Guidance for the Design and Application of Shoulder and Centerline Rumble Strips
This report provides guidance for the design and application of shoulder and centerline rumble strips as an effective crash reduction measure, while minimizing adverse effects for motorcyclists, bicyclists, and nearby residents. Using the results of previous studies and the research conducted under this project, safety effectiveness estimates were developed for shoulder rumble strips on rural freeways and rural two-lane roads and for centerline rumble strips on rural and urban two-lane roads.
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Section 2 Magnitude and Nature of Highway Safety Concerns
Section 3 Purpose Types and Dimensions
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ambient analysis approaches before-after bicyclists ble strips centerline rumble strips coefﬁcient Continumus Crash counts crash data crash frequency crash type cross-sectional divided highways drivers edgeline effectiveness of centerline effectiveness of shoulder Estimate heavy vehicles horizontal curves included length milled rumble strips Minnesota multilane undivided highways noise Non-edgeline nontreatment sites Number p-value passing zones Pennsylvania percent change indicates percent reduction reduction in SVROR roadway types rumble strip dimensions rumble strip patterns rumble strips installed rural freeways rural multilane divided rural two-lane roads safety effectiveness safety evaluation shoulder and centerline shoulder rumble strips shoulder width sideswipe significant at 90 signiﬁcant results sound level difference speciﬁcally standard error statistically signiﬁcant strips are installed SVROR crashes SVROR FI crashes Table tangent TOT crashes trafﬁc transportation agencies travel lane treatment sites undivided highways nonfreeways Urban freeways urban two-lane roads variables vibration videolog