RELATIONSHIP OF ACCIDENT PATTERNS TO TYPE OF INTERSECTION CONTROL

The change in accident patterns accompanying a change in intersection control was investigated. The investigation include a review of previously made studies, an analysis of before and after accident data, and a detailed statistical analysis of a large, specially assembled, nationwide accident data base. Analysis of variance and regression techniques was used to show that the relationship of accident patterns to type of control must be represented by a complex model and that a simple-signal-no-signal division cannot explain changes in accident patterns. A large number of different measures of effectiveness that describe changes in accident patterns were computed and analyzed. Hypothesis testing revealed that, although there was a definite shift in the distribution of accident types, there was no evidence that signalization, by itself, would lead to a significant decrease in net accident-related disutility, especially for traffic signals not warranted by traffic volume. No conclusive evidence was found to justify a general reduction of minimum volume requirements for rural conditions or high-accident locations.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1975/540/540-001.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=RELATIONSHIP+OF+ACCIDENT+PATTERNS+TO+TYPE+OF+INTERSECTION+CONTROL&author=G.+King&author=R.+Goldblatt&publication_year=1975
• Availability:
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Traffic Control Devices. 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:
  • King, G F
  • Goldblatt, R B
• Conference:
  • 54th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia
  • Date: 1975-1-13 to 1975-1-17
• Publication Date: 1975

Media Info

• Media Type: Print
• Features: References; Tables;
• Pagination: pp 1-12
• Monograph Title: Urban Accident Patterns
• Serial:
  • Transportation Research Record
  • Issue Number: 540
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Analysis of variance; Before and after studies; Crashes; Databases; Intersections; Regression analysis; Statistical analysis; Traffic control
• Uncontrolled Terms: Patterns
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00126822
• Record Type: Publication
• ISBN: 0309023939
• Files: TRIS, TRB
• Created Date: Dec 16 1975 12:00AM