ALTERNATIVE INCANDESCENT TRAFFIC SIGNAL LAMPS AND SYSTEMS FOR IMPROVED OPTICAL AND ENERGY EFFICIENCY. FINAL REPORT

A study was undertaken to determine methods of improving the optical efficiency of traffic signals to reduce power usage, while maintaining high safety standards. In-depth investigations were performed on the use of quartz-halogen lamps, low-voltage lamps, redesigned lenses, and nighttime signal dimming. All methods decreased power usage, although in some cases the increased initial cost did not justify their application. Very large efficiency gains were obtainable using redesigned lenses, the principles of which are described in the report.

• Corporate Authors:

  Lighting Sciences, Incorporated

  7830 East Evans Road
  Scottsdale, AZ  United States  85260

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Lewin
  • Heinisch
  • Walker
  • Laird
  • Freedman
  • Davit
  • Leiser
  • Winchell
• Publication Date: 1985-9

Media Info

• Pagination: 323 p.

Subject/Index Terms

• TRT Terms: Design; Economic efficiency; Energy consumption; Halogens; Improvements; Lenses (Geology); Lighting; Optics; Traffic signals
• Uncontrolled Terms: Efficiency
• Old TRIS Terms: Lenses, excluding soils; Quartz halogen lights
• Subject Areas: Design; Economics; Energy; Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00460356
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA/RD-85/089, FCP 32L2-152
• Contract Numbers: DOT-FH-61-83-C-00098
• Files: TRIS, USDOT
• Created Date: Dec 31 1989 12:00AM