Safety Analysis of Freeway Interchanges

While investigating Jingjintang Expressway's traffic accidents, it is clear that, crash frequency and rates at interchange areas re more severe than at other locations. To further explore the relationship between crash rates and characteristics of freeway geometric design features, this study analyzed the existing safety problems at Jingjintang Expressway’s interchanges. Particularly the authors examined crash characteristics at ramps including length of acceleration lanes and deceleration lanes, ramp geometric design, traffic control devices at ramps and locations of toll plazas. The driver behavior and performance overloaded trucks on ramps were also studied. The results of the study have clearly shown that it is important to have a uniform traffic information system and a consistent traffic control system. Most importantly, the study has concluded that the length requirements in the authors' current design specification for ramp acceleration and decoration lanes are not sufficient for safety, particularly for large vehicles. A set of recommendations is made as a result of this study.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784409619
• Corporate Authors:

  American Society of Civil Engineers

  Transportation and Development Institute
  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400

  China Academy of Transportation Sciences

  Ministry of Communications
  Beijing,   China  100029
• Authors:
  • He, Yu Long
  • Sun, Xiaoduan
  • Coakley, Richard C
• Conference:
  • The First International Symposium on Transportation and Development – Innovative Best Practices (TDIBP 2008)
  • Location: Beijing , China
  • Date: 2008-4-24 to 2008-4-26
• Publication Date: 2008

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 252-257
• Monograph Title: Transportation and Development Innovative Best Practices 2008: Proceedings of the First International Symposium

Subject/Index Terms

• TRT Terms: Acceleration lanes; Crash rates; Deceleration lanes; Driver information systems; Freeways; Geometric design; Human factors in crashes; Interchange ramps; Interchanges; Risk assessment; Safety; Toll plazas; Traffic control devices; Traffic crashes; Vehicle safety
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors; Terminals and Facilities; I73: Traffic Control; I82: Accidents and Transport Infrastructure;

Filing Info

• Accession Number: 01111423
• Record Type: Publication
• ISBN: 9780784409619
• Files: TRIS
• Created Date: Sep 29 2008 11:47AM