Study on the Influence of LED Display Brightness on Urban Traffic Safety——A Case Study of Chongqing
HE Ying
NING Jing
Abstract：In recent years,with the rapid development of LED display technology,LED screens have been widely used in commercial advertising,information dissemination and traffic management.Their high brightness has not only transformed the nighttime lighting environment of cities,but also brought a non-negligible impacts on urban traffic safety.To understand the impact of LED display brightness on drivers,the study conducted surveys and measurements on the placement,size and brightness of typical LED displays in the central urban areas of Chongqing.The results show that at night,the brightness of LED displays commonly exceeds the standard requirements of 400 cd/m2.Additionally,the high contrast between the display and the surrounding environment creates intense glare,which can easily distract drivers and poses a significant threat to nighttime driving safety.Therefore,it is recommended that the nighttime brightness of LED displays be reasonably controlled by referring to relevant standards and considering the ambient background luminance.This approach aims to ensure the visual effectiveness of the displays while also meeting driver's visual performance and comfort requirements.
Keywords：LED displayluminanceurban roadsdata surveys
Publication Date：2025-08-30
Online Publishing Date：2025-09-17(First online date of this platform, not the publication date of the document)
Pages：7( 16-22 )