Download - 1236946741Lighting Pedestrian Crossings
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
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
how
-to
guid
es
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
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
how
-to
guid
es
