IMPROVING SAFETY AT INTERSECTIONS CONTROLLED BY TRAFFIC SIGNAL LIGHTS. FINAL TECHNICAL REPORT
The purpose of this research was to determine whether conspicuity of an illuminated traffic signal lens could be increased with a modulating incandescent light source. Experiments were conducted both in the laboratory and in a controlled field setting under normal and degraded viewing conditions using both static and dynamic testing situations. The results of the research showed that under degraded viewing conditions of sun backlighting, the modulating bulb was more effective in increasing the conspicuity of the illuminated lens than the standard bulb now in use. Concern was raised as to whether the modulating light source may initiate photosensitive induced epileptic seizures. Previous research was examined and neurological expert evaluations were sought to explore this possibility. Briefly, the literature and experts' opinions indicated that the unique lighting pattern would not trigger a photosensitive induced epileptic seizure.
Marshak Hall, Suite 910, 160 Convent Avenue
New York, NY United States 10031
- Guzy, L T
- Publication Date: 1991-9
- Features: Appendices; References;
- Pagination: 41 p.
- TRT Terms: Dynamics; Epilepsy; Expert evidence; Field tests; Guides to the literature; Laboratory tests; Literature reviews; Statics; Sunlight; Traffic signals; Visibility
- Uncontrolled Terms: Expert opinion
- Old TRIS Terms: Dynamic conditions; Modulating incandescent light source; Photosensitivity; Static conditions
- Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;
- Accession Number: 00668932
- Record Type: Publication
- Files: TRIS
- Created Date: Nov 7 1994 12:00AM