Luminous Intensity Characteristics and Sun-Phantom Ratio in a Pedestrian Signal Head with a Film Type Lens-Unit

Abstract

The National Police Agency has yet to propose detailed specifications for preventing signal head phantoms; they are currently being examined by the agency. The pedestrian signal head developed by our project satisfies the standard for the luminous intensity distribution specified by the agency. With this film type of pedestrian signal head, the ratio of signal light to sun phantom was found to be three times as that of much as current pedestrian signal heads.