BERGER-ROBERTSON METHOD FOR MEASURING INTERSECTION DELAY (ABRIDGEMENT)

In this manual procedure, which is based on several established mathematical and traffic engineering relationships, the total time period of interest (e.g. cycle length) is first divided into a sufficiently small number of equal intervals. Then the vehicles that stop in each interval are tallied separately, and the midpoint of the interval is assumed to represent the average arrivals of the vehicles in the interval. The number of previously stopped vehicles departing is also tallied by interval. The departure of these vehicles is assumed to be randomly distributed in the interval. The results from the above procedure have been compared with those obtained by using time-lapse photography (where frame counts per vehicle were recorded). The theoretical soundness of the model is attested to by its analytic correspondence to the time lapse data. The means and standard deviations are nearly identical, and the correlation between the two procedures are uniformly high. The operational practicality of the method is reflected in a similarly consistent relationship between the timelapse film data and the manual application of the method.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/615/615-009.pdf
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Highway Capacity and Quality of Service and Committee on Effectiveness of Operational Measures. 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.
• Authors:
  • Robertson, H Douglas
  • Berger, Wallace G
• Conference:
  • 55th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1976-1-19 to 1976-1-23
• Publication Date: 1976

Media Info

• Media Type: Digital/other
• Features: References; Tables;
• Pagination: pp 45-46
• Monograph Title: Capacity and measurement of effectiveness
• Serial:
  • Transportation Research Record
  • Issue Number: 615
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Alternatives analysis; Intersections; Measurement; Time lapse photography; Traffic delays; Traffic signal cycle
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00162983
• Record Type: Publication
• ISBN: 0309025915
• Files: TRIS, TRB
• Created Date: Oct 13 1977 12:00AM