A traffic signal is the most restrictive form of traffic control. In order for a signal to be warranted, the benefits gained from the installation must outweigh the adverse effects that will occur. This article discusses signal warrants, considerations to be noted when deciding on control strategies, and types of equipment which are available and required to cope with these considerations. To define the problems of a given intersection pedestrians, recall features, left turn treatment, phase skipability, pulse versus presence detection, pre-emption and all-red possibilities must be considered. The present trend toward "complete protection of everybody" is not in the public interest, for unnecessary controls may cause ill effects. The primer mentions the use of conventional versus computerized equipment and warns traffic engineers to state clearly the functions they expect suppliers to provide.

  • Availability:
  • Corporate Authors:

    Public Works Journal Corporation

    P.O. Box 688
    Ridgewood, NJ  United States  07451
  • Authors:
    • Orcutt, F L
  • Publication Date: 1975-3

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00084388
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 2 1975 12:00AM