Evaluation of traffic safety at un-signalized intersections using microsimulation: a utilization of proximal safety indicators

Crashes at intersections account for over 50% of all urban road crashes in many cases. The need to reduce these crashes has inspired considerable research on the development and evaluation of intersection traffic safety. A micro-level behavioral approach for estimating crash potential at unsignalized intersections for different traffic conditions is introduced in this paper. Proximal safety indicators representing the temporal and spatial proximity characteristics of unsafe interactions and near-accidents are explored and a practical implementation of post-encroachment time (PET) is carried out in the safety evaluation process to this end. Simulation results demonstrate the sensitivity of PET to speed limit changes on roads and show that it can be used to carry out uncontrolled intersection safety evaluations. More generally, the authors demonstrate the ability of microsimulation to evaluate safety effects of policy measures like speed limit.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/18245463
• Authors:
  • Pirdavani, A
  • Brijs, T
  • Bellemans, T
  • Wets, G
• Publication Date: 2010-11

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 43-50
• Serial:
  • Advances in Transportation Studies
  • Volume: 22
  • Publisher: University Roma Tre
  • ISSN: 1824-5463
  • Serial URL: http://www.atsinternationaljournal.com/

Subject/Index Terms

• TRT Terms: Crashes; Microsimulation; Speed limits; Traffic safety; Unsignalized intersections
• Uncontrolled Terms: Behavioral techniques; Micro-level; Postencroachment time; Proximity; Safety evaluation
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01329144
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Feb 16 2011 1:41PM