Historically, pedestrian signal heads have been internally illuminated using incandescent lamps. However, with the current widespread use of light emitting diodes (LEDs) in pedestrian signal heads, concerns regarding the visibility of LED devices have emerged. Research was needed to develop measurable visibility performance requirements for pedestrian signal heads, as well as test methods to verify compliance with these requirements.
Visibility Performance Requirements and Testing Procedures for Pedestrian Signal Heads
2003
68 pages
Report
No indication
English
Transportation Safety , Transportation & Traffic Planning , Light emitting diodes , Signal visibility , Test methods , Performance , Visibility , Luminance , Glare tolerance , Pedestrian control signals , Traffic signals , Night visibility , Photometry , Standards , Traffic control devices , Pedestrian safety , Pedestrian signal heads
Visibility Performance Requirements for Pedestrian Signals
British Library Conference Proceedings | 2005
|Vehicle lighting to enhance pedestrian visibility
Automotive engineering | 2006
|Research Regarding Night-Time Pedestrian Visibility
Springer Verlag | 2015
|Vehicle Lighting to Enhance Pedestrian Visibility
SAE Technical Papers | 2006
|