Gap Acceptance at U-turn Median Openings – A Case Study in Hanoi, VietNam.

U-turn median openings are locations where traffic congestion and traffic crashes are likely to occur. Understanding gap acceptance and driver behavior at these locations are crucial to reduce traffic congestion and traffic crashes. This paper tried to consider the geometry (i.e., median width and opening distance) in the analyses of gap acceptance. In addition, an inverse Time-to-Collision was introduced to analyze the gap acceptance from a safety viewpoint. The result indicated that when the U-turning vehicles perceive a possible collision, they are likely to reject the gap. The authors concluded that the narrower median width and longer opening distance significantly result in a higher probability of gap acceptance. Based on these findings, the paper proposed some suggestions to road designers and managers at the U-turn locations, which can minimize the likelihood of traffic crashes at this facility.

Language

  • English
  • Japanese

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01854939
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Aug 18 2022 11:30AM