Traffic signal lights
Traffic signals for vehicles
The signal lenses use polycarbonate resin and glass. Although lens diameters range from 200mm to 400mm, normally 250mm and 300mm types are used.
Each signal optical unit consists of a lens and a reflector and is semi-shielded for air and water tightness and dirt prevention, allowing for high durability.
Some traffic signal lights employ light emitting diodes in their optical units which both save energy and lengthen the life of the units, and they are designed to prevent reflections from the afternoon sun making them difficult to see.
Pedestrian signal light(with display of waiting time)
These signals use polycarbonate resin and glass. Lenses are generally 250mm in diameter. As with the vehicle signal lights, each signal optical unit consists of a lens and a reflector and is semishilded for air and water tightness and dirt prevention, allowing for high durability.
The display of waiting time shows how long the pedestrians have to wait for the light to turn green in figures or symbols to ease their impatiences.