SPECIFICATION OF CONTROL ILLUMINATION LIMITS
this project was instituted to determine minimum and maximum limits of vehicle control lable illumination and to recommend procedures for compliance testing. In order to establish a minimum brightness level, a psychophysical procedure was used to establish the 95 percent correctness threshold for 95 percent of older drivers (ages ranged from 45 to 67). The correctness threshold and subject response times were obtained over eight letter brightness levels, four letter sizes and three contrast ratios. The results showed that minimum brightness levels must be specified as a function of letter size and contrast ratio. /NTIS/
-
Corporate Authors:
Wayne State University
Department of Industrial Engineering
Detroit, MI United States 48202National Highway Traffic Safety Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Langolf, G D
- Mourant, R R
- FISHER, J
- Publication Date: 1974-10
Media Info
- Pagination: 84 p.
Subject/Index Terms
- TRT Terms: Age; Automobiles; Automotive engineering; Brightness; Drivers; Human factors; Instrument panels; Interior lighting; Lettering; Night visibility; Perception; Vehicle lighting; Vision
- Uncontrolled Terms: Driver age
- Old TRIS Terms: Driver perception; Driver vision; Letters
- Subject Areas: Highways; Safety and Human Factors;
Filing Info
- Accession Number: 00082928
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: Final Rpt.
- Contract Numbers: DOT-HS-4-00864
- Files: NTIS, TRIS, USDOT
- Created Date: Mar 26 1975 12:00AM