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- W429953528 abstract "New York State Department of Transportation's (NYSDOT's) Skid Accident Reduction Program (SKARP) identifies sections of pavement experiencing unusually high proportions of wet road accidents, friction tests them, and treats those sections which are experiencing both high wet road crashes and low friction numbers. The treatment generally involves a 1 and 1/2 resurfacing, or a 1/2 microsurfacing, using non-carbonate aggregates (costing $20,000 per lane mile). Forty (40) locations treated under the Program have been evaluated. Based on the size and consistency of the differences in crash experience and friction numbers during each year before and following resurfacing at identified high wet road crash sites, it is concluded that the Program selection and treatment strategies are appropriate and effective. Percentages of wet road crashes (compared with total crashes) have remained consistently high during years before treatment, and consistently low following treatment. Particularly noteworthy, is that the percentages remained high during the before period even during years when the identified high wet road crash sites did not appear on the annual high wet road crash listing (suggesting a minimal effect of regression to the mean at identified high crash sites experiencing low friction numbers). Before and After accident analyses have shown that each year more than 740 annually recurring accidents are being reduced as a consequence of treatments undertaken at 40 sites between 1995 and 1997 on Long Island alone. Five hundred and forty (540) of those crashes were wet road crashes. Some simple empirically based tests for regression to the mean were undertaken (in addition to the above). A one year before/after study was performed for 20 of the test locations which did not appear on the wet road crash listing during the one year before period. Results from that evaluation, the general consistency of percentages of wet road crashes in the before period, and previous empirically based findings regarding the effect of regression to the mean at untreated high accident sites, suggest crash modification factors for the SKARP program as follows: total crashes should be expected to decline by 20%, wet road crashes should be expected to decline by 60%, and severe (Fatal and injury) wet road crashes should be expected to decline by 70%. All but one of the 40 sites treated in this study involve intersections. Improving pavement friction at intersections experiencing high wet road crashes and low friction numbers, presents a relatively low cost improvement which should be expected to produce large crash reductions - particularly as regards severe (fatal and injury) crashes." @default.
- W429953528 created "2016-06-24" @default.
- W429953528 creator A5008398109 @default.
- W429953528 date "2003-03-01" @default.
- W429953528 modified "2023-09-27" @default.
- W429953528 title "SKID ACCIDENT REDUCTION PROGRAM (SKARP): TARGETED CRASH REDUCTIONS" @default.
- W429953528 hasPublicationYear "2003" @default.
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