TRAFFIC FLOW CHARACTERISTICS DURING RECURRENT EVENTS ON FREEWAYS

This paper reports on a study to evaluate traffic flow at a freeway work zone and at an additional site on the freeway where a police vehicle was noticeably present on the shoulder. The objective of the study was to assess traffic flow and traffic characteristics during recurrent events whose occurrence can be known in advance. It was also hoped that the effect of a visibly present police car on highway capacity at work sites and the variability of headway between vehicles could be evaluated. It was found that both cases led to a reduction in free flow of traffic and in highway capacity, during the time of the interruptions. In addition, increased traffic congestion and traffic queuing was noted upstream of the construction site, and the presence of the police car on the shoulder caused smaller headway between cars and decreased traffic speed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9040718520
• Corporate Authors:

  Delft University Press

  11 Mijnbouwplein
  Delft,   Netherlands 
• Authors:
  • Polus, A
  • Schwartzman, H
• Conference:
  • Second World Congress on Safety of Transportation: Imbalance between Growth and Safety?
  • Location: Delft, the Netherlands
  • Date: 1998-2-18 to 1998-2-20
• Publication Date: 1999

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 457-462

Subject/Index Terms

• TRT Terms: Free flow speeds; Freeways; Headways; Highway capacity; Police vehicles; Queuing; Shoulder; Traffic characteristics; Traffic congestion; Traffic flow; Traffic speed; Work zones
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00793844
• Record Type: Publication
• ISBN: 9040718520
• Files: TRIS
• Created Date: Jun 6 2000 12:00AM