

de

cele

ratio

n l

an

e s

ho

uld

eith

er

be e

xte

nd

ed

to

me

et

the

corr

ect

leng

th o

r re

mo

ved

in its

en

tirety

allo

win

g

veh

icle

s to

d

ece

lera

te

safe

ly

in

the

kerb

sid

e l

an

e i

n S

pe

nce

r R

oa

d.

Or,

as

pe

r th

e

reco

mm

en

datio

ns

in

Fin

din

g

2.1

0

the

inte

rse

ctio

n o

f S

pe

nce

r R

oa

d a

nd

Den

ha

m W

ay

sho

uld

be

re

mo

ved

in i

ts e

ntir

ety

an

d r

ep

lace

d

with

a s

erv

ice r

oa

d t

hat

ration

alis

es

the n

um

ber

of

acc

ess

/ e

gre

ss p

oin

ts b

etw

ee

n L

ots

19

4 t

o

19

0 a

nd

L

ots

1

84 to

17

8.

In th

is lo

catio

n th

e

de

sig

ne

rs

the

refo

re

have

th

e

op

port

un

ity

to

ration

alis

e

11

drive

wa

y cr

oss

ove

r p

oin

ts

of

acc

ess

/

eg

ress

p

lus

a

Le

ft-I

n

/ L

eft-O

ut

inte

rse

ctio

n (

i.e.

12

po

ints

of

acc

ess

/ e

gre

ss)

to

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

60 | P

ag

e

1 left

-in a

cce

ss n

ea

r L

ot

19

4 S

pe

nce

r R

oa

d a

nd

1 l

eft

-ou

t eg

ress

ne

ar

Lot

17

8 S

pe

nce

r R

oa

d.

In

ou

r o

pi n

ion

th

is r

ation

alis

atio

n o

f a

cce

ss e

gre

ss

is t

he

safe

st s

yste

m a

vaila

ble

.

[IM

PO

RT

AN

T |

HIG

H]

2.1

2 –

Fin

din

g –

Rati

on

ali

se

th

e n

um

be

r o

f h

oo

k

turn

s

pro

vid

ed

fo

r w

estb

ou

nd

tr

aff

ic

fro

m G

os

ne

lls

in

Sp

en

ce

r R

oa

d

Th

e p

rese

nt

de

sig

n s

ho

ws

thre

e h

oo

k t

urn

s a

t

the

fo

llow

ing

loca

tions:

-

a.

we

st o

f K

enm

are

Ave

nu

e

b.

we

st o

f G

lyn

de

bo

urn

e A

ven

ue

c. w

est

of

Den

ham

Wa

y

As

pre

viou

sly

me

ntio

ne

d

in

the

F

ind

ing

s,

the

RS

A

au

dit

tea

m

be

lieve

th

is

pro

ject

is

a

n

exc

elle

nt

op

port

un

ity f

or

the

City

of

Go

sne

lls t

o

ration

alis

e

the

n

um

be

r of

conflic

t p

oin

ts

on

Spe

nce

r R

oa

d.

Th

e

nu

mb

er

of

ho

ok

turn

s

sho

uld

be

re

du

ced

to

one

, w

ith t

he

most

log

ical

we

st o

f th

e inte

rse

ctio

n o

f G

lyn

de

bo

urn

e A

ven

ue

or

we

st o

f K

en

mare

A

ven

ue to

a

llow

fo

r rig

ht

turn

m

ove

me

nts

fr

om

th

e

serv

ice

roa

d

that

dis

trib

ute

s tr

aff

ic

from

p

rop

ert

ies

sou

th

of

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

61 | P

ag

e

Spe

nce

r R

oa

d

be

twe

en

R

eg

en

cy

Drive

a

nd

Gre

na

die

r D

rive

.

Rec

om

me

nd

ati

on

In

the

o

pin

ion

o

f th

e

RS

A

au

dit

tea

m,

the

nu

mb

er

of

ho

ok tu

rns

for

we

stb

ou

nd

tr

aff

ic in

Spe

nce

r R

oa

d

sho

uld

b

e

red

uce

d

from

th

e

pre

sen

t th

ree

(3),

to

one

(1

). T

he

mo

st l

og

ical

loca

tion

for

the

on

e h

ook t

urn

is

to t

he

we

st o

f

Ken

ma

re

Ave

nu

e

wh

ich

a

llow

s

for

rig

ht

turn

op

port

un

itie

s fo

r ve

hic

les

exi

ting

th

e

serv

ice

roa

d s

ou

th o

f S

pe

nce

r R

oa

d.

Th

e h

ook t

urn

th

en

als

o

serv

ices

Gly

nd

ebo

urn

e

Ave

nu

e

mo

vem

en

ts.

[IM

PO

RT

AN

T |

HIG

H]

3.1

F

ind

ing

– N

o l

eft

-tu

rn s

pli

tte

r is

lan

d i

n

left

tu

rn

de

ce

lera

tio

n

lan

e

at

the

in

ters

ecti

on

o

f S

pe

nc

er

Ro

ad

a

nd

G

ren

ad

ier

Dri

ve

(s

ou

th)

Th

i s

Fin

din

g

is

rep

ea

ted

fr

om

th

e

pre

viou

s R

oa

d S

afe

ty A

ud

it. T

he

lack

of

a s

plit

ter

isla

nd

incr

ea

ses

the c

ha

nce

s fo

r

side

sw

ipe

a

nd

/

or

90-d

eg

ree

cr

ash

es

be

twe

en

ve

hic

les

en

terin

g

Gre

na

die

r

Drive

(s

ou

th)

from

S

pen

cer

Roa

d

an

d

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

62 | P

ag

e

en

able

s ve

hic

les

to

en

ter

the

S

pe

nce

r

Roa

d

serv

ice

roa

d

be

twe

en

G

ren

adie

r

Drive

a

nd

R

eg

en

cy D

rive

fr

om

th

e le

ft

turn

de

cele

ration

lan

e.

In o

ur

op

inio

n t

his

de

sig

n

op

tion

is

un

acc

ep

tab

le

for

the

follo

win

g r

ea

son

s: -

D.

Th

is

de

sig

n

allo

ws

for

two-w

ay

mo

vem

en

t in

th

e

serv

ice

roa

d

be

twe

en

G

ren

adie

r D

rive

a

nd

Reg

en

cy D

rive

on

th

e s

ou

the

rn s

ide

of

Spe

nce

r R

oa

d.

Th

e

au

dito

rs

be

lieve

th

e

serv

ice

road

sh

ou

ld

be

on

e-w

ay

on

ly t

o i

ncr

ea

se s

afe

ty a

nd

to r

em

ove

un

ne

cess

ary

co

nflic

ts.

E.

Th

e d

esi

gn

fo

r tw

o-w

ay

mo

vem

en

t in

the

se

rvic

e r

oa

d b

etw

ee

n G

ren

adie

r

Drive

a

nd

R

eg

en

cy

Drive

ne

cess

itate

s a

n

un

nece

ssa

ry

wid

en

ing

o

f th

e

inte

rse

ctio

n

of

Gre

na

die

r D

rive

(so

uth

) a

nd

Spe

nce

r

Roa

d.

F.

Th

i s u

nn

ece

ssary

wid

en

ing

allo

ws

for

veh

i cle

s to

a

cce

ss

/ e

gre

ss

this


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

63 | P

ag

e

inte

rse

ctio

n

in

a

config

ura

tion

th

at

rese

mb

les

a 6

-wa

y in

ters

ect

ion.

Ju

sti

fic

ati

on

of

the f

ind

ing

:

Incr

ea

sed c

ha

nce

of

side

sw

ipe

an

d /

or

90-d

eg

ree

cr

ash

es

in

Gre

na

die

r D

rive

(so

uth

) d

ue

to

lack

of

me

dia

n

split

ter

isla

nd

. T

he

o

pp

ort

un

ity

for

veh

icle

s to

inte

ract

at

this

in

ters

ect

ion

a

s fo

llow

s

sho

uld

be

co

nsi

dere

d u

na

cce

pta

ble

: -

a.

to a

cce

ss th

e se

rvic

e ro

ad

fr

om

th

e

Spe

nce

r R

oa

d l

eft-t

urn

de

cele

ratio

n l

an

e

(we

stb

ou

nd

into

G

ren

ad

ier

Drive

) a

dd

s

po

ten

tial

for

rig

ht-

ang

le

inci

de

nts

w

ith

veh

icle

s th

at

are

eith

er

ap

pro

ach

ing

th

e

inte

rse

ctio

n

from

G

ren

ad

ier

Drive

(no

rth

bo

un

d)

or

for

veh

icle

s e

nte

ring

Gre

na

die

r D

rive

in

a

rig

ht

turn

fr

om

Spe

nce

r R

oa

d (

ea

stb

ou

nd

)

b.

to a

cce

ss th

e se

rvic

e ro

ad

fr

om

th

e

Spe

nce

r R

oa

d l

eft-t

urn

de

cele

ratio

n l

an

e

(we

stb

ou

nd

in

to

Gre

nad

ier

Drive

) a

dd

s

po

ten

tial

for

a

he

ad-o

n

cra

sh

with

veh

icle

s

he

adin

g

ea

stb

ou

nd

fro

m

the

serv

ice

roa

d

into

G

ren

ad

ier

Drive

/

Spe

nce

r R

oa

d in

ters

ect

ion

.

c. fo

r ve

hic

les

he

adin

g e

ast

bo

un

d f

rom


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

64 | P

ag

e

the

serv

ice r

oa

d i

nto

th

e G

ren

ad

ier

Drive

/ S

pe

nce

r R

oa

d t

he

re is

insu

ffic

ien

t ro

om

in t

he

se

rvic

e r

oa

d a

nd

in

suff

icie

nt

off

set

to S

pe

nce

r R

oa

d t

o l

ine

th

e v

eh

icle

up

corr

ect

ly

at

the

in

ters

ect

ion

fo

r a

rig

ht

turn

mo

vem

en

t. It is

hig

hly

lik

ely

un

der

this

d

esi

gn

th

at

a

veh

icle

ca

n

en

ter

Spe

nce

r R

oa

d a

t a

n a

ng

le o

f le

ss t

ha

n

45

de

gre

es,

wh

ich

lim

its s

igh

t d

ista

nce

s

to t

he

we

st a

nd

intr

od

uce

s th

e p

ote

ntial

for

rig

ht

ang

le t

o h

ea

d o

n i

nci

de

nts

fo

r

we

stb

ou

nd

ve

hic

les

in

Spe

nce

r R

oa

d

and

si

de

sw

ipe

/

rea

r e

nd

in

cide

nts

in

Spe

nce

r R

oa

d e

ast

bo

und

.

d.

for

veh

icle

s h

ea

din

g e

ast

bo

un

d f

rom

the

serv

ice r

oa

d i

nto

th

e G

ren

ad

ier

Drive

/ S

pe

nce

r R

oa

d t

he

re is

insu

ffic

ien

t ro

om

in t

he

se

rvic

e r

oa

d a

nd

in

suff

icie

nt

off

set

to

Spe

nce

r R

oa

d

for

veh

icle

s to

tu

rn

suff

icie

ntly

to

b

e

ab

le

to

turn

le

ft

into

Spe

nce

r R

oa

d

an

d

tra

vel

west

bo

un

d

tow

ard

s C

an

nin

gto

n.

Rec

om

me

nd

ati

on

Th

i s d

esi

gn

optio

n is

po

or

an

d it

is h

igh

ly

reco

mm

en

de

d

that

this

d

esi

gn

o

ptio

n

do

es

no

t p

roce

ed

a

ny

furt

he

r th

an

th

is

Pre

limin

ary

de

sig

n p

ha

se.

It i

s d

efici

en

t


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

65 | P

ag

e

in s

o m

an

y re

spe

cts

du

e t

o i

t eff

ect

ive

ly

be

ing

a

6-w

ay

inte

rse

ctio

n

with

insu

ffic

ien

t co

ntr

ol

an

d

po

ints

ve

hic

les

inco

rre

ctly

to

wa

rds

lan

es

an

d p

rovi

de

s a

serie

s of

conflic

ts

tha

t sh

ou

ld

be

con

sid

ere

d u

na

cce

pta

ble

.

[IM

PO

RT

AN

T |

HIG

H]

3.2

F

ind

ing

–

Lo

cati

on

o

f E

xis

tin

g

Lig

hti

ng

an

d P

ow

er

Po

les

th

rou

gh

th

e

Pro

jec

t A

rea

Th

is

Fin

din

g

is

rep

ea

ted

fr

om

th

e

pre

viou

s R

oa

d S

afe

ty A

ud

it.

Ju

sti

fic

ati

on

of

the f

ind

ing

:

Th

ere

are

a s

ign

ific

ant

nu

mb

er

of

nig

ht-

time

inci

de

nts

on

Spe

nce

r R

oa

d a

nd

th

e

ligh

ting

co

nd

ition

of

the

ro

ad

at

pre

sent

is

sub-s

tan

dard

fo

r th

e n

um

be

r of

veh

icle

s

util

isin

g

this

re

gio

na

l d

istr

ibu

tor.

T

he

exi

stin

g loca

tion

of

the p

ole

s im

me

dia

tely

ad

jace

nt

to th

e e

ast

bo

un

d kerb

line

h

as

the

aff

ect

of

imp

act

si

ght

dis

tan

ces

to

inte

rse

ctio

ns

an

d

pro

vid

es

a

serie

s of

ad

diti

on

al h

aza

rds

alo

ng

th

e len

gth

of

the

pro

ject

fo

r e

ast

bo

und

ve

hic

les

in S

pe

nce

r

Roa

d.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

66 | P

ag

e

Rec

om

me

nd

ati

on

Lig

htin

g s

ho

uld

be

a h

igh

prio

rity

in t

he

ne

xt i

tera

tion

of

de

sig

n,

with

re

mo

val

of

po

we

r p

ole

s w

ithin

1

metr

e

of

the

pro

po

sed

ea

stb

ou

nd

kerb

lin

e

on

th

e

no

rth

ern

sid

e o

f S

pe

nce

r R

oa

d.

[IM

PO

RT

AN

T |

HIG

H]

3.3

F

ind

ing

–

Pro

vis

ion

o

f a

fu

ll-

mo

ve

me

nt

inte

rse

cti

on

w

es

t o

f K

en

ma

re R

oa

d to

th

e S

pe

nce

r R

oa

d

se

rvic

e r

oa

d

Th

e

pro

visi

on

of

a

full-

mo

vem

ent

inte

r se

ctio

n a

t th

is lo

catio

n im

me

dia

tely

we

st

of

the

in

ters

ect

ion

of

Ken

mare

Ave

nu

e

ration

alis

es

the

n

um

be

r of

acc

ess

/ e

gre

ss p

oin

ts b

y re

mo

ving

th

e

ho

ok

turn

e

ast

of

Ken

ma

re

Ave

nu

e,

ho

we

ver

pro

vide

s th

e

follo

win

g

issu

es

with

th

e c

onfig

ura

tion

of

the

serv

ice r

oa

d

on

th

e s

ou

thern

sid

e o

f S

pe

nce

r R

oa

d: -

A.

forc

es

a

full-

len

gth

tw

o-w

ay

serv

ice

roa

d

on

th

e

sou

the

rn

side

o

f S

pe

nce

r

Roa

d

B.

do

es

not

sho

w

a

suita

ble

m

ed

ian

split

ter

isla

nd

to

p

reve

nt

veh

icle

s


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

67 | P

ag

e

acc

ess

ing

/ e

gre

ssin

g t

he

inte

rse

ctio

n o

n

the

wro

ng

sid

e o

f th

e r

oad

C.

do

es

not

ad

dre

ss

the

p

rio

rity

of

veh

icle

s in

eith

er

dire

ctio

n (

we

st o

r e

ast

)

of

the

in

ters

ect

ion

w

ithin

th

e

serv

ice

roa

d.

Ju

sti

fic

ati

on

of

the f

ind

ing

:

Th

e p

rovi

sio

n o

f a

fu

ll m

ove

me

nt

in t

his

loca

tion

re

qu

ire

s si

gn

ific

ant

inte

rna

l

ma

nag

em

ent

with

in th

e se

rvic

e ro

ad

to

de

note

wh

ich

use

rs h

ave

prio

rity

to

en

ter

the

inte

rsect

ion

first

(e

ithe

r ve

hic

les

fro

m

the

we

st o

r th

e e

ast

of

the

inte

rse

ctio

n

with

in t

he

serv

ice r

oa

d s

ho

uld

be

giv

en

prio

rity

to

en

ter

firs

t).

Giv

en

th

e s

erv

ice

roa

d o

nly

a

pp

ea

rs

to

pro

vide

ve

hic

ula

r

acc

ess

/

eg

ress

to

L

ot

11

2

Reg

en

cy

Drive

, th

e

prio

rity

sh

ou

ld

be

g

ive

n

to

veh

icle

s e

nte

rin

g fro

m t

he

ea

st.

Th

e sa

fety

is

sue

s w

ith th

is in

ters

ect

ion

config

ura

tion in

clu

de

: -

c.

Th

e la

ck of

de

line

atio

n fo

r ve

hic

les

exi

ting

/

ente

ring

th

e

inte

rse

ctio

n

allo

ws

veh

icle

s to

en

ter

/ e

xit

on

th

e


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

68 | P

ag

e

wro

ng

si

de

of

the

ro

ad

w

hic

h

incr

ea

ses

the

p

ote

ntial

for

he

ad-o

n

inci

de

nts

thro

ug

h th

e inte

rse

ctio

n

d.

Th

e

lack

of

ap

pro

pria

te

dis

tan

ce

with

in t

he

se

rvic

e r

oa

d f

or

90

deg

ree

turn

s im

pa

cts

sig

ht

dis

tan

ces

for

rig

ht

turn

m

ove

me

nts

a

cross

S

pe

nce

r

Roa

d,

pa

rtic

ula

rly

for

veh

icle

s e

xitin

g

we

stb

ou

nd

fro

m t

he

Serv

ice R

oa

d.

In

this

reg

ard

, th

e a

ud

itors

be

lieve

th

e

City

of

Go

sne

lls d

esi

gn

is

the

be

tte

r

op

tion

with

re

du

ced

ve

hic

ula

r

mo

vem

en

ts

at

this

lo

catio

n

min

imis

ing

co

nflic

ts.

Rec

om

me

nd

ati

on

Th

e

serv

ice

roa

ds

sho

uld

b

e

de

sig

ne

d

with

m

inim

ise

d

allo

we

d

veh

icu

lar

mo

vem

en

ts,

du

e

to

the

sh

ort

de

velo

pm

en

t d

ista

nce

fo

r ve

hic

les

to

acc

ess

/

eg

ress

at

90

de

gre

es

to

the

inte

rse

ctio

n

giv

en

th

e

pro

xim

ity

of

the

serv

ice

roa

d

to

the

ke

rbsi

de

lan

e

in

Spe

nce

r R

oa

d.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

69 | P

ag

e

Th

e

au

dito

rs

be

lieve

th

at

the

C

ity

of

Go

sne

lls d

esi

gn i

n t

his

loca

tion

is

mo

re

ap

pro

priate

w

ith m

ino

r a

me

nd

me

nts

a

s

de

scribe

d i

n t

he C

ity o

f G

osn

ells

Rev

B

Op

tion

.

sho

uld

b

e

a

hig

h

priority

in

th

e

ne

xt

itera

tion

of

de

sig

n,

with

re

mo

val o

f p

ow

er

po

les

with

in

1

me

tre

of

the

pro

po

sed

ea

stb

ou

nd k

erb

lin

e o

n t

he

no

rth

ern

sid

e

of

Sp

en

cer

Roa

d.

[IM

PO

RT

AN

T |

HIG

H]

3.4

F

ind

ing

–

Sh

ort

s

ha

rp

ch

an

ge

in

ho

rizo

nta

l g

eo

metr

y o

n S

pe

nce

r R

oa

d

ke

rb s

trin

g n

ea

r L

ot

193

The

desi

gn s

ho

ws

a s

hort

, sh

arp

ch

ang

e

in h

orizo

nta

l g

eo

metr

y on

Spe

nce

r R

oa

d

kerb

sid

e (

ea

stb

ou

nd

) in

fro

nt

of

Lot

19

3.

Th

e o

nly

re

aso

n t

he

au

dito

rs c

an

se

e f

or

this

ch

an

ge

in

h

orizo

nta

l g

eom

etr

y is

eith

er

an

err

or

in

the

d

esi

gn,

or

a

loca

l ised

wid

en

ing

du

e t

o t

he p

rese

nce

of

the

ho

ok

turn

.

Ju

sti

fic

ati

on

of

the f

ind

ing

:

Th

e c

ha

ng

e in h

orizo

nta

l g

eom

etr

y is

to

o

sho

rt

an

d

sha

rp

to

be

su

itab

le

for


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

70 | P

ag

e

Aust

roa

ds

Gu

ide

to

Road

Desi

gn

for

the

veh

icu

lar

volu

me

s a

nd

th

e

spe

ed

en

viro

nm

en

t. S

uch

sh

ort

, sh

arp

ch

ang

es

of

ho

rizo

nta

l a

lign

me

nt

are

a s

urp

rise

to

drive

rs a

nd

ma

y co

ntr

ibu

te t

o i

ncr

ea

sed

side-s

wip

e

inci

de

nts

th

roug

h

drive

rs

rea

ctin

g to

th

e ch

ang

e in

g

eo

metr

y b

y

cha

ng

ing

lan

es

or

not

follo

win

g t

he

ro

ad

alig

nm

ent.

Th

e p

rese

nce

of

this

ch

ang

e

in

roa

d

alig

nm

en

t co

inci

din

g

with

a

loca

tion

wh

ere

a h

oo

k tu

rn i

s in

tro

duce

d

pro

vide

s tw

o

ha

zard

s fo

r e

ast

bo

un

d

drive

rs i

n S

pe

nce

r R

oad

to

neg

otia

te i

n

the

on

e lo

catio

n.

Rec

om

me

nd

ati

on

Th

e

cha

ng

e

in

ho

rizo

nta

l g

eom

etr

y is

un

nece

ssa

ry a

nd

sh

ou

ld b

e r

em

ove

d a

s

a m

inim

um

. T

he d

esi

gn

ers

sh

ou

ld r

evi

ew

the

F

ind

ing

s a

nd

Reco

mm

en

datio

ns

in

the

C

i ty

of

Gosn

ells

D

esi

gn

O

ption

B

rep

ort

w

he

re

it w

as

no

ted

th

at

the

nu

mb

er

of

ho

ok

turn

s in

th

is

pro

ject

sho

uld

be

re

du

ced

to

on

e (

i.e.

this

ho

ok

turn

sh

ou

ld

be

re

mo

ved

) a

nd

th

at

the

nu

mb

er

of

veh

icu

lar

acc

ess

/

eg

ress

po

ints

b

etw

een

G

lyn

de

bo

urn

e

Ave

nu

e

an

d

pro

pe

rtie

s e

ast

of

Den

ha

m

Wa

y


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

71 | P

ag

e

sho

uld

be

re

duce

d fro

m 1

2 t

o 2

.

[IM

PO

RT

AN

T |

HIG

H]


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

72 | P

ag

e

2.1

3 –

Fin

din

g –

No

left

-tu

rn s

pli

tte

r is

lan

d i

n

left

tu

rn

de

ce

lera

tio

n

lan

e

at

the

in

ters

ecti

on

o

f S

pe

nc

er

Ro

ad

a

nd

G

ren

ad

ier

Dri

ve

(s

ou

th)

Th

is

Fin

din

g

is

rep

ea

ted

fr

om

th

e

pre

viou

s R

oa

d S

afe

ty A

ud

it. T

he

lack

of

a s

plit

t er

isla

nd

incr

ea

ses

the c

ha

nce

s fo

r

side

sw

ipe

a

nd

/

or

90-d

eg

ree

cr

ash

es

be

twe

en

ve

hic

les

en

terin

g

Gre

na

die

r

Drive

(s

ou

th)

from

S

pen

cer

Roa

d

an

d

en

able

s ve

hic

les

to

en

ter

the

S

pe

nce

r

Roa

d

serv

ice

roa

d

betw

ee

n

Gre

na

die

r

Drive

a

nd

R

eg

en

cy D

rive

fr

om

th

e le

ft

turn

de

cele

ration

lan

e.

In o

ur

op

inio

n t

his

de

sig

n

op

tion

is

un

acc

ep

tab

le

for

the

follo

win

g r

ea

son

s: -

G.

Th

is

de

sig

n

allo

ws

for

two-w

ay

mo

vem

en

t in

th

e

serv

ice

roa

d

be

twe

en

G

ren

adie

r D

rive

a

nd

Reg

en

cy D

rive

on

th

e s

ou

the

rn s

ide

of

Spe

nce

r R

oa

d.

Th

e

au

dito

rs

be

lieve

th

e

serv

ice

road

sh

ou

ld

be

on

e-w

ay

on

ly t

o i

ncr

ea

se s

afe

ty a

nd

to r

em

ove

un

ne

cess

ary

co

nflic

ts.

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

73 | P

ag

e

H.

Th

e d

esi

gn

fo

r tw

o-w

ay

mo

vem

en

t in

the

se

rvic

e r

oa

d b

etw

ee

n G

ren

adie

r

Drive

a

nd

R

eg

en

cy

Drive

ne

cess

itate

s a

n

un

nece

ssa

ry

wid

en

i ng

o

f th

e

inte

rse

ctio

n

of

Gre

na

die

r D

rive

(so

uth

) a

nd

Spe

nce

r

Roa

d.

I.

Th

is u

nn

ece

ssary

wid

en

ing

allo

ws

for

veh

icle

s to

a

cce

ss

/ e

gre

ss

this

inte

rse

ctio

n

in

a

config

ura

tion

th

at

rese

mb

les

a 6

-wa

y in

ters

ect

ion.

Rec

om

me

nd

ati

on

Th

is d

esi

gn

optio

n is

po

or

an

d it

is h

igh

ly

reco

mm

en

de

d

that

this

d

esi

gn

o

ptio

n

do

es

no

t p

roce

ed

a

ny

furt

he

r th

an

th

is

Pre

limin

ary

de

sig

n p

ha

se.

It i

s d

efici

en

t

in s

o m

an

y re

spe

cts

du

e t

o i

t eff

ect

ive

ly

be

ing

a

6-w

ay

inte

rse

ctio

n

with

insu

ffic

ien

t co

ntr

ol

an

d

po

ints

ve

hic

les

inco

rre

ctly

to

wa

rds

lan

es

an

d p

rovi

de

s a

serie

s of

conflic

ts

tha

t sh

ou

ld

be

con

sid

ere

d u

na

cce

pta

ble

.

[IM

PO

RT

AN

T |

HIG

H]

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

74 | P

ag

e

2.1

4 –

Fin

din

g –

Lo

ca

tio

n o

f E

xis

tin

g L

igh

tin

g

an

d P

ow

er

Po

les

th

rou

gh

th

e P

roje

ct

Are

a

Th

is

Fin

din

g

is

rep

ea

ted

fr

om

th

e

pre

viou

s R

oa

d S

afe

ty A

ud

it.

Ch

oo

se a

n

item

.

Rec

om

me

nd

ati

on

Lig

htin

g s

ho

uld

be

a h

igh

prio

rity

in t

he

ne

xt i

tera

tion

of

de

sig

n,

with

re

mo

val

of

po

we

r p

ole

s w

ithin

1

m

etr

e

of

the

pro

po

sed

ea

stb

ou

nd

kerb

lin

e

on

th

e

no

rth

ern

sid

e o

f S

pe

nce

r R

oa

d.

[IM

PO

RT

AN

T |

HIG

H]

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

75 | P

ag

e

2.1

5 –

Fin

din

g –

Pro

vis

i on

of

a f

ull

-mo

ve

me

nt

inte

rse

cti

on

we

st

of

Ken

ma

re R

oa

d t

o

the

Sp

en

ce

r R

oa

d s

erv

ice

ro

ad

Th

e

pro

visi

on

of

a

full-

mo

vem

ent

inte

rse

ctio

n a

t th

is lo

catio

n im

me

dia

tely

we

st

of

the

in

ters

ect

ion

of

Ken

mare

Ave

nu

e

ration

alis

es

the

n

um

be

r of

acc

ess

/ e

gre

ss p

oin

ts b

y re

mo

ving

th

e

ho

ok

turn

e

ast

of

Ken

ma

re

Ave

nu

e,

ho

we

ver

pro

vide

s th

e

follo

win

g

issu

es

with

th

e c

onfig

ura

tion

of

the

serv

ice r

oa

d

on

th

e s

ou

thern

sid

e o

f S

pe

nce

r R

oa

d: -

A.

forc

es

a

full-

len

gth

tw

o-w

ay

serv

ice

roa

d

on

th

e

sou

the

rn

side

o

f S

pe

nce

r

Roa

d

B.

do

es

not

sho

w

a

suita

ble

m

ed

ian

split

ter

isla

nd

to

p

reve

nt

veh

icle

s

acc

ess

ing

/ e

gre

ssin

g t

he

inte

rse

ctio

n o

n

the

wro

ng

sid

e o

f th

e r

oad

C.

do

es

not

ad

dre

ss

the

p

rio

rity

of

veh

i cle

s in

eith

er

dire

ctio

n (

we

st o

r e

ast

)

of

the

in

ters

ect

ion

w

ithin

th

e

serv

ice

roa

d.

Ch

oo

se a

n

item

.

Rec

om

me

nd

ati

on

C

ho

ose

an


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

76 | P

ag

e

Th

e

serv

ice

roa

ds

sho

uld

b

e

de

sig

ne

d

with

m

inim

ise

d

allo

we

d

veh

icu

lar

mo

vem

en

ts,

du

e

to

the

sh

ort

de

velo

pm

en

t d

ista

nce

fo

r ve

hic

les

to

acc

ess

/

eg

ress

at

90

de

gre

es

to

the

inte

rse

ctio

n

giv

en

th

e

pro

xim

ity

of

the

serv

ice

roa

d

to

the

ke

rbsi

de

la

ne

in

Spe

nce

r R

oa

d.

Th

e

au

dito

rs

be

lieve

th

at

the

C

ity

of

Go

sne

lls d

esi

gn i

n t

his

loca

tion

is

mo

re

ap

pro

priate

w

ith m

ino

r a

me

nd

me

nts

a

s

de

scribe

d i

n t

he C

ity o

f G

osn

ells

Rev

B

Op

tion

.

sho

uld

b

e

a

hig

h

priority

in

th

e

ne

xt

itera

tion

of

de

sig

n,

with

re

mo

val o

f p

ow

er

po

les

with

in

1

me

tre

of

the

pro

po

sed

ea

stb

ou

nd k

erb

lin

e o

n t

he

no

rth

ern

sid

e

of

Sp

en

cer

Roa

d.

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

77 | P

ag

e

2.1

6

–

Fin

din

g

–

Sh

ort

s

harp

c

han

ge

in

h

ori

zon

tal

ge

om

etr

y o

n S

pe

nce

r R

oa

d

ke

rb s

trin

g n

ea

r L

ot

193

Th

e d

esi

gn s

ho

ws

a s

hort

, sh

arp

ch

ang

e

in h

orizo

nta

l g

eo

metr

y on

Spe

nce

r R

oa

d

kerb

sid

e (

ea

stb

ou

nd

) in

fro

nt

of

Lot

19

3.

Th

e o

nly

re

aso

n t

he

au

dito

rs c

an

se

e f

or

this

ch

an

ge

in

h

orizo

nta

l g

eom

etr

y is

eith

er

an

err

or

in

the

d

esi

gn,

or

a

loca

l ised

wid

en

ing

du

e t

o t

he p

rese

nce

of

the

ho

ok

turn

.

Ch

oo

se a

n

item

.

Rec

om

me

nd

ati

on

Th

e

cha

ng

e

in

ho

rizo

nta

l g

eom

etr

y is

un

nece

ssa

ry a

nd

sh

ou

ld b

e r

em

ove

d a

s

a m

inim

um

. T

he d

esi

gn

ers

sh

ou

ld r

evi

ew

the

F

ind

ing

s a

nd

R

eco

mm

en

datio

ns

in

the

C

ity

of

Gosn

ells

D

esi

gn

O

ption

B

rep

ort

w

he

re

it w

as

no

ted

th

at

the

nu

mb

er

of

ho

ok

turn

s in

th

is

pro

ject

sho

uld

be

re

du

ced

to

on

e (

i.e.

this

ho

ok

turn

sh

ou

ld

be

re

mo

ved

) a

nd

th

at

the

nu

mb

er

of

veh

icu

lar

acc

ess

/

eg

ress

po

ints

b

etw

ee

n

Gly

nd

eb

ou

rne

A

ven

ue

an

d

pro

pe

rtie

s e

ast

of

Den

ha

m

Wa

y

sho

uld

be

re

duce

d fro

m 1

2 t

o 2

.

Ch

oo

se a

n

item

.


KC

TT

(T

rad

ing

as

Tra

ffic

an

d T

ran

sp

ort

Pty

Ltd

) |

AB

N:

35

148 9

70 7

27

| P

ER

TH

: 7 /

10

Whip

ple

Str

eet B

alc

atta

WA

602

1 |

BE

LG

RA

DE

: 23

Hila

ndars

ka,

Beogra

d 1

100

0 |

|

PH

ON

E:

08

94

41 2

700

| E

MA

IL:

off

ice@

kctt.c

om

.au |

WE

B:

ww

w.k

ctt.

com

.au

|

KC

01

103

.00

0

79 | P

ag

e

Co

rrec

tive A

cti

on

Rep

ort

- S

pe

nc

er

Ro

ad

(H

um

e R

oad

to

Reg

al D

rive

), C

ity o

f G

osn

ells

- M

ed

ian

an

d t

urn

ing

po

ck

ets

, M

ain

R

oad

s W

A O

ptio

n B

Alig

nm

en

t

Sta

ge

2 -

Pre

lim

ina

ry D

es

ign

NO

TE

:

T

his

C

orr

ect

ive

A

ctio

n R

ep

ort

is

to

b

e re

ad

in

co

nju

nct

ion

w

ith th

e fu

ll R

oa

d S

afe

ty A

ud

it R

ep

ort

a

nd

its

find

ing

s a

nd

reco

mm

en

datio

ns.

T

he a

sse

t o

wn

ers

(M

RW

A a

nd

/or

LG

A)

mu

st

be in

form

ed

of

the

se f

ind

ing

s, r

ecom

me

nd

atio

ns a

nd p

rop

osed a

ction

s.

It

em

s n

ot

un

der

the

re

spo

nsi

bili

ty

of

this

p

roje

ct

rep

rese

nta

tive

m

ust

b

e

forw

ard

ed

to

th

e

pe

rso

ns

/ ag

en

cie

s

wh

o

are

resp

on

sib

le.

Th

ese

fin

din

gs a

nd

re

co

mm

en

dati

on

s h

ave

be

en

co

ns

ide

red

, a

nd

th

e a

cti

on

s lis

ted

will

be t

ake

n a

cc

ord

ing

ly.

Res

po

ns

ible

Pro

jec

t R

ep

res

en

tati

ve

Co

mp

an

y /

Ag

en

cy /

Div

isio

n

Po

sit

ion

D

ate

As

se

t O

wn

er

Rep

res

en

tati

ve

Co

mp

an

y /

Ag

en

cy /

Div

isio

n

Po

sit

ion

D

ate


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