Perception of “Vacant” LED sign at rear glass windshield glass of public car (taxi) to enhance road traffic safety

Abstract

The objective of research is to design with the light signal on the Taxi according to Cognitive Ergonomics. This study and experiment sign design and analyze on the LED light signal set up behind the cabs. Which aimed to suit the safety and increased visibility of other follow drivers with current traffic on the road. The researcher set up Vacant light signal on 10 cabs to apply in this experiment with general traffic. The experimental result and analysis from survey by questionaire, the questionaire result show that light “Vacant“ signal can improve the perception of other follow car drivers and help to reduce accidents. This experiment aimed to benefit as information to Department of Land Transport of Thailand and others which is related authorities to improve the road traffic safety.