Rumble Strip Noise Evaluation Status: CompleteReport Date: 02/18/2015 Summary: In response to landowner complaints about noise from rumble strips, researchers analyzed the volume and tone of the sounds produced when vehicles drove over three different rumble strip designs. California's wave-shaped design produced less external noise than MnDOT's current design, and generated tones that are likely to be less abrupt in a rural environment, while producing an adequate amount of sound inside a vehicle to alert drivers. Final Deliverables: Report #2015-07 Technical Summary Related Materials: Roads & Bridges: Rural Road Safety Research in Minnesota - (News/Publication Article) Roads & Bridges: Rural Road Safety Research in Minnesota - (News/Publication Article) MnDOT looks for solution to noisy highway rumble strips - (Blog Post) Rumble Strips vs. Mumble Strips: Noise Comparison - (Blog Post) Rumble Strips: Noise Difference from Traditional vs. Sinusoidal Designs - (Video/Webinar) Future will be quieter for Minnesota rumble strips - (News/Publication Article) Future will be quieter for Minnesota rumble strips - (News/Publication Article) Minnesota: Are You Ready to Mumble? - (Blog Post) Audio files to accompany Report #2015-07 (.zip) - (Other) Rumble strips are compared to mumble strips - (News/Publication Article) Related Research: Sinusoidal Rumble Strip Design Optimization Study Sinusoidal Rumble Strip Design Optimization Study MPR-4(037)
