DELAYS TO MIXED LEFT- AND RIGHT-TURNING VEHICLES AT PRIORITY INTERSECTIONS

The average delay experienced by vehicles on the minor road at a priority intersection is considered in this paper when minor road flow consists of a single stream of mixed left- and right-turning vehicles. Following the analytical, statistical approach of hawkes, a series of design curves have been computed giving average delay values for a range of traffic flow parameters. These results are compared with average delay values calculated using a traffic flow simulation model. The agreement between the theoretical delays calculated by the two methods is good. Practical measurements of average delays to minor road vehicles at an intersection which conformed to the required restraints have been carried out. The results are compared with those calculated from the analytical method using the measured values of the traffic parameters at the sites. Adequate agreement between the observed and calculated delays is observed and the usefulness of the analytical calculation for determining average delays in this situation is confirmed. /Author/TRRL/

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  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • HOTHERSALL, D C
    • SALTER, R J
  • Publication Date: 1977-2

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Filing Info

  • Accession Number: 00153910
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Oct 13 1977 12:00AM