A study of effectiveness of various shoulder rumble strips on highway safety.
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A study of effectiveness of various shoulder rumble strips on highway safety.

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  • Alternative Title:
    Study of effectiveness of various shoulder rumble strips on highway safety
  • Creators:
    Chen, Chung S.
  • Corporate Contributors:
    Virginia. Dept. of Transportation. Traffic Engineering Division
  • Subject/TRT Terms:
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Virginia
  • Corporate Publisher:
    Virginia. Dept. of Transportation
  • Abstract:
    The Run-off-the-Road(ROTR)type of accidenthas beena predominantfactor in highway

    fatalities nationwide. This situation has created a major concern and challenge for traffic

    management within transportation departments. Shoulderrumble strips are new traffic control

    devices for interstate and limited access roadway systems, which hold great potential for

    reducing ROTR accidents. Consequently,they have becomea critical and attractive subject for.

    highway safety improvements.

    Although shoulder rumble trips have been recognizedas an effective measure and have

    been widely tested by 35 state agencies and several countries, the rolled type rumble strip is

    found most often in the literature. The optimal design patterns among the available types and

    their effectiveness have not been quantitativelytested and confirmed. This paper reexamines

    different typical patterns using field tests, implementation surveys from agencies, and

    mathematical analysis. A model has been developed to determine the optimal patterns. The

    results reveal that a milled pattern is superior to a rolled pattern for asphalt shoulders in terms

    of audibilityand tactility effectiveness,quality controland ease of construction. The corrugated

    pattern is practical for concrete shoulders. E\:'idenceis presented that existing implementation

    of policy and design criteria for rolled rumble strips shouldbe modifiedand that more research

    is needed to determine the degree of effectiveness.

    This study was sponsoredby the Traffic EngineeringDivisionat the VirginiaDepartment

    of Transportation (VDOT).

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