An NCHRP Project 3-27 comprehensive guidelines were developed to help traffic engineers evaluate the costs and benefits of various control alternatives while taking roadway and traffic conditions into account. Although the emphasis was on traffic control at isolated intersections, adjacent intersections were considered in regard to the need for coordinated operation. This digest discusses the approach used and gives the findings and conclusions of the study. Graphs are presented giving a comparison of controller performance in terms of delay per vehicle and percent stops per vehicle.

  • Record URL:
  • Supplemental Notes:
    • The Final Report of NCHRP project 3-27, Guidelines for Selecting Traffic Signal Control at Individual Intersections by Philip J. Tarnoff and Peter S. Parsonson, will not be published in the regular NCHRP series. Copy available on a loan basis from NCHRP Program Director. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
  • Corporate Authors:

    Transportation Research Board

    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Publication Date: 1980-2

Media Info

  • Media Type: Digital/other
  • Features: Figures; References;
  • Pagination: 7 p.
  • Serial:
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 00325962
  • Record Type: Publication
  • Report/Paper Numbers: HS-028 679
  • Files: HSL, TRIS, TRB
  • Created Date: Jun 30 1984 12:00AM