Considering Travel Time Reliability and Safety for Evaluation of Congestion Relief Schemes on Expressway Segments

In this paper, the authors present a methodology for estimating travel time reliability based on modeling travel time variations as a function of demand, capacity and weather conditions. Accidents are modeled as a function of traffic conditions. The methodology is able to evaluate impacts of congestion relief schemes on travel time reliability and safety. Reliability and congestion measures are first measured using data from a segment of an intercity expressway. The proposed methodology is then applied to develop a simulation model for estimating travel time reliability and the number of accidents on the test bed. The model is then applied in evaluating the impacts of opening the hard shoulder of the roadway to traffic and reducing the peak period travel time reliability and safety.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03861112
• Authors:
  • Mehran, Babak
  • Nakamura, Hideki
• Publication Date: 2009

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 55-70
• Serial:
  • IATSS Research
  • Volume: 33
  • Issue Number: 1
  • Publisher: International Association of Traffic and Safety Sciences
  • ISSN: 0386-1112

Subject/Index Terms

• TRT Terms: Highway capacity; Reliability (Statistics); Simulation; Traffic congestion; Traffic models; Travel demand; Travel time
• Subject Areas: Highways; Operations and Traffic Management; I70: Traffic and Transport;

Filing Info

• Accession Number: 01139111
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS, ATRI
• Created Date: Aug 31 2009 9:24AM