Management of traffic-related effects of heavy vehicles on urban freight corridors

A computer-based microsimulation traffic model was created of a multi-lane arterial corridor, including coordinated traffic signals. Individual vehicles progressed along the corridor, with each vehicle following its leader and changing lanes when advantageous and safe to do so. The longitudinal vehicle dynamic behavior of each vehicle was modeled in detail, with heavy vehicles accelerating at a lower rate that light vehicles. The model was calibrated with data collected from GPS-equipped chase car surveys conducted on an urban corridor in Brisbane, Australia. Corridor performance was reported in terms of intersection capacity and delays as well as travel speeds and stop rates for each vehicle type. The performance of the corridor was found to be sensitive to traffic control measures including the speed limit and traffic signal controller settings such as cycle time and progression design speed. A range of freight policy scenarios were examined, including the effects of increasing freight volumes, freight vehicle mode choice, and vehicle type-specific lane restrictions. Some policies having the potential to improve corridor traffic performance and freight efficiency were able to be identified. Advance detection of heavy vehicles approaching a traffic signal and extension of the green signal until their passage was found to offer benefits to all vehicles on the corridor.

Language

  • English

Media Info

  • Pagination: 10p
  • Monograph Title: 9th International Symposium on Heavy Vehicle Weights and Dimensions, June 18-22, 2006, Pennsylvania State University, State College, Pennsylvania

Subject/Index Terms

Filing Info

  • Accession Number: 01388460
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 23 2012 12:55AM