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MK Highways – CMK Street Lighting Presentation

CMK Street Lighting Presentation

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MK Highways – CMK Street Lighting Presentation

Street Lighting in CMK

Street lighting can be broken down into 4 zones in CMK

Boulevards and Gates

Pedestrian Walking Zones/Car Parks

Underpasses

Porte Cocheres

These zones were each designed in accordance with national

standards, utilising technology available at the time. A large number of

these assets are now past their design life & are not sustainable in their

current configuration.

In total there are in excess of 3,600 individual lighting units across

these 4 zones.

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MK Highways – CMK Street Lighting Presentation

Issues with Lighting Assets in CMK

There are a number of issues associated with these ageing assets.

•Lanterns are obsolete – difficult to continue replacing or fit with new

technology

•Lamps are energy inefficient – high energy costs vs reduced budgets

+ high carbon costs

•Increasing maintenance costs on old assets vs reduced budgets

•Reduced lighting effectiveness leaves areas poorly lit / ‘fear of crime’

•Type of lamps give poor lighting colour masking true colours – CCTV

problems

•Existing lanterns cause high degree light pollution

•Need to maintain existing character in CMK

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MK Highways – CMK Street Lighting Presentation

In light of the above issues MK Highways has in conjunction with

Holophane Lighting designers (all existing CMK lighting is Holophane

units including iconic globe lanterns) looked at options.

Zone 1 – Boulevards and Gates – Existing columns are stock item,

existing lanterns/lamps are units containing sodium lamps.

Option retain columns – Convert Lanterns/Lamps to low energy

LED – minor visual change

Zone 2 – Pedestrian Walking Zones / Car Parks - Existing columns are

stock item, unique existing lanterns are units containing sodium lamps,

cannot be retro-fitted with LED

Option retain columns – Develop new Lantern to match existing

convert to low energy LED – retain character/visuals in sympathy

with CMK Handbook

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MK Highways – CMK Street Lighting Presentation

Zone 3 – Underpasses – All existing underpass units have been

converted in 2012 to low energy LED units

No Option required – These units are fit for purpose giving

maximum benefit in terms of energy savings/carbon savings and

reduced maintenance costs. Whilst retaining original visual

characteristics.

Zone 4 – Porte Cocheres - Existing lighting in Porte Cocheres was

switched off approximately 20 years ago

Currently no Option being considered – Need to consider future

options in conjunction with interested parties who may wish to re-

activate/manage this asset !

Existing Zone 2 Lighting – Area lighting - poorly lit

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Photo of Night Lighting – Existing Lanterns – Silbury/Witan

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New Lantern Zone 2 - Directional Lighting all areas Well Lit

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Photo of Night Lighting – New Lanterns – Avebury/Grafton

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New Lantern vs Existing on existing Column

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Close up Profile of New vs Existing

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Benefits – Zone 2 Lantern Replacement

Benefits of new Lantern

•Retrofitted to existing columns

•Retains profile of existing iconic globe lantern

•Unique design can be ‘Trade Marked’ as MK

•Design can be transferred to other estates with ‘globe lantern’

•Future proofed design can be upgraded

•Modular & Programmable for every location

•Directional lighting to ensure all areas ‘well lit’

•White light renders ‘true colours’ to aid CCTV

•Reduced number of columns for same lighting in some areas

•Reduced energy costs

•Reduced carbon output

•Reduced maintenance cost (25,000 hours burn time)

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Cost Savings for converting to LED

Projected Energy Savings

2500 units replaced with low energy LED = 30 watt saving per lantern 4050 hours annual lighting x 30 watt = 121500 watts or 121.5 kilowatts 121.5 Kilowatts x 11.4 pence per Kw = £13.851 per lamp per year £13.851 x 2500 lamps = £34,627.50 per annum in 2016/17

Projected Maintenance Savings

(based on a reduction in total number of defects repaired)

Current Budget £800,000 = 12,000 defects= £66.66 per defect

12,000 defects x 4.16% (% of total stock) = 499 defects less

499 x £66.66 = £33,263.34

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PROJECTED ENERGY SAVING = £ 34,627.50

PROJECTED MAINT. SAVING = £ 29,937.00

TOTAL PROJECTED REVENUE SAVING = £ 64,564.50

Trials

• A trial has been undertaken in the Avebury/Grafton pedestrian

walkways approaching the underpasses. This uses a generic LED

lantern giving the new lighting levels to prove benefits (photo on

slide 9).

• We are undertaking a further trial to determine how these units are

installed & programmed in the parking/main walking areas using the

new design LED lanterns to understand how to maximise benefits

prior to commencing a programme of replacement.

• We would welcome suggestions on which area to carry out this trial

and in order to encourage feedback by engaging with a key

stakeholder such as ‘Santander’.

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Next Steps

• Carry out a trial in CMK parking / walking area to determine how to

maximise siting/programming of new lanterns. (December 16 to

February 17)

• Feedback to lighting design team to inform programming of lanterns

(Feb 17 to April 17)

• Identify phased installation capital programme over the next 3 years

starting in July 2017

• This work would form part of the overall £50 million transport

infrastructure investment, therefore capital already allocated for this

project

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MK Highways – CMK Street Lighting Presentation

Thank you