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Research Reports

Performance Analysis of Centerline and Shoulder Rumble Strips Installed in Combination in Washington State

Description: WSDOT began installing rumble strips on undivided highways in 1999 as a countermeasure for roadway departure crashes. Installations on the shoulders were intended to reduce run-off-the-road crashes, while centerline rumble strips targeted reductions in cross-centerline crashes. A March 2011 report detailed the performance of centerline rumble strips on Washington State highways. This study:
• Examines the combined effects of centerline and shoulder rumble strips.
• Details the performance of rumble strips on undivided highways in Washington State under a variety of conditions.
• Explores various traffic volumes, geometric conditions, lane and shoulder widths, and driver contributing circumstances.
• Compares various installation scenarios with shoulder and centerline rumble strip installation at different times, as well as simultaneous installation.

  • Date Published: April, 2013
  • Publication Number: WA-RD 799.1
  • Last Modified: April 16, 2013
  • Authors: Mark Sujka, Brad Manchas, Dave Olson.
  • Originators: Washington (State). Dept. of Transportation. Development Division, Design Office
  • # of Pages: 114 p., 2.3 mb (PDF)
  • Subject: Rumble strips, Center lines, Road shoulders, Highways, Ran off road accidents, Head on collisions, Safety, Performance measurement, Accidents, Analysis.
  • Keywords: WSDOT, rumble strips, shoulder rumble strips, centerline rumble strips, crash rate, lane departure, run-off-the-road collision, crossover crash, contributing circumstances.
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This abstract was last modified May 23, 2013