The Transportation Research Board’s (TRB) National Cooperative Research Program (NCHRP) issued the report, “Guidance for the Design and Application of Shoulder and Centerline Rumble Strips.”  The report provides guidance for the design and application of shoulder and centerline rumble strips as a crash reduction measure, while minimizing adverse effects for motorcyclists, bicyclists, and nearby residents.  The report is of special interest to engineers and safety practitioners with responsibility for roadway design.