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- W438745968 abstract "Over 40,000 fatalities have occurred on the US roadway system every year since 1994 and Run-off-road crashes represent a third of these fatalities. This research study focused on run-off-road crashes in Wisconsin with the goal of evaluating the current clear zone policy. Considering tree-related crashes, majority of vehicles traveled more than 30 feet from the edge of the roadway before hitting a tree. The average offset of the trees was 37.4 feet. The median, 80th and 95th percentile offsets were 32, 47.5 and 77.5 feet respectively. For 60 mph design speeds, the average offset of the trees impacted was 38 feet while the tree offset was 50 feet for design speeds of 65 to 70 mph. Therefore, for speeds greater than 60 mph, the majority of vehicles are traveling distances greater than the current recommended clear zone values. Data suggest that the current clear zone policy and guidelines provide less clear space than is necessary to prevent fixed object hits in run-off-road crashes. It is recommended that the clear zone policy be re-evaluated, supported by additional data and roadway side-slope information." @default.
- W438745968 created "2016-06-24" @default.
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- W438745968 date "2009-01-01" @default.
- W438745968 modified "2023-09-27" @default.
- W438745968 title "Clear Zone Policy and Run-Off-Road Crashes" @default.
- W438745968 hasPublicationYear "2009" @default.
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