RELATIONSHIP BETWEEN ILLUMINATION AND FREEWAY ACCIDENTS. PROJECT 85-67

THE OBJECTIVE WAS TO DETERMINE THE OPTIMUM DESIGN ILLUMINATION LEVEL AND UNIFORMITY NEEDED ON URBAN FREEWAYS, AS RELATED TO ACCIDENT RATES. DATA WERE COLLECTED FROM A WIDE VARIETY OF FREEWAYS, AND COMPARED BY USING THE RATIO OF NIGHT/DAY ACCIDENT RATES PER MILLION VEHICLE MILES. THE TABULATIONS INCLUDED OTHER FACTORS, SUCH AS ROADWAY ELEMENTS, WEATHER, DRIVER AGE, AND TYPES OF ACCIDENTS, WHICH WOULD ALLOW SUBSEQUENT ANALYSIS AS SEPARATE RESEARCH. CONCLUSIONS ARE PRESENTED CONCERNNG DAYLIGHT THRESHOLD, NIGHT TRAFFIC, LIGHTING WARRANTS, ILLUMINATION VALUES, LIGHTING DEPRECIATION, ROADWAY ELEMENTS, DRIVER AGE, DATA ACQUISITION, AND RECOMMENDED FUTURE RESEARCH. /HSL/

• Supplemental Notes:
  • Vol 66, No 5, PP 365-393, 12 REF
• Corporate Authors:

  Illuminating Engineering Research Institute

  345 East 47th Street
  New York, NY  United States  10017
• Authors:
  • Box, P C
  • Alroth, W A
• Publication Date: 1971-5

Subject/Index Terms

• TRT Terms: Crash rates; Freeways; Highway design; Street lighting; Traffic crashes
• Old TRIS Terms: Freeway design; Freeway lighting
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00221518
• Record Type: Publication
• Source Agency: Highway Safety Literature
• Files: TRIS
• Created Date: Dec 31 1994 12:00AM