Sinusoidal Rumble Strip Design Optimization Study

This Sinusoidal Rumble Strip Design Optimization Study presents results of sound level monitoring of four types of centerline rumble strips installed along Trunk Highway (TH) 18 in Mille Lacs and Aitken counties in Minnesota. This study is in response to objections raised by some landowners about the unwanted noise caused by vehicles traveling over rumble strips when they drift over the edge or centerline of the roadway. By changing and modifying the design, the ultimate goal is to provide the maximum safety by capturing the driver’s attention through in-vehicle generated sound levels while minimizing the associated external noise generated by the rumble strips. Tests on TH 18 were performed with three different vehicles – passenger car, pickup truck and a class 35 tandem dump truck. A single speed of 60 mph was used, as this was shown to provide the most meaningful data in the previous study. For each of the designs, an initial test was performed with vehicles traveling on normal pavement, followed by three passes on the rumble strip. Rumble strip designs 1 and 4 created lower exterior sound level increases but created interior levels similar to designs 2 and 3. The external results correspond to the depth of the rumble strip design, with designs 1 and 4 having a maximum depth of 1/8 inch less than designs 2 and 3. The interior sound level increases are similar for all four designs but vary by vehicle type. All of the designs created increases greater than 10 dBA for the passenger car, which is a desirable level for gaining attention of the driver. For the pickup truck, the interior sound level increases ranged from 4.5 to 6.8 dBA, while the increases for the dump truck ranged from 0.8 to 2.7 dBA.

  • Record URL:
  • Record URL:
  • Corporate Authors:

    Wenck Associates, Incorporated

    1800 Pioneer Creek Center
    Maple Plain, MN  United States  55359

    David Braslau Associates, Incorporated

    6603 Queen Avenue South, Suite N
    Richfield, MN  United States  55423

    Minnesota Department of Transportation

    Office of Traffic, Safety and Technology, 1500 W County Road B2, MS 725
    Roseville, MN  United States  55113

    Minnesota Department of Transportation

    Research Services and Library
    395 John Ireland Boulevard
    St Paul, MN  United States  55155
  • Authors:
    • Terhaar, Edward
    • Braslau, David
    • Fleming, Katie
  • Publication Date: 2016-6


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Glossary; Maps; Photos; References; Tables;
  • Pagination: 117p

Subject/Index Terms

Filing Info

  • Accession Number: 01608536
  • Record Type: Publication
  • Report/Paper Numbers: MN/RC 2016-23
  • Contract Numbers: (c) 06806
  • Created Date: Aug 9 2016 2:53PM