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Impact of Non-Freeway Rumble Strips

Impact of Non-Freeway Rumble Strips. Gregory C. Johnson, PE Chief Operations Officer Michigan Department of Transportation. Introduction. Michigan Department of Transportation Project Manager: Jill Morena, PE Wayne State University: Timothy J. Gates, PhD, PE Peter T. Savolainen, PhD, PE

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Impact of Non-Freeway Rumble Strips

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  1. Impact of Non-Freeway Rumble Strips Gregory C. Johnson, PE Chief Operations Officer Michigan Department of Transportation

  2. Introduction • Michigan Department of Transportation • Project Manager: Jill Morena, PE • Wayne State University: • Timothy J. Gates, PhD, PE • Peter T. Savolainen, PhD, PE • Tapan K. Datta, PhD, PE • Ryan G. Todd • Brendan J. Russo tjgates@wayne.edu

  3. Problem Statement • Reduce Lane-Departure Crashes • Rumble Strip Installation • 5,400 Miles of Non-Freeway • Centerlines • Shoulders • Evaluate Rumble Strip Installations and Provide Future Implementation Guidance

  4. Research Performed • Video of Driver Behavior • Encroachment • Centerline • Shoulder • Passing Maneuvers • Bicyclists • Vehicles • Surveyed Bicyclists about Rumble Strips

  5. Research Performed • Crash Data Analysis • Video Logs of Pavement Centerlines • Evaluate Pavement Cracking • Before and after Rumble Strip Installations • Roadside Noise

  6. Results • Safety • Improved Driver Performance • Pavement Performance • Do not Contribute to Short-Term Transverse Cracking in Asphalt Pavements • Noise • Deeper Rumbles Produce Higher Noise Levels • Noise Typically did not Exceed the Roadside Noise Level Produced by Tractor-Trailer

  7. Recommendations • Depth of 0.5 Inch at the Center and 0.375 Inch at the Outer Edges Reduces Noise • Installation on 6 Foot or Wider Shoulders Increases Bicyclist Perceived Safety • Report Available • @ • www.michigan.gov/mdotresearch

  8. Implementation Status and Strategy • Installing Rumble Strips • Follow Specification • Communicate Results • Research Spotlight • Three TRB Papers • Phase II Project • Quantify the Benefit • Develop Guidelines • Cities • Counties “We expect Phase 2 of this project to give transportation agencies in Michigan and other states the data they need to implement their own initiatives.” Jill Morena, PE Project Manager

  9. Value • Save Lives and Reduce Crashes Annually • 300 Crashes • 60 Incapacitating Injuries • 15 Lives • Improving the Quality of Life • Investment • Research $262,829 • Construction 3 years @ $2.7M /year • Total $8.3 Million

  10. Questions? Better.Faster.Cheaper.Safer.Smarter Customer Service is ImportantPlease take our customer survey:www.michigan.gov/mdot

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