Dynamic Speed Control to Improve Freeway Safety in Bad Weathers

Sight distance decreases in bad weather and stopping distance increases. Collisions may occur if vehicles on freeways encounter sudden deceleration under bad weather conditions. This study developed a dynamic speed control to reduce collision risks on freeways given various bad weather conditions. A car-following model was used to simulate the traffic operation in bad weather. The time-to-collision was used to evaluate the collision risks. Five typical bad weather conditions were tested. Results showed that the dynamic speed control algorithm effectively reduced collision risks in various types of bad weather conditions. The strategy outperformed the previous one in reducing collision potential.

• Record URL:
  https://doi.org/10.1061/9780784413623.358
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784413623
• Supplemental Notes:
  • © 2014 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Wan, Qian
  • Li, Wenyong
  • Liang, Qiyu
  • Wang, Hao
  • Li, Zhibin
• Conference:
  • 14th COTA International Conference of Transportation Professionals
  • Location: Changsha , China
  • Date: 2014-7-4 to 2014-7-7
• Publication Date: 2014-6

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 3743-3751
• Monograph Title: CICTP 2014: Safe, Smart, and Sustainable Multimodal Transportation Systems

Subject/Index Terms

• TRT Terms: Car following; Crashes; Highway operations; Highway safety; Sight distance; Speed control; Stopping distances; Weather conditions
• Subject Areas: Highways; Safety and Human Factors; I85: Safety Devices used in Transport Infrastructure;

Filing Info

• Accession Number: 01531160
• Record Type: Publication
• ISBN: 9780784413623
• Files: TRIS, ASCE
• Created Date: Jul 24 2014 3:21PM