USER GUIDE TO CONTRAM VERSION 4

Contram is a traffic assignment model for use in the design of traffic management schemes. The model predicts vehicle routes, flows and queues in a network of streets and junctions; junctions may be controlled by traffic signals or "give-way" rules. It is assumed that the numbers of trips between each origin and destination are known and that they may vary with time so that the growth and decay of congestion in peak periods can be studied. Allowance is made for the physical size of queues which may block back and restrict the throughput capacity at upstream junctions. Up to three classes of vehicles (eg cars, buses and lorries) can be represented, and selected vehicles (usually buses) can be sent along fixed routes. Contram provides comprehensive information on traffic conditions, including link delay times, turning movements and fuel consumption, to help the traffic engineer to understand and assess the merits of alternative traffic management schemes. This user guide gives a brief description of the model, details of data input and output, a test example to illustrate the use of the model and an outline of the structure and operation of the computer program. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02667045
• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • LEONARD, D R
  • GOWER, P
• Publication Date: 1982

Media Info

• Features: Appendices; Figures; References;
• Pagination: 68 p.
• Serial:
  • Publication of: Transport and Road Research Laboratory
  • Publisher: Transport and Road Research Laboratory (TRRL)
  • ISSN: 0266-7045

Subject/Index Terms

• TRT Terms: Computer programs; Forecasting; Fuel consumption; Highway traffic control; Intersections; Itinerary; Manuals; Mathematical models; Networks; Peak periods; Queuing; Roads; Routes; Textbooks; Traffic assignment; Traffic congestion; Traffic delays; Traffic flow; Traffic simulation; Turning traffic
• Uncontrolled Terms: Road networks; Turning movements
• ITRD Terms: 632: Congestion (traffic); 132: Forecast; 232: Fuel consumption; 699: Itinerary; 455: Junction; 6473: Mathematical model; 612: Peak hour; 6594: Queue; 1053: Road network; 8645: Software; 8526: Textbook; 679: Traffic assignment; 671: Traffic flow
• Subject Areas: Energy; Highways; Operations and Traffic Management; Planning and Forecasting; I71: Traffic Theory; I72: Traffic and Transport Planning; I73: Traffic Control;

Filing Info

• Accession Number: 00368672
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: SR 735 Monograph, HS-034 178
• Files: HSL, ITRD, TRIS, ATRI
• Created Date: Jan 31 1983 12:00AM