traffic assessment proposed residential development 42 … · 42 – 66 junction road, schofields....

TRAFFIC ASSESSMENT PROPOSED RESIDENTIAL DEVELOPMENT

42 - 66 JUNCTION ROAD SCHOFIELDS

Ref: 15-149

MAY 2016

COPYRIGHT: The concepts and information contained within this document are the property of Thompson Stanbury Associates. Use or copying of this document in whole or in part without the written

permission of Thompson Stanbury Associates constitutes an infringement of copyright.

Thompson Stanbury Associates Page

Junction Road, Schofields 15-149

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TABLE OF CONTENTS PAGE NO.

1. INTRODUCTION................................................................................................ 3

2. SURROUNDING ROAD NETWORK .............................................................. 5

2.1 PRECINCT PLANNING .......................................................................................... 5

2.2 42 - 66 JUNCTION ROAD, SCHOFIELDS (SUBJECT SITE) ....................................... 7

2.2.1 Site Location .............................................................................................. 7

2.2.2 Site Description .......................................................................................... 7

2.2.3 Existing Uses .............................................................................................. 8

2.2.4 Surrounding Uses....................................................................................... 8

2.3 SURROUNDING ROAD NETWORK ........................................................................ 8

2.3.1 Road Hierarchy .......................................................................................... 8

2.3.1.1 Existing Surrounding Road Network ..................................................... 8

2.3.1.2 Planned Road Network ....................................................................... 9

2.2.2 Traffic Volumes and Conditions .............................................................. 13

2.2.3 Traffic Control ......................................................................................... 13

2.4 PUBLIC TRANSPORT .......................................................................................... 13

3. PROPOSED DEVELOPMENT ....................................................................... 15

3.1 BUILT FORM ..................................................................................................... 15

4. ACCESS & INTERNAL CONSIDERATIONS .............................................. 17

4.1 VEHICULAR ACCESS ......................................................................................... 17

4.2 PARKING PROVISION ......................................................................................... 19

4.2 PARKING PROVISION ......................................................................................... 19

4.3 INTERNAL CIRCULATION AND MANOEUVRABILITY .......................................... 20

4.4 SITE SERVICING ................................................................................................ 21

5. CONCLUSION .................................................................................................. 23

APPENDICES

1. Swept Path Plans



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1. INTRODUCTION The Practice of Thompson Stanbury Associates has been commissioned by Jencaring

JW Development Pty Ltd.to prepare a Traffic & Transport Impact Assessment

accompanying a Development Application (DA) lodged with Blacktown City

Council. The subject DA proposes the demolition of existing site structures and the

construction of a residential flat building development containing eight apartment

buildings (A - H) comprising 703 apartments within three parcels of land, located at

42 – 66 Junction Road, Schofields.

The abovementioned proposal is to be serviced by a series of new access roads (two

east-west local roads and two north-south local roads), which are generally consistent

with the Indicative Layout Plan (ILP) for the Riverstone Precinct prepared by the

Department of Planning & Infrastructure. It is acknowledged, however that the

proposed north-south road running through the centre of the site is an additional road

that represents a variation to the Riverstone Precinct ILP. This local access road will

effectively create two new intersections with the two abovementioned east-west local

roads at its northern and southern extremities.

The external traffic impacts of the subject proposal and indeed, the entire Riverstone

Precinct have been assessed by others as part of the Precinct Planning process on

behalf of the North West Growth Centre. The purpose of this report is therefore to

primarily assess the internal and immediately adjoining development traffic and

parking considerations. Specifically, this report:

Describes the planned road network in the immediate vicinity of the subject

development;

Assesses the suitability of the proposed direct vehicular access arrangements

based on standards specified by the Australian Standards;

Assesses the adequacy, or otherwise, of the proposed off-street parking

provision having regard to the rates specified by Blacktown City Council

Growth Centre Precincts DCP; and



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Assesses the proposed parking, internal circulation and servicing layout with

respect to internal circulation and vehicle manoeuvrability.

Throughout this report, reference is made to the following documents:

Australian Standard for Parking Facilities Part 1: Off-Street Parking (AS

2890.1-2004) Parking Facilities Part 2: Off-Street Commercial Vehicles

Facilities (AS2890.1-2002), Parking Facilities Part 3: Bicycle Parking

(AS2890.3-2015) and Parking Facilities Part 6: Off-Street Parking for People

with Disabilities (AS2890.6-2009);

Blacktown City Council’s Growth Centre Precincts Development Control

Plan 2014 and Schedule Two (Riverstone Precinct);

Road Delay Solution’s North West Growth Centre Indicative Layout Plan

Revision Traffic and Transport Model Year 2036; and

AECOM’s Schofields Precinct – Transport and Access Strategy.

Architectural plans have been prepared by Krikis Tayler Architects, which should be

read in conjunction with this report.



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2. SURROUNDING ROAD NETWORK 2.1 Precinct Planning The long-term strategic vision for future development within Metropolitan Sydney is

guided by the Sydney Metropolitan Strategy document The Metropolitan Plan for

Sydney 2036, released by the NSW Government in 2010. This document highlights

the planning challenges anticipated to be faced by the metropolitan area in the future,

with respect to residential growth and its subsequent impact on the economy,

employment, housing, transport, environment, resources and other public amenities.

The Riverstone Precinct formed the first stage in the North West Growth Centre

released for planning purposes. The precinct planning process examined the future use

of the land through specialist studies such as biodiversity, transport and access,

flooding and drainage, heritage, noise and odour, land capability, visual landscape,

bushfire and employment / retail opportunities. These technical studies assisted in the

determination of the location of various land uses such as residential, employment,

educational, recreational parks and others.

The above technical studies resulted in the formulation of the Riverstone Precinct

Indicative Layout Plan (ILP), which identifies the zoning of parcels of land within this

Precinct. Figure 1 overleaf illustrates the Riverstone Precinct ILP and the parcel of

land subject to this assessment.

The above planning process resulted in the preparation of Schedule 2 (Riverstone

Precinct) of the Blacktown City Council Growth Centre Development Control Plan

2014 by the Department of Planning & Infrastructure. This Development Control Plan

communicates the planning, design and environmental objectives and controls against

which Blacktown City Council will use to assess Development Applications.

One of the above technical studies which partially assisted with the precinct planning

was AECOM’s Schofields Precinct – Traffic and Access Strategy. This report

forecasted and analysed the future traffic impacts associated with the precinct

development and recommended appropriate infrastructure upgrades and other

measures to maximise the efficiency and safety of the future transportation system



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and surrounding road network within the suburb of Schofields, which forms part of

the overall Riverstone Precinct ILP.

FIGURE 1

SUBJECT SITE LOCATION WITHIN THE CONTEXT OF THE RIVERSTONE PRECINCT INDICATIVE LAYOUT PLAN

Source: Schedule Two (Riverstone Precinct) - Blacktown City Council Growth Centre Development Control Plan 2014

SUBJECT SITE



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The infrastructure and transport upgrades recommended in the vicinity of the subject

site within the Schofields Precinct – Traffic and Access Strategy report are as follows:

Upgrade of Schofields Road to provide a four lane arterial road capable of

accommodating two lanes of traffic in each direction to accommodate

increases in regional and local traffic as well as serve as a transit corridor;

Signalisation of the following intersections on Schofields Road:

- Junction Road as a T-junction;

- Railway Terrace (realigned) as a cross-junction; and

- Boundary Road (realigned) with Alex Avenue as a cross-junction.

Grade separation of the Blacktown/Windsor Railway Line with Schofields

Road with connection to South Street and to Richmond Road as part of the

Marsden Park precinct.

2.2 42 - 66 Junction Road, Schofields (Subject Site) 2.2.1 Site Location The subject site is situated on the western side of Junction Road, approximately 120m

north of its intersection with Schofields Road, Schofields. It is proposed to be

serviced by four new local access roads, with two roads adjoining the southern and

western property alignments, whilst the other two roads transverse across the centre of

the site, effectively subdividing the land into three separate allotments. This location

is illustrated within the Riverstone Precinct ILP, previously shown in Figure 1.

2.2.2 Site Description The subject site has an inclusive property address of 42 - 66 Junction Road,

Schofields, with a real property description of Lots 25 - 26 DP 13137 and Lot 22 DP

850117. The consolidated allotments effectively form a regular development site that

currently provides a single frontage to Junction Road of approximately 207m and a

depth extending west away from Junction Road of approximately 204m. The total

area of the site is 4.12ha.



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2.2.3 Existing Uses The subject site currently accommodates two detached residential dwellings and

associated outbuildings, being serviced by separate access driveways connecting with

Junction Road at the eastern property alignment.

2.2.4 Surrounding Uses The surrounding lands comprise a mixture of rural residential development and

undeveloped allotments located within large parcels of land similar to the subject site.

These rural allotments are to be transformed into a higher density urban precinct

planned for the Riverstone precinct, as part of the North West Growth Centre

development strategy.

The projected traffic generation associated with the proposed site improvements and

its potential impacts to the surrounding road network at full development in 2036 has

been incorporated within the future traffic impact assessment of the entire North West

Growth Centre, prepared by Road Delay Solutions within their publication of the

North West Growth Centre Indicative Layout Plan Revision Traffic and Transport

Model Year 2036.

2.3 Surrounding Road Network 2.3.1 Road Hierarchy 2.3.1.1 Existing Surrounding Road Network The following provides a description of the existing local road hierarchy in the

immediate vicinity of the subject site:

Junction Road

Junction Road currently performs a local Collector Road function under the care and

control of Blacktown City Council. In this regard, it has a north/south alignment,

providing connectivity between St Albans Road at its northern extremity and

Schofields Road at its southern extremity, forming T-junctions with both under

major/minor priority control with Junction Road forming the minor route.



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Junction Road provides a rural carriageway width of 8m, providing one through lane

of traffic in each direction between unsealed shoulders. Traffic flow within Junction

Road is governed by a pavement marked speed limit of 50km/h between Advance

Street and St Albans Road, with school zone restrictions of 40km/h being enforced

between 8.00am - 9.30am and between 2.30pm - 4.00pm in the vicinity of Schofields

Public School. Traffic flow within Junction Road between Advance Street and

Schofields Road and in the immediate of the subject site is governed by a speed limit

of 60km/h.

Schofields Road

Schofields Road currently provides a State Road function under the care and control

of Roads & Maritime Services. In this regard, it provides an east-west arterial

connection between Windsor Road, Rouse Hill in the east and Railway Terrace,

Schofields in the west, effectively linking the two adjoining residential suburbs within

Sydney’s north-western region. It had been up to the start of widening works, been

provided with a 9m wide pavement, providing one through lane of traffic in each

direction between unsealed road shoulders however with roadworks in progress

detours etc are in force to accommodate the road widening works . Traffic flow

within Schofields Road is governed by a sign posted speed limit of 60km/h generally

with specific road work speed zones to accommodate road detours etc.

2.3.1.2 Planned Road Network

The surrounding road hierarchy, layout and control measures are planned to be

generally adopted within the Riverstone Precinct, established within Schedule Two

(Riverstone Precinct) - Blacktown City Council’s Growth Centre Development

Control Plan 2014 (DCP 2014). Figure 2 overleaf illustrates the road network

defined within the Development Control Plan, whilst the following provides a

summary of the road network in the immediate vicinity of the subject site:

Junction Road

Junction Road is to continue performing a local collector function servicing

intersecting side roads and abutting developments. In this regard, it is planned to be

widened to provide an 11m wide pavement within a 20m wide road reserve. One



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through lane of traffic is to be provided in either direction in conjunction with parallel

parking along both kerb alignments. A 1.5m wide pedestrian footpath is proposed to

adjoin the subject development along the eastern property alignment. At its southern

extremity, Junction Road’s intersection with Schofields Road is to be upgraded to be

operated under traffic signal control with auxiliary turning lanes.

FIGURE 2 RIVERSTONE PRECINCT- PLANNED ROAD HIERARCHY

Source: Schedule Two (Riverstone Precinct) - Blacktown City Council Growth Centre Development Control Plan 2014

Schofields Road

The State Road functionality/hierarchy of Schofields Road within the surrounding

road network is to remain unchanged under DCP 2014. In this regard, Schofields

Road is currently being upgraded to provide a dual carriageway, providing two

through lanes of traffic in each direction, separated by a 15m wide central median.

SUBJECT SITE



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Local Roads 1 and 2

Two new east-west local roads (referred to as ‘Road 1’ and ‘Road 2’) are proposed to

be constructed in accordance with Riverstone Precinct ILP. These roads are designed

to perform a local access function, providing a connection between Junction Road in

the east and a planned new north/south aligned local road (referred to as ‘Road 3’) in

the west. Further, these two east-west local roads are to facilitate a northerly and

southerly access to another north/south local road (referred to as ‘Road 4’), proposed

as part of the subject development that runs through the centre of the site, which

signifies an alteration to the Riverstone Precinct ILP.

Roads 1 and 2 are proposed to provide an 11m wide undivided carriageway within a

18m wide road reserve which exceeds the minimum dimensions specified within DCP

2014. One through lane of traffic is proposed to be provided in either direction in

conjunction with formalised kerb and guttering along both sides of both roads. It

should be acknowledged that for this DA that only half road construction is proposed

for Road 2. The other half is to be constructed by other developers, when adjoining

lots to the south are to be redeveloped.

Road 3

Under DCP 2014, Road 3 is to have a north/south alignment that is to provide a

frontage to the site at the western property boundary. Road 3 is designated to provide

a connection between Advance Street in the north and an east/west road assigned with

a local access street function, under the Riverstone Precinct ILP, in the south. In the

immediate vicinity of the subject site, Road 3 is to intersection with Roads 1 and 2 at

the north-western and south-western corners of the site.

Road 3 is proposed to form an overall road reservation width of 18m, comprising a

pavement width of 11.0 m and verges of 3.5m abutting both sides of the road

respectively. One through lane of traffic is to be provided along both kerb alignments.

Similar to Road 2, only half road construction is proposed for Road 3 under this DA

The other half will be constructed by other when the adjoining lots to the west are re-

developed.



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Road 4

It has been previously acknowledged that another north-south aligned road (Road 4) is

to be constructed as part of the subject proposal, which represents a deviation from

the road configuration specified within DCP 2014. Road 4 is proposed to be

constructed to the same dimensions as the abovementioned roads (18m wide road

reservation comprising a 9m wide pavement between 3.5m wide verges). It is to

accommodate two lane two-way traffic flow in conjunction with parallel parking

along both kerb alignments.

Based on the location of this local road within the context of the site and the

surrounding road network, it is to perform a minor residential access function

primarily associated with servicing vehicular movements generated by three out of the

eight residential apartment buildings (denoted as Buildings C, D and E within Krikis

Tayler’s architectural plans) proposed within the subdivided lot occupying the south-

eastern portion of the subject site.

The combined development yield of apartment buildings C, D and E is 287 dwellings

comprising 59 one-bedroom dwellings, 196 two-bedroom dwellings and 32 three-

bedroom dwellings. According to RMS’ Guide to Traffic Generating Developments,

medium density residential flat buildings are estimated to produce the following peak

hour trips:

Smaller units and flats (up to two bedrooms):

Weekday peak hour vehicle trips = 0.4-0.5 per dwelling.

Larger units and town houses (three or more bedrooms):

Weekday peak hour vehicle trips = 0.5-0.65 per dwelling.

Application of the higher rates to the development yield, it is estimated that up to 149

trips can be generated during peak periods within the local road. Such a level of traffic

activity is well below the capacity of the local road. As such, motorists are expected

to experience a good level of service and minimal delays within this local road

without any significant impacts to the residential/environmental amenity within the



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surrounding precinct (as 149 trips is well below the desirable environmental threshold

of 200 trips per hour specified within the Guide to Traffic Generating Developments).

2.2.2 Traffic Volumes and Conditions Table 1 overleaf summarizes the projected 2036 peak hour traffic volumes within

Junction Road immediately adjoining the subject site to the east, incorporating full

redevelopment of the Riverstone Precinct, as detailed within the North West Growth

Centre Indicative Layout Plan Revision Traffic and Transport Model Year 2036.

Source: Road Delay Solutions’ North West Growth Centre Indicative Layout Plan Revision Traffic and Transport Model Year 2036. Table 1 indicates that Junction Road is forecasted to accommodate two directional

traffic demands of between 1,500 – 2,000 vehicles per hour during peak periods, with

directional demands being tidal whereby northbound movements dominating during

the morning peak and southbound movements dominate during the evening peak. This

directional volume split is associated with commutter journeys to and from work.

2.2.3 Traffic Control The Riverstone & Alex Avenue Precincts Section 94 Contributions Plan provides for

signalised intersection control at the junctions of Schofields & Boundary Road and

Schofields Road & Junction Road. The signalisation planned for these intersections

would punctuate the traffic stream within Schofields Road, resulting in regular and

extended gaps in the traffic flow to allow turning movements to occur to and from

Junction Road in a safe and efficient manner.

2.4 Public Transport The site will be serviced by existing bus services operating along Schofields Road

which are within easy walking distance of the site. In addition, Schofields Railway

TABLE 1 PROJECTED 2036 PEAK HOUR TRAFFIC DEMANDS OF

JUNCTION ROAD Junction Road

(North of Schofields Road)

AM PEAK PM PEAK

Northbound 459 1478 Southbound 991 457

Total 1,450 1,935



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Station is located to the south-west of the site, which is able to be accessed via those

bus services that operate along Schofields Road. Further, additional commuter

parking facilities are scheduled to be provided adjoining the railway station to provide

reasonable accessibility for residents of the subject development and these public

transport facilities, with the pedestrian facilities within the proposed traffic signals

servicing their requirements in crossing Schofields Road, as well as footways within

Junction Road.



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3. PROPOSED DEVELOPMENT 3.1 Built Form The subject proposal involves the demolition of existing site structures and the

construction of a medium density residential development comprising seven

apartment buildings (A – H) with the following dwelling mix as illustrated in Table 2.

The abovementioned development is proposed to be serviced by two new east-west

local roads (Road 1 and 2), two new north-south local roads (Road 3 and 4) and

Junction Road, which effectively subdivides the site into three separate allotments.

Buildings A and B are proposed to occupy the lot situated within the northern portion

of the site, whilst buildings C, D and E and buildings F, G and H are to occupy the

two remaining lots, located within the south-eastern and south-western portions of the

site respectively.

Buildings A & B are to be provided with two levels of basement car parking

containing 161 car spaces. Buildings C, D and E are to be serviced by two levels of

basement car parking containing 361 spaces. Buildings F, G and H are proposed to be

provided with an at-grade and a basement level parking area containing a total of 361

spaces.

Vehicular access into the off-street parking area associated with buildings A and B is

to be facilitated by 6m wide combined ingress/egress access driveway connecting

with Junction road at the eastern property alignment.

TABLE 2 DEVELOPMENT DATA OF PROPOSED MEDIUM DENSITY

RESIDENTIAL DEVELOPMENT

Building Dwelling Composition

One Bedroom Two Bedrooms Three Bedrooms Total A & B 34 86 10 130

C, D & E 59 196 32 287 F, G & H 57 197 32 286

Total Units 703



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Vehicle access into the off-street parking areas servicing buildings C, D and E from

Road 4 is proposed to be facilitated by an 11m wide combined ingress/egress access

driveway, located at the south-western corner of the lot in which these apartments

(C,D and E) are proposed to occupy. Similarly, vehicular connectivity between the

basement level car parks servicing buildings F, G and H and Road 3 is proposed to be

accommodated by an 11m wide combined ingress/egress access driveway, located at

the south-western corner of the property.

In addition to the above, it is acknowledged that loading bays are proposed to be

provided within the abovementioned internal parking areas to ensure that all site

servicing activities (e.g. refuse collection, delivery of goods, etc.) are to occur off-

street. It is further understood based on information provided by the applicant that the

largest vehicle to service the site is Council’s 11m long refuse collection vehicles.



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4. ACCESS & INTERNAL CONSIDERATIONS 4.1 Vehicular Access Vehicular access from adjoining public roads to the subject dwellings is proposed to

be provided in the following arrangements:

Buildings A and B are proposed to be serviced by a 6m wide combined

ingress/egress driveway, providing connectivity between the basement parking

areas containing 161 spaces and Junction Road at the eastern property boundary;

Buildings C, D and E are proposed to be serviced by an 11m wide combined

access driveway comprising of a 6m wide entry lane and a 4m wide exit lane

separated by a 1m wide painted median. This access driveway is to service the

internal parking areas containing 361 spaces servicing residents and visitors of

buildings C, D and E from Road 4 at the south-western corner of the easternmost

lot, where the apartments are to be located; and

Buildings F, G and H are also proposed to be serviced by an 11m wide combined

access driveway comprising of a 6m wide entry lane and a 4m wide exit lane

separated by a 1m wide painted median. This access driveway is to provide

connectivity between the off-street parking areas 361 spaces servicing buildings F,

G and H and Road 3 at the south-western corner of the property.

In order to undertake an assessment of the driveway design servicing each component

of the abovementioned development, reference is made to AS2890.1-2004. This

Standard provides appropriate driveway width specifications based on the primary

land use proposed, the number of parking spaces accommodated and the functional

order of the access road. With regard to AS2890.1-2004 specifications, the following

provides a summary of the minimum requirements with respect to each access

arrangement raised above:

Buildings A & B - Based on the on-site parking provision of 161 car spaces, the

residential nature of the land use and the local (non-arterial) functional order of

the frontage road (Junction Road), AS2890.1-2004 specifies at minimum, a



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Category 2 type access driveway, comprising a combined ingress / egress width

of between 6m - 9m. The proposed 6.0m wide combined ingress / egress

driveway servicing buildings A and B readily accords with the minimum

AS2890.1-2004 requirement and is therefore considered to be satisfactory;

Buildings C, D & E and Buildings F, G & H - Based on the internal parking

provision of 361 car spaces, the residential nature of the land use and the local

(non-arterial) functional order of the new frontage roads (Roads 3 and 4),

AS2890.1-2004 specifies at minimum, a Category 3 type access driveway is

required, as a minimum, comprising an entry width of 6m, an egress width of

between 4-6m, with a separation of between 1-3m. The proposed access driveway

servicing the proposed development therefore suitably complies with the

abovementioned AS2890.1-2004 requirement and accordingly, is considered to

be satisfactory with respect to accommodating passenger vehicles.

Notwithstanding the above, it is further acknowledged that the proposed access

driveways are also expected to accommodate heavy vehicles up to the size of 11m

long refuse collection trucks, with a 25m turning radius.

In order to demonstrate that the abovementioned proposed access arrangements are

suitable in accommodating such vehicles, a swept path assessment has been

performed on the architectural design, utilising turning path templates of 12.5m long

Heavy Rigid Vehicles (HRV) provided within AS2890.2-2002 (a copy of which is

provided in Appendix 1). It is noted that the Australian Standards and Austroads does

not provide turning path templates specific for Council’s 11m long garbage collection

trucks. As such, an HRV turning template was used to simulate the turning

movements of Council’s garbage collection trucks, as it provides a turning radius

similar to such vehicles.

These swept paths indicate that vehicles up to the size of 12.5m long HRVs are

capable of accessing and vacating the subject site in a safe and efficient manner,

without any unreasonable encroachment on the adjoining public and private

infrastructure. As such, the access driveway design is readily capable of

accommodating the largest vehicle (11m long refuse collection vehicle) proposed to



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frequent the site. In this regard, the proposed access driveway arrangements are

therefore considered to be satisfactory.

4.2 Parking Provision 4.2 Parking Provision The subject development is proposed to provide a consolidated parking provision

comprising 741 resident spaces, 142 residential visitor spaces and 236 bicycle parking

racks to service a combined development yield of 150 x 1 bedroom dwellings, 479 x 2

bedroom dwellings and 74 x 3 bedroom dwellings.

Blacktown City Council has adopted the following locally sensitive parking

requirements for residential flat building developments, as outlined in Section 4.3.4

and 4.3.5 of Blacktown City Council’s Growth Centre Precincts Development Control

Plan (Schedule One – Six) 2014:

Residential Flat Buildings in R3, R4 Zones

1 space per dwelling, plus

0.5 spaces per 3 or more bedroom dwelling.

1 visitor car parking space per 5 dwellings

Bicycle parking spaces: 1 space per 3 dwellings

Table 3 identifies the off-street parking requirements based on Council’s rate.

TABLE 3

OFF-STREET PARKING REQUIREMENTS BLACKTOWN GROWTH CENTRES (SCHEDULE ONE TO SIX) DCP 2014

Item Rate Spaces Required No. Provided 1 or 2 bedroom

dwellings 1 space per dwelling

629 741

3 bedroom dwellings

1.5 space per dwelling

111

Visitor Parking 1 space per 5

dwellings 140.6 142

Bicycle parking 1 space per 3

dwellings 234.3 236

Total

880.6 car spaces and 234.3 bicycle spaces

883 car spaces and 236 bicycle spaces



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Table 3 indicates that the proposed development satisfies the numerical off-street

parking requirements established within Blacktown City Council’s Growth Centre

Precincts Development Control Plan (Schedule One – Six) 2014.

4.3 Internal Circulation and Manoeuvrability The proposed internal off-street parking areas form a series of 90 degree angled

parking rows serviced by adjoining circulating parking aisles and internal ramps.

These parking areas have been designed to accord with the relevant requirements of

AS2890.1-2004, AS2890.3-2015 and AS2890.6-2009 to achieve safe internal

circulation, providing the following minimum dimensions:

Standard 90 degree parking space width = 2.4m;

Disabled 90 degree parking space width = 2.4m (with adjoining 2.4m wide

shared area);

Additional space width where parking spaces adjoins an obstruction = 0.3m;

Bicycle parking rack spacing = 1.0m;

Standard 90 degree parking space length = 5.4m;

Horizontal bicycle parking rack length (depth) = 1.8m;

Parking aisle width adjoining 90 degree parking spaces = 5.8m;

Two-way straight roadway / ramp width = 5.8m;

One-way straight roadway / ramp width = 4.0m;

Headroom = 2.2m;

Headroom above disabled parking spaces and adjoining shared areas = 2.5m;



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Maximum ramp grade = 1 in 5;

Maximum ramp grade for the first 6m inside the site and within parking

module = 1 in 20; and

Maximum change in grade = 1 in 8.

The above compliance with the relevant AS2890.1-2004 and AS2890.6-2009

specifications is anticipated to result in safe and efficient internal manoeuvring and

parking space accessibility. The proposed internal circulation arrangements are

therefore considered to be satisfactory.

4.4 Site Servicing

It is understood that the applicant has previously held discussions with Council

officers regarding arrangements concerning waste storage and collection activities

associated with the development. Based on these discussions, it has been

recommended, and is now proposed, that waste generated by the subject development

be stored within standard residential garbage and recycling bins contained within

designated storage rooms on-site close to the proposed access driveways and the

adjoining internal manoeuvring areas. It is acknowledged that the largest vehicle

proposed to service the site is an 11m long refuse collection vehicle with a 25m

turning radius.

In order to demonstrate that the abovementioned Council specified garbage truck can

enter the site via the access driveways, manoeuvre into the allocated servicing areas

and thence exit the site via the access driveways, swept path plans based on a 12.5m

long Heavy Rigid Vehicle (HRV) have been generated to check the manoeuvrability

of the site design to service such vehicles. These plans have been prepared utilising

Autoturn software and the provided vehicle specifications are based on templates in

accordance with AS2890.2-2002 (a copy of which is provided in Appendix 1). These

swept path plans illustrate that vehicles up to the size of 12.5m long HRVs are

suitably capable of undertaking the required manoeuvring to, within and from the site,

without unreasonable encroachment, conflict or impedance on internal passenger



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vehicle parking or circulation areas. Since Council’s garbage collection trucks, being

the largest vehicles expected to access the site, are smaller than a HRV, the

manoeuvrability of such vehicles on site would be better than what the HRV turning

paths overlaid on the plans would suggest. In this regard, the proposed servicing

arrangements are therefore considered to be satisfactory.

In addition to the above, it is acknowledged that the transitional grades of the access

ramps servicing heavy vehicles from the frontage roads slightly deviate from the

guidelines provided within AS2890.2-2002. However, a ground clearance assessment

has been performed by overlying a 12.5m long Heavy Rigid Vehicle (HRV) on the

architectural plans. Our assessment of this analysis has indicated that such vehicles

(which also encompass 11m long refuse collection vehicles) will be suitably capable

of negotiating the proposed site access roads in a safe and efficient manner.

Notwithstanding the above, it is acknowledged that the path of travel and the loading

dock used by the Council garbage collection vehicle will need a clear headroom of

4.5m. The architectural plans show the subject design to allow for 5.3m floor to floor

clearance for the portion of the basement carpark accessible to the Council garbage

truck. In this regard, the required headroom will be readily achieved in the proposed

development and the subject design is considered to be satisfactory.



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5. CONCLUSION This Practice has undertaken an assessment of the site access and internal traffic

considerations of a medium density residential development on land located at 42 –

66 Junction Road, Schofields. Based on this assessment, the following conclusions are

now made:

The external traffic considerations of the subject development and the entire

Riverstone precinct was previously undertaken in association with the

planning for the entire Riverstone Precinct resulting in the preparation of the

Schedule 2 (Riverstone Precinct) of the Blacktown City Council Growth

Centre Development Control Plan 2014 and Riverstone & Alex Avenue

Precincts Section 94 Contributions Plan;

The proposed access arrangements comply with the Australian Standard

requirements with respect to the land-use proposed, the capacity of the parking

and servicing areas serviced and the functional order of the frontage roads;

The proposed off-street vehicular parking provision accords with Council’s

relevant DCP requirements;

The proposed internal circulation and servicing arrangements suitably

conforms to the intentions of the relevant requirements of AS2890.1-2004,

AS2890.2-2002, AS2890.3-2015 and AS2890.6-2009; and

The proposed internal circulation and manoeuvring arrangements are capable

of providing for safe and efficient vehicular movements during peak times.

Based on the contents of this report and the conclusions contained herein, we consider

that there are no internal traffic related issues that should prevent approval of the

subject application.

APPENDIX 1

traffic assessment proposed residential development 42 … · 42 – 66 junction road, schofields....

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