SAFETY ISSUES IN DYNAMIC ROUTE GUIDANCE

Advanced Traveler Information Systems (ATIS) and related dynamic route guidance are core components of Intelligent Transportation Systems (ITS). ATIS provide traffic management and control centers the ability to communicate with suitably equipped road users in real time and supply route guidance instructions. Guidance is usually formulated on the basis of travel time as the sole cost element, with little attention to other costs such as environmental impact or traffic safety. The purpose of this paper is to present network-wide accident prediction models and to investigate the integration of these models with dynamic route choice. Paramics, an ITS-ready microscopic traffic simulator, is employed for this investigation. A small portion of the Toronto network is used as a case study to illustrate the effect of safety considerations on traffic routing and network performance. Several accident prediction models were developed for nodes and links. The application of these models to the sample network shows that accounting for accident risk of road users in route guidance has a major influence on the distribution of traffic, which subsequently reduces the total expected number of accidents on the network. (A*) For the covering abstract see ITRD E110327.

• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Lord, D
  • GEORGI, A
  • Abdulhai, B
  • CHOO, K C
  • KOUTSOULIAS, P
• Conference:
  • PROCEEDINGS OF 6TH WORLD CONGRESS ON INTELLIGENT TRANSPORT SYSTEMS (ITS), HELD TORONTO, CANADA, NOVEMBER 8-12, 1999
• Publication Date: 1999

Language

• English

Subject/Index Terms

• TRT Terms: Conferences; Costs; Data communications; Drivers; Environmental protection; Intelligent transportation systems; Networks; Prevention; Route guidance; Safety; Simulation; Traffic control; Traffic flow; Transportation; Travel time; Trip length
• ITRD Terms: 1661: Accident prevention; 8525: Conference; 224: Cost; 8652: Data transmission (telecom); 1772: Driver; 2444: Environment protection; 8735: Intelligent transport system; 697: Journey time; 6473: Mathematical model; 1154: Network (transport); 8771: Route guidance; 1665: Safety; 9103: Simulation; 654: Traffic control; 671: Traffic flow
• Subject Areas: Operations and Traffic Management; Safety and Human Factors; Transportation (General);

Filing Info

• Accession Number: 00819055
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Nov 7 2001 12:00AM