Safety Evaluation of Centerline Plus Shoulder Rumble Strips
FHWA Publication No.: FHWA-HRT-15-064 The objective of this study was to perform a rigorous before-after evaluation of the safety effectiveness, as measured by crash frequency, of shoulder and centerline rumble strips applied in combination on two-lane rural roads. The dual application of centerline rumble strips in combination with shoulder rumble strips is a recommended strategy […]