United States Department of Transportation
i
Study of KDOT Policy on Lane and Shoulder Minimum Width for Application of Centerline Rumble Strips : Technical Summary
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2012-08-01
[PDF-526.42 KB]
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Abstract:Roadway departure crashes correspond to approximately 40% of all traffic crashes. According to the most recent national crash statistics, in 2009, there were 11,185 fatal roadway departure crashes on rural highways, resulting in 23,169 fatalities. Thus, roadway departure crashes are a significant problem in the United States. Centerline rumble strips (CLRS) are raised or indented patterns installed mainly on two-lane undivided highways, utilized to alert drivers that they are crossing the center of the travel lane, by producing noise and vibration when crossed by vehicles’ tires. CLRS primarily address the problem of drowsy or inattentive drivers on two-lane, two-way highways drifting left out of their lane and striking an oncoming vehicle. It is estimated that 50–70 million adults in the United States have chronic sleep and wakefulness disorders. Understanding the disadvantages associated with the use of CLRS may result in reliable guidelines, which can increase the use of CLRS, contributing to saving lives.
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