Federal and state policy makers increasingly emphasize the need to reduce highway crash rates. This emphasis is demonstrated in Iowa's recently released draft Iowa Strategic Highway Safety Plan and by the U.S. Department of Transportation's placement of "improved transportation safety" at the top of its list of strategic goals. Thus, finding improved methods to enhance highway safety has become a top priority at highway agencies.
Single-vehicle run-off-road crashes are the most common crash type on rural two-lane Iowa roads. Rumble strips have been proven effective in mitigatin...
Objectives• Determine if rumble stripes can be used as a strategy to combat roadway departures and reduce the number of run-off-road (ROR) crashes.â...
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United States Department of Transportation
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