COMPATIBILITY OF LED TRAFFIC SIGNALS WITH EXISTING TRAFFIC SIGNAL FIELD EQUIPMENT

Light Emitting Diode or LED vehicle traffic signal heads have become popular in the last four years in the U.S. mainly for their ability to save energy. Currently, their use is more restricted to the red traffic lamp, because the green and yellow are not yet financially feasible. Two important problems that have been encountered are incompatibility of the LED modules with existing load switches and signal (conflict) monitors. Many of these devices are seven to ten years old, and are not usually replaced unless there are problems encountered in the field. This article examines LED traffic signals, analyzes the problems, and recommends some solutions. It also aims to raise the awareness of this issue among transportation engineers considering LED traffic signals, or those who have already installed them.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/7529443
• Corporate Authors:

  International Municipal Signal Association

  165 East Union Street
  P.O. Box 539
  Newark, NY  United States  14513
• Authors:
  • Behura, N S
  • Evans, S R
• Publication Date: 1998-3

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 34-39
• Serial:
  • IMSA Journal
  • Volume: 36
  • Issue Number: 2
  • Publisher: International Municipal Signal Association
  • ISSN: 10642560
  • Serial URL: http://www.imsasafety.org

Subject/Index Terms

• TRT Terms: Diodes; Signal devices; Signal face; Signal lights; Traffic signal control systems; Traffic signals
• Uncontrolled Terms: Compatibility
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00748986
• Record Type: Publication
• Files: TRIS
• Created Date: May 5 1998 12:00AM