This report presents the results of a study to develop procedures for determining locations of detectors for advanced traffic control strategies. The project is a part of the continuing research for the Urban Traffic Control System/Bus Priority System (UTCS/BPS) in Washington D.C. The work included defining criteria for surveillance data for 1st, 2nd, and 3rd generation UTCS strategies, identifying links requiring detectors, developing detector placement criteria within the link, preparing detector recommendations specific to the UTCS network, and developing detector placement guidelines for other locations. It was found that 3rd generation requires detectors on essentially all links in the UTCS network; 2nd generation requires at least every other link; and 1st generation approximately every fourth link. Critical intersections require data from each approach link. Within a link, a critical lane can usually be identified and that lane best represents demand. One detector, approximately 210 feet upstream of the intersection, tended to be adequate for volume, occupancy, and speed. This volume covers the details of the study and another volume contains the handbook information. The other volume is FHWA No. 75-91. /FHWA/

  • Corporate Authors:

    JHK & Associates


    Peat, Marwick, Mitchell and Company

    345 Park Avenue
    New York, NY  United States  10022
  • Authors:
    • Henry, R D
    • SMITH, S A
    • Bruggeman, J M
  • Publication Date: 1975-9

Media Info

  • Pagination: 213 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00131057
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-75- 92 Intrm Rpt., FCP 32B4254
  • Files: TRIS, USDOT
  • Created Date: Apr 21 1976 12:00AM