Traffic safety analysis at interchange exits using the surrogate measure of aggressive driving behavior and speed variation

Because of heavy traffic on urban expressways, the exits of expressway interchanges have become accident-prone sites. This study explores the impacts of various traffic control devices and road conditions on road safety at interchange exits based on driving behavior data from navigation software. The traffic order index (TOI) based on driving behavior and speed variation is used to evaluate road safety. The general safety characteristics and partitioned safety characteristics of interchange exit sections for different traffic control devices and under different road conditions were described, and a structural equation model (SEM) was constructed to observe the influences of the traffic control devices, road conditions, congestion degree, and time on road safety. The results show that traffic control devices (the number of warning signs, number of advance exit signs and complexity of diagrammatic guide signs) and road conditions (the number of lanes and merging conflicts within 500 m) have significant influences on the road safety of interchange exits. Road conditions have the greatest impact on the safety of interchange exits, followed by the congestion index, traffic control devices, and time. The results could help traffic management departments reconstruct or rehabilitate traffic control devices and enable reasonable road planning at interchange exits. The safety evaluation method for traffic control devices and road conditions based on driving behavior data collected from navigation software could be further used on other roads.

• Record URL:
  • https://doi.org/10.1080/19439962.2022.2098439
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19439962
• Supplemental Notes:
  • © 2022 Taylor & Francis Group, LLC and The University of Tennessee 2022. Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Yao, Ying
  • Zhao, Xiaohua
  • Li, Jia
  • Ma, Jianming
  • Zhang, Yunlong
• Publication Date: 2023-5

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 515-540
• Serial:
  • Journal of Transportation Safety & Security
  • Volume: 15
  • Issue Number: 5
  • Publisher: Taylor & Francis
  • ISSN: 1943-9962
  • EISSN: 1943-9970
  • Serial URL: http://www.tandfonline.com/loi/utss20#.U2qTJPldWCm

Subject/Index Terms

• TRT Terms: Crash causes; Driver performance; Interchange elements; Off ramps; Safety analysis; Speed; Traffic control devices
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01885797
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 22 2023 10:10AM