AN ALTERNATIVE PROCEDURE FOR ESTIMATING SPEED DISTRIBUTION PARAMETERS ON MOTORWAYS AND SIMILAR ROADS

A method is given for estimating speed distribution parameters on motorways and similar roads based on counts made from a moving vehicle. The method follows the same observational procedure as that recently proposed by Duncan, but provides an analytical solution rather than a graphical method for obtaining the speed distribution parameters. In addition, the distributions of speeds in both time and space are examined, and the relationship between these is obtained for an Erlang speed distribution curve. Sampling estimates for speed distribution parameters are obtained from a simulation model. /Author/ /TRRL/

• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Ashworth, R
• Publication Date: 1976-2

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 25-29
• Serial:
  • Transportation Research /UK/
  • Volume: 10
  • Issue Number: 1
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Analysis; Freeways; Highways; Mathematical analysis; Numbers; Sampling; Simulation; Speed; Speed distribution; Statistical distributions; Traffic counting; Traffic counts; Vehicles
• Old TRIS Terms: Analytical method
• ITRD Terms: 1057: Air transport network; 6471: Analysis (math); 6572: Distribution (stat); 2752: Motorway; 6432: Number; 9103: Simulation; 5408: Speed; 689: Traffic count
• Subject Areas: Highways; Operations and Traffic Management; Vehicles and Equipment; I71: Traffic Theory;

Filing Info

• Accession Number: 00137735
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Apr 13 1977 12:00AM