TECHNIQUES FOR MEASURING OVER-ALL SPEEDS IN URBAN AREAS

TEST COURSES WERE ESTABLISHED ON THREE IMPORTANT SIGNALIZED STREETS IN OAKLAND, SAN FRANCISCO, AND LOS ANGELES. THE PRINCIPAL VARIABLE WAS THE DRIVING TECHNIQUE OF THE DRIVERS OF THE TEST CARS. TRAVEL TIMES OF TEST RUNS WERE COMPARED TO THE AVERAGE TRAVEL TIME OF ALL CARS TRAVESRING THE ENTIRE COURSE, AS MEASURED BY TIME AND LICENSE CHECKS AT EACH END OF THE COURSE ON APPROXIMATELY 20 PERCENT OF THE CARS. THE STUDY ALSO INDICATES THE NUMBER OF "AVERAGE" TEST-CAR RUNS NEEDED IN VARIOUS TRAFFIC SITUATIONS, IN ORDER TO PRODUCE AVERAGE TEST-CAR TRAVEL TIMES WITHIN A SUFFICIENT RANGE OF ACCURACY. IT WAS FOUND THAT MORE TEST RUNS ARE NEEDED TO PRODUCE SIGNIFICANT RESULTS FOR PERIODS OF CONGESTION THAN AT OTHER TIMES, AND COORDINATED SIGNAL TIMING TENDS TO DECREASE THE NECESSARY NUMBER OF CARS IN THE TRAFFIC STREAM IS A PRACTICAL METHOD OF MEASURING OVER-ALL TRAVEL TIME ON IMPORTANT SIGNALIZED STREETS. /AUTHOR/

  • Supplemental Notes:
    • Vol 29, pp 311-318, 8 FIG, 2 TAB, 3 PHOT
  • Authors:
    • Berry, D S
    • Green, F H
  • Publication Date: 1950

Media Info

  • Monograph Title: Proceedings of the Twenty-Ninth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 13-16, 1949.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00228080
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jul 25 1971 12:00AM