METHOD OF ESTIMATING THE FREE SPEED DISTRIBUTION FOR A ROAD

A simple procedure for estimating the free speed distribution, which can be used when interference between vehicles is substantial, is developed. The procedure requires vehicles traveling at speeds less than their free speed to be identified. Criteria for defining such impeded vehicles are described and compared using data from the M4 motorway. Free speed distributions are obtained for each lane and the estimates of mean free speed are compared with those obtained from a linear regression of average speed against flow.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1767714
• Corporate Authors:

  Operations Research Society of America

  428 East Preston Street
  Baltimore, MD  United States  21202
• Authors:
  • Branston, D
• Publication Date: 1979-5

Media Info

• Features: References;
• Pagination: p. 130-145
• Serial:
  • Transportation Science
  • Volume: 13
  • Issue Number: 2
  • Publisher: Institute for Operations Research and the Management Sciences (INFORMS)
  • ISSN: 0041-1655
  • Serial URL: http://transci.journal.informs.org/

Subject/Index Terms

• TRT Terms: Highway transportation; Highways; Linear regression analysis; Mathematical models; Operations research; Speed; Traffic speed; Traffic surveys; Vehicles
• Uncontrolled Terms: Free speed
• Subject Areas: Highways; Operations and Traffic Management; Vehicles and Equipment;

Filing Info

• Accession Number: 00310612
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Apr 22 1980 12:00AM