Active Traffic Control for Oversaturated Intersection Group in Emergency Evacuation

In the emergency evacuation condition of an urban road network, desmic traffic congestion phenomenon may appear in grouped intersections. Aimed at achieving reasonable distribution and orderly operation of evacuation flow, this paper came up with an active traffic control method of congestion prevention in response to oversaturated intersections' traffic tide. First, the authors predict oversaturated intersections' traffic tide based on traffic flow which is calculated using the user equilibrium dynamic traffic assignment model (UE-DTA). Second, based on traffic flow calculated from system optimal dynamic traffic assignment model (SO-DTA), they find critical congestion routes that may cause desmic traffic congestion of grouped intersections, and select the recommended bypass routes which can be used to receive partial traffic flow from critical congestion routes. Third, they take the minimal gap between expected network traffic and system optimal traffic as an objective to calculate the optimal pre-diversion volumes from critical congestion routes to recommended bypass routes in the short term. Developing trend of oversaturated intersection group can be reserved via the active diversion of congestion routes' flow in advance.

• Record URL:
  https://doi.org/10.1061/9780784412442.093
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784412442
• Supplemental Notes:
  • © 2012 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Huang, Zhengfeng
  • Ren, Gang
  • Fan, Chao
• Conference:
  • Twelfth COTA International Conference of Transportation Professionals
  • Location: Beijing , China
  • Date: 2012-8-3 to 2012-8-6
• Publication Date: 2012-8

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 903-911
• Monograph Title: CICTP 2012: Multimodal Transportation Systems—Convenient, Safe, Cost-Effective, Efficient

Subject/Index Terms

• TRT Terms: Evacuation; Hazards and emergency operations; Highway traffic control; Intersections; Oversaturation (Traffic flow); Traffic congestion; Traffic diversion
• Uncontrolled Terms: Road networks
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01500621
• Record Type: Publication
• ISBN: 9780784412442
• Files: TRIS, ASCE
• Created Date: Nov 12 2013 2:35PM