VALIDATION WORK ON CONTRAM - A MODEL FOR USE IN THE DESIGN OF TRAFFIC MANAGEMENT SCHEMES

The paper describes validation work on the traffic assignment model CONTRAM which is being developed for use in the design of traffic management schemes. CONTRAM can predict the flows and queues of vehicles in a network during peak periods and can take into account the effects of oversaturated conditions which may occur during these periods. The model assumes that drivers have a good knowledge of traffic conditions and choose minimum journey time routes through the network. Comprehensive data on traffic movements were collected in the town of Reading, for morning and evening peak periods, using a number plate survey. The data were analysed to provide time-varying origin-destination demands, flows, turning movements, journey times and routes and comparisons were carried out with the traffic patterns predicted by the model. Day to day variations in traffic patterns were also examined. The results suggest that CONTRAM is a realistic model. It is shown that observed patterns of flows, turning movements and journey times are reasonably stable from day to day and that the model predictions generally lie within the day to day variations. (a) (TRRL)

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 135-153

Subject/Index Terms

Filing Info

  • Accession Number: 00325663
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-86050-061-6
  • Report/Paper Numbers: NP180
  • Files: ITRD, TRIS
  • Created Date: Jun 12 1981 12:00AM