High-Performance Traffic Flow Microsimulation for Large Problems

Traffic flow microsimulations are interesting for transport planning problems due to their high temporal and spatial resolution. Unfortunately, most of them involve high computational costs making them impractical for running large scale scenarios. This paper presents how to extend the previous event-driven queue-based mircosimulation to run efficiently on parallel computers. Using appropriate load balancing and minimizing communication interfaces, the authors are able to simulate a test scenario involving 7 million simulated person days on a road network with 28k links in 87 seconds on 64 CPUs. Furthermore, the authors add support for signaled intersections that makes the model well suited for application to urban street networks. Finally, the authors show that our resulting model reproduces a reasonable relation between traffic flow and density similar to fundamental diagrams extracted from real world counts data.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Charypar, David
  • Balmer, Michael
  • Axhausen, Kay W
• Conference:
  • Transportation Research Board 88th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2009-1-11 to 2009-1-15
• Date: 2009

Language

• English

Media Info

• Media Type: DVD
• Features: Figures; References;
• Pagination: 21p
• Monograph Title: TRB 88th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

• TRT Terms: Microscopic traffic flow; Signalized intersections; Traffic data; Traffic flow; Traffic queuing; Traffic simulation; Transportation planning; Travel surveys; Urban areas
• Uncontrolled Terms: Traffic networks
• Subject Areas: Highways; Planning and Forecasting; I73: Traffic Control;

Filing Info

• Accession Number: 01128817
• Record Type: Publication
• Report/Paper Numbers: 09-1492
• Files: TRIS, TRB
• Created Date: May 19 2009 7:48AM