GOVERNMENT Shoulder Rumble Strips  Cut Specifications  Layout: Continuous vs. Skip  Traffic Protection  Offset from the Edgeline  Clean-Up Specifications  Depth and Width Tolerances  Fog Seal Centerline and Secondary Road Rumble Strips  Secondary Roads  Centerline Rumble Strips  Photos  Full Lane Rumble Strips Project Designs and Specifications  Retrofit vs. Resurfacing  Cost Control  Traffic Protection  Clean-Up Specifications  TRB Paper Bicycles and Rumble Strips  Bicycle-Friendly Policies  Bicycle-Friendly: Alaska Research and Publications  Trucks and Rumble Strips  Drift-Off: The Road Crashes  Gallup Poll on Drowsy Driving  Rumble Strip Effectiveness  Cost and Benefits Useful Links  State DOT Agencies About SPT  About SPT  Officers  SPT History Contractor Section Home		Officers President: H. Matt Johnson email: matt@surfpreptech.com Vice President: Shawn M. Gallagher email: shawn@trafcon.com Director of Marketing: J. Douglas Johnson email: jdouglasjohnson@ameritech.net