A before-and-after comparison of data collected by driving on a fixed circuit in downtown Detroit showed a 6 per cent decrease in fuel consumption and a 12 per cent decrease in travel time after the introduction of the generally permissive right-turn-on-red policy. The observed fuel consumption was in satisfactory agreement with results calculated from the observed trip time using a previously developed linear model, although there were some discrepancies. Savings of both fuel and time were greater in off-peak traffic than in the afternoon rush hour. Of the total time saved, most (63 per cent) was saved in blocks involving a right turn on red, but 37 per cent occurred on other blocks. Similarly, most of the time savings consisted of reduced stopped delay, but there was also a 35 per cent reduction in running time. /Author/TRRL/

  • Availability:
  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • Chang, M F
    • Evans, Leonard
    • Herman, R
    • Wasielewski
  • Publication Date: 1977-10


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00170349
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Apr 12 1978 12:00AM