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    Effectiveness of Sealed Shoulders and Audible Edge Lines in Western Australia

    Access Status
    Fulltext not available
    Authors
    Meuleners, Lynn
    Hendrie, Delia
    Lee, Andy
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Meuleners, L. and Hendrie, D. and Lee, A. 2011. Effectiveness of Sealed Shoulders and Audible Edge Lines in Western Australia. Traffic Injury Prevention. 12 (2): pp. 201-205.
    Source Title
    Traffic Injury Prevention
    DOI
    10.1080/15389588.2010.537001
    ISSN
    1538-9588
    School
    School of Public Health
    URI
    http://hdl.handle.net/20.500.11937/12363
    Collection
    • Curtin Research Publications
    Abstract

    Objective: Sealing of road shoulders and installation of audible edge lines (also known as rumble strips or audio tactile profiled edges) are common engineering road treatments, often implemented to prevent run-off-road crashes. This quasi-experimental study evaluated the effectiveness of installing sealed shoulders and/or audible edge lines on the Albany Highway in Western Australia during 2000–2004 relative to matched control sites. Methods: Reduction in crash frequency post-2004 and the economic benefits of applying these treatments to 13 sites were assessed. Results: The treatments were highly effective overall, significantly reducing all-severity crash rate by 58 percent and casualty crashes by 80 percent. The reduction in crash cost was estimated to be $51.9 million Australian dollars over the lifetime of the treated sites, with $51.4 million attributable to the decrease in casualty crashes. After accounting for treatment costs, the net cost savings to the community were estimated at $50.6 million. The benefit–cost ratio across all treatment sites was 40.3. Conclusions: The findings justified the implementation of these treatments on rural roads in terms of benefits for reduction in both crash rate and crash cost.

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