The technical bits
Luminaires should be installed 1m from the pedestrian crossing and use a low mounting height of 5-6m. As a general rule – the lower the better.
Luminaires need to be as glare free as possible to ensure maximum visibility through the crossing area, as pedestrians will often try to cross short of the crossing itself. Flat glass luminaires are therefore best.
A contrasting lamp colour from the surrounding road lighting is recommended as an effective way to highlight the carpet, for example white light on the crossing in a high pressure Sodium (SON) road installation. The same effect can be achieved in LED schemes with a simple change in colour temperature.
Finally, the light distribution from the luminaire needs to provide high levels of vertical illuminance onto the crossing pedestrians, to ensure that they are visible to approaching motorists. TR12 recommends three separate vertical calculation planes, covering the width of the crossing to ensure good visibility of the pedestrian.