This paper evaluates the impact of roundabouts on road safety in two geographical regions: California as a whole and the San Joaquin Valley. This paper examines the effectiveness of roundabouts by analyzing their influence on reducing crashes, injuries, and fatalities through a comparative analysis of crash data before and after roundabout construction. Data preparation and analysis were conducted using Excel and ArcGIS, employing various time-based evaluation frameworks to assess crashes within defined vicinity zones. Additionally, the study explores the impact of roundabouts on the safety of other road users, particularly active travelers such as pedestrians and bicyclists, and investigates the role of drinking-related crashes to determine whether roundabouts contribute to reducing such incidents. The findings provide data-driven insights into crash patterns and emphasize the potential benefits of roundabouts, addressing common concerns and helping to build community support for their implementation.


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    Title :

    Assessing the Safety Impacts of Roundabouts in California and the San Joaquin Valley


    Contributors:

    Conference:

    International Conference on Transportation and Development 2025 ; 2025 ; Glendale, Arizona



    Publication date :

    2025-06-05




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    San Joaquin valley

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