Analysis Method of Operating Freeway Speed Limit Value Optimization Based on Stopping Sight Distance

To address the problem of unreasonable speed limits on existing freeways, a model based on net-transverse distance, flat curve radius, and speed was established from the perspective of stopping sight distance. The model has been applied to the optimization of speed in the “Xing Gan Freeway North Extension” project. The reasonable speed limit value is obtained according to the model combined with the graphic design index. The traffic simulation software VISSIM is redeveloped from the micro level and combines with COM interface technology to simulate speed limit schemes. The trajectory file was imported into the SSAM for analysis. The speed standard deviation and traffic conflict rate are selected to evaluate different speed limit schemes. Compared with the actual speed limit value of 100 km/h, the speed standard deviation and traffic conflict rate reduced by 1.03% and 57% when the speed limit value was increased to 120 km/h.

• Record URL:
  • https://doi.org/10.1061/9780784485040.010
• Record URL:
  • https://ascelibrary.org/doi/10.1061/9780784485040.010
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784485040
• Supplemental Notes:
  • © 2023 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Ai, Bin
  • Deng, Mingjun
• Conference:
  • 23rd COTA International Conference of Transportation Professionals
  • Location: Beijing , China
  • Date: 2023-7-14 to 2023-7-17
• Publication Date: 2023

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 97-106
• Monograph Title: CICTP 2023: Emerging Data-Driven Sustainable Technological Innovation in Transportation

Subject/Index Terms

• TRT Terms: Freeway operations; Highway safety; Optimization; Speed limits; Stopping sight distance; Traffic simulation
• Geographic Terms: China
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01909271
• Record Type: Publication
• ISBN: 9780784485040
• Files: TRIS, ASCE
• Created Date: Feb 22 2024 4:13PM