HighlightsFive models were developed to explore weather impact on motorcycle crashes.The models with serial and severity variations of parameters were the superior ones.Increase in the air temperature reduced the possibility of a fatal motorcycle crash.Increase in air temperature increased the possibility of other severity outcomes.Occurrence of rainfall decreased the possibility of motorcycle crashes.

    AbstractMotorcycle crashes constitute a very high proportion of the overall motor vehicle fatalities in the United States, and many studies have examined the influential factors under various conditions. However, research on the impact of weather conditions on the motorcycle crash severity is not well documented. In this study, we examined the impact of weather conditions on motorcycle crash injuries at four different severity levels using San Francisco motorcycle crash injury data. Five models were developed using Full Bayesian formulation accounting for different correlations commonly seen in crash data and then compared for fitness and performance. Results indicate that the models with serial and severity variations of parameters had superior fit, and the capability of accurate crash prediction. The inferences from the parameter estimates from the five models were: an increase in the air temperature reduced the possibility of a fatal crash but had a reverse impact on crashes of other severity levels; humidity in air was not observed to have a predictable or strong impact on crashes; the occurrence of rainfall decreased the possibility of crashes for all severity levels. Transportation agencies might benefit from the research results to improve road safety by providing motorcyclists with information regarding the risk of certain crash severity levels for special weather conditions.


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    Titel :

    Predicting motorcycle crash injury severity using weather data and alternative Bayesian multivariate crash frequency models


    Beteiligte:
    Cheng, Wen (Autor:in) / Gill, Gurdiljot Singh (Autor:in) / Sakrani, Taha (Autor:in) / Dasu, Mohan (Autor:in) / Zhou, Jiao (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2017-08-29


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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