A traffic incident is one of the major sources for degrading network capacity, inducing traffic congestion, and decreasing network reliability. The impacts of a traffic incident on network reliability have been extensively studied with the use of static network equilibrium or dynamic simulation models. In this paper, an analytical reliability-based dynamic traffic assignment (DTA) model is proposed for assessing the temporal and spatial impacts of a traffic incident on network reliability. The proposed DTA model can be used to estimate the stochastic link flow pattern and route travel time distribution for examining the impacts of a traffic incident on the on-time arrival probability with and without dynamic speed limit (SL) control. It is shown that a traffic incident on a congested road during peak period will greatly decrease the on-time arrival probability, particularly when the incident has greater effects on link capacity degradation with longer duration. Under certain circumstances, SL control can be employed to reduce total network delay during the time intervals with a traffic incident.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Dynamic modelling of traffic incident impacts on network reliability


    Contributors:
    Li, Xingang (author) / Lam, William H.K. (author) / Shao, Hu (author) / Gao, Ziyou (author)

    Published in:

    Publication date :

    2015-10-21


    Size :

    17 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Modelling major traffic incident impacts and estimation of their associated costs

    Kabit, Mohamad Raduan bin / Charles, Phil / Ferreira, Luis et al. | Taylor & Francis Verlag | 2014


    Evaluation of arterial incident management impacts using traffic simulation

    Dia, H. / Cottman, N. | IET Digital Library Archive | 2006


    Generic Incident Model for Investigating Traffic Incident Impacts on Evacuation Times in Large-Scale Emergencies

    Collins, Andrew J. / Foytik, Peter / Frydenlund, Erika et al. | Transportation Research Record | 2014


    Dynamic Traffic Assignment Modeling for Incident Management

    Sisiopiku, Virginia P. | Online Contents | 2007