Alert: The following services will be unavailable on Saturday, January 5, 2013 from 12 a.m. (midnight) to 6 a.m. CST due to system maintenance.
Benefits of rumble strips
Rumble strips on the shoulders reduce run-off-the-road crashes by warning drivers they are leaving their lane. They are located at the edge of the shoulder and sometimes the white edge line is on the rumble, referred to as a rumble stripe, or just beyond the white line or the traveled portion of the roadway.
The National Cooperative Highway Research Program (NCHRP) Report 641 published in 2009 provides a great deal of information and data on the safety implications of rumble strips. The report provides crash reduction statistics on shoulder rumbles along urban/rural freeways, rural two-lane roads, and rural multilane divided highways (nonfreeways) and center line rumbles along rural two-lane roads and urban two-lane roads.
NCHRP Report 641 conducted before-after evaluations of shoulder rumble strips along freeways and expressways (multilane divided highways). According to this report, single-vehicle run-off-the-road (SVROR) crashes on urban/rural freeways were reduced by 18 percent and SVROR crashes on rural multilane divided highways were reduced by 22 percent.
Two-lane two-way highway performance
NCHRP Report 641 conducted before-after evaluations of shoulder and center line rumble strips along rural two-lane roads. According to this report, looking at single-vehicle run-off-the-road (SVROR) crashes on two-lane highways, shoulder rumbles reduce fatal and injury crashes by 29% and center line rumbles reduce head-on and sideswipe crashes by 44% and total crashes by 9%.
Questions about the content of this page:
Patrick Fleming, firstname.lastname@example.org
Last modified: July 3, 2012
All external hyperlinks are provided for your information and for the benefit of the general public. The Wisconsin Department of Transportation does not testify to, sponsor or endorse the accuracy of the information provided on externally linked pages. Some pages contain links to other documents and media types (PDF, Word, Flash, Video, etc.) and require free plugins to work. Visit our software information page for assistance.