This report presents the results of the evaluation of the five alternatives of the first-generation traffic control strategy for the computerized Urban Traffic Control System and Bus Priority System in Washington, D. C. The five control alternatives evaluated are: District 3-dial, time-of-day, traffic responsive, critical intersection control, and bus priority. They were evaluated to assess their relative impact on traffic during typical weekday morning, midday, and evening periods. UTCS/BPS surveillance data and moving car studies were used for evaluation. The computer-based traffic responsive alternative generally matched or exceeded the performance of the other traffic control alternatives. The overall differences in delay between the various alternatives and the traffic responsive alternative were relatively small (2% degradation to 4% improvement). The critical intersection control alternative improved the performance of several intersections, particularly where offsets were poor. The bus priority alternative reduced bus delays by as much as 35% while increasing overall traffic delays less then 3%.

  • Supplemental Notes:
    • Paper copy also available in set of 3 reports as PB-244109-SET.
  • Corporate Authors:

    JHK & Associates


    Peat, Marwick, Mitchell and Company

    1025 Connecticut Avenue, NW
    Washington, DC  United States  20036
  • Authors:
    • Kay, J L
    • Allen, J C
    • Bruggeman, J M
  • Publication Date: 1975-3

Media Info

  • Pagination: 27 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00099900
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-75- 26 Final Rpt., FCP 32B4-254
  • Contract Numbers: FH-11-8242
  • Files: TRIS, USDOT
  • Created Date: Nov 5 1976 12:00AM