Centerline rumble strips on rural highways shown to cut crashes by half : research spotlight.
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2015-03-01
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By Datta, Tapan
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Abstract:In 2008, Michigan launched a major systemwide installation of both
centerline and shoulder rumble strips on 5,400 miles of its rural,
non-freeway highway system. This unprecedented initiative was
accomplished during a three-year period ending in 2010. A two-phase
evaluation study focused on the crash reduction benefits of centerline
rumble strips, which have not been studied as extensively as shoulder
rumble strips. The just-completed Phase 2 study included an analysis of
before-and-after crash data, a cost-benefit study, surveys of drivers and
MDOT personnel, and guidelines for local road agency implementation of
rumble strips.
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