The benefits of our Zebraluminaires

DW Windsor Zebra luminaires are available ina variety of styles so they can be matched tothe luminaires used elsewhere on the scheme,furthermore we can supply every elementrequired for pedestrian crossing lighting; fromcolumn to Belisa beacon; minimise installationcost and street clutter by positioning the Zebraluminaire on the same column as the Belishaglobe.

These guidance parameters (explored in moredepth in the ILE publication TR12) mean thatthe ideal pedestrian crossing luminaire willdistribute most of its light in a concentratedpattern forward of the luminaire in a highenough beam spread to ensure that thecomplete height of the pedestrian isilluminated.

DW Windsor Zebra Floods offer this idealdistribution and are therefore eminentlysuitable for this application.

Reference material

Please refer to the following publications for the full requirements of lighting pedestrian crossings

BS EN 13201-2: 2003 Road Lighting Part 2:Performance requirements, Annex B

BS 5489-1: 2003 Code of practice for thedesign of road lighting – Part 1: Lighting ofroads and public amenity areasParagraphs 11.5, E.2.4, E.3.3

CEN/TR13201-1:2004 Paragraph 5.3.9

ILE (Institution of Lighting Engineers) Technical Report Number 12 “Lighting ofPedestrian Crossings”

Lighting pedestriancrossingsThere are three principle issues to consider

when illuminating a Zebra crossing.

• Making the crossing itself highly visible anddistinguishable from the surrounding road.

• Visibility of pedestrians at the crossing andthrough visibility (to ensure motorists arealso aware of pedestrian activity beyond orin front of the crossing).

• Minimising glare to drivers.

In order to achieve these objectives an appropriateform of supplementary lighting is required.

To ensure that the approaching motorist clearlysees the place where pedestrians are to cross,the lighting must generate a defined luminouspatch of light across the crossing carpet, withclearly delineated edges. Consider also thearea beyond the crossing from the driver’sperspective.The approaches to the crossingmarked by zig zag lines – the controlled area –and the adjacent footways should also beadequately lit; this may be to the appropriateCE or S class. Where the road is lit to an MEclass then the pavements by the controlledarea should be lit to the appropriate S class.

A low mounting height of no more than 4 metresand often around 2.5 metres is usually mostsuitable to create this delineated carpet. Whilea different lamp colour from the surroundingroad lighting is effective in helping highlightthe carpet – for example white light (metalhalide) on the crossing in a yellow light (high-pressure sodium) road installation.

Luminaires need to be as glare free as possibleto ensure maximum through visibility throughthe crossing area – remember pedestrians willoften try to cross short of the crossing itself.Flat glass luminaires are therefore best.

Finally the light distribution from the luminaireitself needs to ensure high levels of verticalilluminance onto the crossing pedestrian toensure that they are visible to approachingmotorists. Because humans are three dimensionalrather than two dimensional, this verticalillumination does not need to fall exclusivelyonto the side of the pedestrian facing the traffic.In falling onto the curved surface facing theluminaire the pedestrian will still be renderedvisible to the motorist).

Ely ZebraLong Crendon, Buckinghamshire

37dwwindsor.co.ukanswers@dwwindsor.co.uk

Road class (see also BS5489-1:2003 table B1)

CE1

CE2

S1

S2

S3

S4

Carpet average (with 60%uniformity) [ Eave ] in lux

105

70

52.5

35

26.25

17.5

Centre and kerb edge grid minimum verticalilluminance [ Evmin ] in lux

60

40

30

20

15

10

Rear of waiting area grid minimum verticalilluminance [ Evmin ] in lux

45

30

22.5

15

11.25

7.5

Target lighting values from TR12

NB. This table is not a substitute to a full copy of TR12 which can be purchased from the ILE.

Windsor ZebraWest Wycombe, Buckinghamshire

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Lighting pedestriancrossingsHow to

For a standard two lane carriageway, twoZebra luminaires are required for eachcrossing, positioned on opposite sides of theroad between the oncoming traffic and thecrossing.

We can supply every element required forpedestrian crossing lighting:

Ely ZebraLong Crendon, Buckinghamshire

39dwwindsor.co.ukanswers@dwwindsor.co.uk

Complete Zebra service

As part of our standard service we can supplynot just the Zebra luminaires, but all of theindividual elements that make up thecomplete Zebra product package.

This covers everything from the specially-designed luminaire, Belisha beacons withflasher unit and supporting brackets, to fully-painted columns complete with black andwhite bands.

In addition, our applications department canundertake the lighting scheme design for you,so you can be sure your pedestrian crossing islit to meet required standards.

Precise light control

We have introduced a new 'flood' opticalsystem to provide the light control needed forthe localised lighting of pedestrian crossings.The Zebra Flood optic is available in a numberof luminaire styles, so continuity can beachieved with the rest of your lighting scheme.

Luminaire

Column

Belisha beacons with flasher unit and supporting brackets

Painting of black & white bands

Lighting design

1

2

3

4

5

Zebra product ranges

Colada Zebrap 254-255

Monaro Zebrap 80-83

Ely Zebrap 120-121

Windsor Zebrap 146-147

Optima Range Zebrap 86-101

Strand Zebrap 114-119

Iffley Zebrap 126-127

York Range Zebrap 128-143

New universal Zebra Flood Optic is suitable for both one and two-way traffic

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