ANALYSIS OF THE PERFORMANCE OF A SCOOT UTC SYSTEM

This paper reports how data from SCOOT was used to conduct a 'before- and-after' survey of the effectiveness of a SCOOT urban traffic control (UTC) system in Aberdeen, Scotland. Data from the SCOOT model were collected for three one-hour periods (morning peak, midday and afternoon peak) during each of five working days, before and after introducing SCOOT signal control. The data were analysed statistically, using the SPSS statistical package, and then further analysed using a Lotus 123 spreadsheet. The data were collated to give summaries at ten-minute intervals during each period, and summarised to give vehicle flows, delays, congested intervals and stops in each of the periods. The average of these quantities are tabulated for both SCOOT operation and the previously used non-SCOOT traffic control systems. Statistical t-tests were performed to estimate the significance of differences between these averages. It was found that SCOOT increased total traffic flows by about 5%, decreased average delays by 29% to 43%, reduced the number of congested intervals by about 32%, and reduced the average number of stops by about 1%. It is estimated that average benefits for road users in Aberdeen are likely to be about 4 million pounds per year. 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:
  • ROBERTSON, D I
  • JACKSON, P C
• Publication Date: 1994-9

Language

• English

Media Info

• Features: References;
• Pagination: p. 231-9
• 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: Computer programs; Conferences; Peak periods; Statistics; Traffic congestion; Traffic control; Traffic delays; Traffic flow; Traffic signals; Urban areas
• Geographic Terms: United Kingdom
• ITRD Terms: 8525: Conference; 632: Congestion (traffic); 9010: Delay; 612: Peak hour; 8645: Software; 6555: Statistics; 654: Traffic control; 671: Traffic flow; 565: Traffic signal; 8119: United Kingdom; 313: Urban area
• Subject Areas: Data and Information Technology; Operations and Traffic Management;

Filing Info

• Accession Number: 00681115
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-86050-271-6
• Files: ITRD
• Created Date: Jul 20 1995 12:00AM