Large-Sized Digital Billboards Hazard

Abstract

Various kinds of media are used for outdoor advertising purposes. One such medium comprises large electronic billboards with light-emitting diodes (LED) as the source of light. Such novel advertising devices' photometric parameters are different than in the media used so far and consequently impact road traffi c participants in a different manner. Digital billboards with electroluminescent diodes are large, have high luminance, and display dynamically changing images. Billboards located near streets are a potential threat to traffi c safety. The paper presents requirements for such billboards, the results and analysis of measurements of selected billboards located in Poznań, Poland, as well as conclusions and recommendations for large-sized billboards with LED located in the vicinity of roads and intersections.

Pilot study of visibility level with the use of a driving simulator

“…Excessive luminance of surfaces in the road's vicinity, especially at night, may lead to reduced visual performance of drivers, and consequently impact the visibility of obstacles on the road and its vicinity. Special hazard comes from LED billboards that, apart from very high luminance levels, also feature large surfaces, high luminance contrast and colour contrast, and whose content (animated or video) is very dynamic (Domke & others [3], Zalesinska & others [4]). The knowledge of the impact of observation conditions on the visibility of obstacles on the road will allow for the optimization of lighting parameters related to obstacle visibility levels and the effective use of energy for lighting purposes.…”