Study of Appropriate Luminance for Road Construction Sites Case Study: National Highway number 11, Doi Ti-Chiang Mai Junction

Abstract

This study was to measure the luminance of road construction area that affect accidents. The location of the study was a National Highway number 11 construction project, Doi Ti-Chiang Mai Junction Line in the area of ​​responsibility of the Department of Highways. The objective is to find the appropriate luminance and Increase visibility for drivers of vehicles traveling through road construction areas. The result of the study showed the brightness was relationship inverse to the number of accidents. The lower lighted road causes high number of accidents than the higher lighted road. Accidents will be decrease at 6-lux up luminance which is the minimum lighted road value that will be used for considering the lighted road installation. It is also used in the development of standards for installing lighting devices in the area of ​​the road to help reduce accidents in road construction areas.