Audible Lane Departure Warning for Seal Coat Surfaces

In an effort to reduce the number of single vehicle run-off-road and two-lane two-way crossover crashes Texas Department of Transportation (TxDOT) has implemented various audible lane departure warning systems on seal coat road surfaces. These audible lane departure warning systems are typically profiled pavement markings, but have recently included rumble bars. These countermeasures are typically used on seal coat road surfaces where milled rumble strips cannot be utilized or on roadways where shoulders are too narrow for milled rumble strips. These treatments are used on concrete and asphalt surfaces as well. Currently contractors and material producers are using slightly different designs to meet current specifications which may yield varying levels of performance. The research team will review different Spacing criteria and combinations of treatments. The effectiveness of these treatments from a cost/benefit, safety, increased wet-night visibility, sound level, and vibration level standpoint will also be evaluated.


  • English


  • Status: Completed
  • Funding: $256259
  • Contract Numbers:


  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Adams, Joe

  • Performing Organizations:

    Texas A&M Transportation Institute, College Station

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Principal Investigators:

    Pike, Adam

  • Start Date: 20150901
  • Expected Completion Date: 20170430
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01619654
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6888
  • Files: RiP, STATEDOT
  • Created Date: Dec 21 2016 3:26PM