Researchers in developing countries are often faced with the issue of small sample sizes of crash data for the crash frequency analysis, due to the incomplete crash and information recording and reporting systems. In this study, we evaluated the application of the generalized estimating equation (GEE) procedure to deal with the temporal issue faced by researchers in developing countries. Using four-year crash data at exit ramps on a freeway in China, a GEE model was estimated. The results showed that the GEE procedure, with an exchangeable correlation structure, successively captured the temporal correlation in the longitudinal data of this study and was considered to outperform the traditional models in estimating the impacts of variables on crash counts.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Considering Temporal Correlation in Crash Data Analysis


    Contributors:
    Wan, Qian (author) / Liang, Qiyu (author) / Zheng, Baoli (author) / Wang, Hao (author) / Li, Zhibin (author)

    Conference:

    14th COTA International Conference of Transportation Professionals ; 2014 ; Changsha, China


    Published in:

    CICTP 2014 ; 3723-3730


    Publication date :

    2014-06-24




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Highway Traffic Crash Risk Prediction Method considering Temporal Correlation Characteristics

    Liping Zhao / Feng Li / Dongye Sun et al. | DOAJ | 2023

    Free access



    Comparative evaluation of temporal correlation treatment in crash frequency modelling

    Cheng, Wen / Gill, Gurdiljot Singh / Choi, Simon et al. | Taylor & Francis Verlag | 2018


    Research on the Crash Test Considering Pre-crash Technology

    Kai, Wang / Zhang, Changjiang / Liu, Dongchun | TIBKAT | 2022