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Abstract:The Missouri Department of Transportation (MoDOT) has implemented High Friction Surface Treatment (HFST) in various locations across the state to reduce roadway departure crashes by improving pavement friction. To prevent premature failure and to ensure that the HFST performs adequately throughout the design life, this study evaluates the pavement distress and condition before and after the application of HFST. Along with the pavement distress and condition data, this study also evaluates the crash data of the HFST sections. Although analysis of distress data showed higher distress in some sections, it was the reflection of underlying distress, not the ‘failure’ of HFST, as observed from the ARAN images. Statistical analysis of the safety data revealed that HFST is around 66% effective in reducing crashes in wet conditions. Based on the evaluation of pavement condition and safety analysis, this study also provides guidance on the selection of future locations for the application of HFST.
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