EFFECT OF RIGHT-TURNING VEHICLES ON TRAFFIC SIGNAL VOLUME WARRANTS. FINAL REPORT

This study reports on two methods used to determine the significance of variation in the percent of right turns on side street average vehicular delay at two-way stop sign controlled intersections. The first method utilized the Traffic Experimental and Analytical Simulation (TEXAS) microcomputer model to evaluate the right turn factor on side street delay for various hypothetical geometric configurations and volume levels. Statistical analyses of the results revealed that the right turn factor was not significant for any of the scenarios tested. However, the validity of the findings was questionable, as the model was highly sensitive to the random seed number combinations used to generate the simulated traffic stream. The second method involved a statistical analysis of an available set of field data collected at stop sign controlled intersections. The data were divided into two groups based on the number of lanes on the side street. A regression procedure revealed that the right turn percentage was significant in predicting delay for the case of two lanes on the side street, but not for the one lane case.

  • Corporate Authors:

    Arizona State University, Tempe

    Center for Advanced Research in Transportation
    Tempe, AZ  United States  85287

    Arizona Department of Transportation

    206 South 17th Avenue
    Phoenix, AZ  United States  85007

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Radwan, A E
    • Eure, E T
  • Publication Date: 1991-3

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 127 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00611909
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-AZ91-307, CART-1990-2
  • Contract Numbers: PL-1-35(307)
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Aug 31 1991 12:00AM