ASSESSMENT OF INCIDENT-INDUCED IMPACTS ON THE PERFORMANCE OF AN ARTERIAL NETWORK

This paper presents a simulation approach to the assessment of incident-induced impacts on a commuting corridor between the western suburbs and the central business district (CBD) area in Brisbane. A microscopic simulation model was calibrated for the study area and used to assess the impacts of simulated incidents on average travel times, speeds, fuel consumption and environmental emissions. The model was found to replicate (under-predict) traffic conditions within 15% of observed volumes on the corridor. The impact of incidents was found to vary with severity (number of blocked lanes) and duration. Incidents blocking both lanes and lasting for 60 minutes resulted in 38% increase in network travel time; 15% increase in fuel consumption and 73% increase in hydrocarbon emissions. Section-specific impacts were more pronounced, resulting in an increase of more than 140% in travel times for an incident blocking the fast lane and lasting for 15 minutes on Coronation Drive. These impacts are expected to be greater on networks operating at or near capacity. The results reported in this paper demonstrate the feasibility of the approach and provide directions to extend the model's capabilities in evaluating the effectiveness of incident management plans in the study area.

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  • Corporate Authors:

    ITS America

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  • Authors:
    • Cottman, N
    • Dia, H
    • Thomas, K
  • Conference:
  • Publication Date: 2001

Language

  • English

Media Info

  • Features: References;
  • Pagination: 9p

Subject/Index Terms

Filing Info

  • Accession Number: 00964189
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Oct 22 2003 12:00AM