Right-turn-on-a-circular-red traffic signal (RTOR) is a practice which has gained wider acceptance. However, there is still disagreement on whether, where, and how RTOR should be implemented. To determine past experiences with RTOR, a literature review and a survey of state and city practices was conducted. The state-of-the-art summary contains information on accidents, delay, capacity, level of service, gap acceptance, and signing. The data collected to date indicate that RTOR does not significantly increase accidents but does reduce right-turn delay.

  • Supplemental Notes:
    • See also PB-230 996.
  • Corporate Authors:

    Voorhees (Alan M) and Associates, Incorporated

    Cambridge, MA  United States 

    Federal Highway Administration

    Office of Research, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • McGee, H W
  • Publication Date: 1974-10

Media Info

  • Pagination: 102 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00090474
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-RD-75- 5 Intrm Rpt.
  • Contract Numbers: DOT-FH-11-8251
  • Files: NTIS, TRIS, USDOT
  • Created Date: May 29 1976 12:00AM