INVESTIGATION OF TRAFFIC SPEEDS AND ACCIDENTS ON URBAN ROADS

This paper describes a study by the Transport Research Laboratory (TRL), which aims to increase knowledge about speed distributions and provide a better understanding of the speed-accident relationship for urban roads in the UK. In 1992, TRL commissioned Wootton Jeffreys Consultants to collect data on speeds and speed distributions on urban roads in 100 randomly selected locations, 94 of which were in 30mph speed zones and six in 40mph zones. Speed data were collected separately in each of two directions, and analysed statistically, using non-hierarchical cluster analysis and linear discrimant analysis. As a result, the links were classified into: (1) highly congested town roads; (2) typical inner city link roads; (3) suburban link roads; and (4) country (fast) link roads. The mean link speeds of these classes were 20.7mph, 24.5mph, 28.7mph and 33.1mph, respectively. A well-fitting statistical model was developed, that provided some remarkable insights into the relationship between speed and accidents. Further research is needed, to understand this relationship well enough to develop practical strategies for accident reduction. For the covering abstract see IRRD 870107.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0860502716
• Corporate Authors:

  PTRC Education and Research Services Limited

  Glenthorne House, Hammersmith Grove
  London W6OL9,   England 
• Authors:
  • BARUYA, A
  • FINCH, D J
• Publication Date: 1994-9

Language

• English

Media Info

• Features: References;
• Pagination: p. 219-30
• Serial:
  • TRAFFIC MANAGEMENT AND ROAD SAFETY. PROCEEDINGS OF SEMINAR J HELD AT THE 22ND PTRC EUROPEAN TRANSPORT FORUM, UNIVERSITY OF WARWICK, ENGLAND, SEPTEMBER 12-16, 1994. VOLUME P381
  • Publisher: PTRC Education and Research Services Limited
  • ISSN: 0952-3103

Subject/Index Terms

• TRT Terms: Conferences; Crash rates; Mathematical analysis; Mathematical models; Policy; Speed; Statistics; Traffic; Traffic congestion; Urban areas
• Geographic Terms: United Kingdom
• ITRD Terms: 1612: Accident rate; 6471: Analysis (math); 8525: Conference; 632: Congestion (traffic); 6473: Mathematical model; 173: Policy; 5408: Speed; 6555: Statistics; 755: Traffic; 8119: United Kingdom; 313: Urban area
• Subject Areas: Data and Information Technology; Operations and Traffic Management; Policy;

Filing Info

• Accession Number: 00681114
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-86050-271-6
• Files: ITRD
• Created Date: Jul 20 1995 12:00AM