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Monitoring Prevention of Single Vehicle Run-off-the-Road Accidents
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1996-06-01
[PDF-14.38 MB]
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Edition:Draft - September 1992 thru August 1995
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Abstract:The principal objective of this study was to monitor existing sections of rural, multi-lane, divided highway in Texas that have received shoulder treatments designed to mitigate single vehicle run-off-the-road (SVROR) accidents. The study evaluated SVROR accidents over an 8-year period, 1987-1994. Statistical analyses of the pre- and post-treatment accident data indicated that SVROR accidents do occur on certain highway control sections at a rate suggestive of a potential problem. Control sections can be evaluated for degree of SVROR problem potential by computing z scores for that particular highway control section and evaluating if the value exceeds 85 percent of the values of all other control sections over a period of several years.
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