WHITE OR YELLOW LIGHTS FOR VEHICLE HEAD-LAMPS?
The question of whether to use filter (yellow) incandescent light or unfiltered (white) light is examined. The following topics are examined on this study: The optical image in the human eye; light scatter in the atmosphere as present in haze and mist, and the subsequent conditions of visibility, the make-up and function of the human visual system (contrast sensitivity and visual acuity are dealt with in detail); individual function of traffic lights, and the glare of traffic lights in particular; and finally, visual performance with respect to old age. The psychology of perception was formed not to give any useful indication as to preference for a particular color. However, minimal side effects (discomfort glare) were experienced which might indicate a preference for yellow light.
Leidschendam, Netherlands 2262 AR
- Publication Date: 1976
- Features: Figures;
- Pagination: 54 p.
- TRT Terms: Age; Eye; Glare; Headlamps; Perception; Safety; Sensitivity; Visibility; Yellow
- Old TRIS Terms: Yellow light
- Subject Areas: Highways; Safety and Human Factors;
- Accession Number: 00149161
- Record Type: Publication
- Files: TRIS
- Created Date: May 31 1977 12:00AM