Bus crash severity in the United-States: The role of driver behavior, service type, road factors and environmental conditions

Sigal Kaplan, Carlo Giacomo Prato

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    Abstract

    Recent years have witnessed a growing interest in improving bus safety operations worldwide. While in the United States buses are considered relatively safe, the number of bus accidents is far from being negligible, triggering the introduction of the Motor-coach Enhanced Safety Act of 2011.The current study investigates the underlying risk factors of bus accident severity in the United States. A generalized ordered logit model is estimated in order to account for the ordered nature of severity, while allowing the violation of the proportional odds assumption across severity categories. Data for the analysis are retrieved from the General Estimates System (GES) database for the years 2005-2009. Results show that accident severity increases: (i) for young bus drivers under the age of 25; (ii) for drivers beyond the age of 55, and most prominently for drivers over 65 years old; (iii) for female drivers; (iv) for very high (over 65 mph) and very low (under 20 mph) speed limits; (v) at intersections; (vi) because of inattentive and risky driving.
    Original languageEnglish
    Publication date2012
    Number of pages20
    Publication statusPublished - 2012
    Event12th Conference of the Pan American Society of Transportation Research - Santiago, Chile
    Duration: 24 Sep 201227 Sep 2012
    Conference number: 12

    Conference

    Conference12th Conference of the Pan American Society of Transportation Research
    Number12
    CountryChile
    CitySantiago
    Period24/09/201227/09/2012

    Bibliographical note

    Proceedings of the 12th Conference of the Pan American Society of Transportation Research, September 24-27, Santiago de Chile, Chile.

    Keywords

    • bus accidents
    • injury severity
    • generalized ordered logit model

    Cite this

    Kaplan, S., & Prato, C. G. (2012). Bus crash severity in the United-States: The role of driver behavior, service type, road factors and environmental conditions. Paper presented at 12th Conference of the Pan American Society of Transportation Research, Santiago, Chile.