Modeling Speed Profiles of Turning Vehicles at Signalized Intersections

Turning vehicles need special attention in the context of the safety evaluation and improvement of signalized intersections. So far the safety assessment of intersections is mainly based on individual accident and conflict analyses. It might be possible in the future to complement these analyses with microscopic simulations. An important step into this direction is the modeling of speed profiles of turning vehicles. For a conflict analysis at the planning stage, these speed profiles with their stochastic character have to be predicted to assess different intersection layouts and signal settings and their impact on the likelihood and severity of conflicts. By using empirical data of vehicle trajectories collected at signalized intersections in Japan, a model is developed and presented, which provides stochastic speed profiles of free-flowing left- and right-turning vehicles. The speed profiles are sensitive to intersection layout and the vehicle speed and position at the beginning and ending of the maneuver. This model can be complemented by models reflecting the reaction to pedestrians, traffic signals, and other vehicles, which are beyond the scope of this paper, to provide a general framework for the generation of speed profiles of turning vehicles.

• Record URL:
  http://onlinepubs.trb.org/onlinepubs/conferences/2011/RSS/3/Wolfermann,A.pdf
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• Supplemental Notes:
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  Transportation Research Board

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• Authors:
  • Wolfermann, Axel
  • Alhajyaseen, Wael K M
  • Nakamura, Hideki
• Conference:
  • 3rd International Conference on Road Safety and Simulation
  • Location: Indianapolis Indiana, United States
  • Date: 2011-9-14 to 2011-9-16
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 17p
• Monograph Title: 3rd International Conference on Road Safety and Simulation

Subject/Index Terms

• TRT Terms: Signalized intersections; Speed; Speed zones; Traffic crashes; Traffic safety; Traffic signals; Traffic simulation; Turning traffic
• Geographic Terms: Japan
• Subject Areas: Highways; Safety and Human Factors; I82: Accidents and Transport Infrastructure;

Filing Info

• Accession Number: 01506194
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Jan 30 2014 1:14PM