Traditionally, crash frequency analyses have been undertaken at the macro- and micro-levels, independently. This study proposes a Bayesian integrated spatial crash frequency model, which links the crash counts of macro- and micro-levels based on the spatial interaction. In addition, the proposed model considers the spatial autocorrelation of the different types of road entities (i.e. segments and intersections) at the micro-level with a joint structure. The modelling results indicated that the integrated model can provide better model performance for estimating macro- and micro-level crash counts, which validates the concept of integrating the models for the two levels. Also, the integrated model could simultaneously identify both macro- and micro-level factors contributing to the crash occurrence. Subsequently, a novel hotspot identification method was suggested, which enables us to detect hotspots for both macro- and micro-levels with comprehensive information from the two levels.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Integrating macro- and micro-level safety analyses: a Bayesian approach incorporating spatial interaction


    Beteiligte:
    Cai, Qing (Autor:in) / Abdel-Aty, Mohamed (Autor:in) / Lee, Jaeyoung (Autor:in) / Huang, Helai (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    29.11.2019


    Format / Umfang :

    22 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Incorporating Road Network Structures into Macro Level Traffic Safety Analysis

    Jin, Yu / Wang, Xue-song / Chen, Xiao-hong | ASCE | 2011


    Integrating Micro and Macro Models: Mutual Benefits

    Baekgaard, H. / Modelling and Simulation Society of Australia | British Library Conference Proceedings | 1995


    Incorporating aircraft extent into airport safety analyses

    Waldron, Timothy | IEEE | 2013

    Freier Zugriff