Studies to determine the operational effects of shoulder and centerline rumble strips on two-lane undivided roadways.

Finley, Melisa D.; Funkhouser, Dillon S.; Brewer, Marcus A.; Texas Transportation Institute

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Studies to determine the operational effects of shoulder and centerline rumble strips on two-lane undivided roadways.

2009-08-01
By Finley, Melisa D. ; Funkhouser, Dillon S. ; Brewer, Marcus A.

[PDF-1.03 MB]

English

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Details:

Creators:

Finley, Melisa D. ; Funkhouser, Dillon S. ; Brewer, Marcus A.

Finley, Melisa D. ; Funkhouser, Dillon S. ; Brewer, Marcus A. Less -
Corporate Creators:

Texas Transportation Institute
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Roads--Shoulders Road Shoulders Rumble Strips Rumble Strips--Texas--Evaluation
Publication/ Report Number:

FHWA/TX-09/0-5577-1
Resource Type:

Tech Report
Geographical Coverage:

Texas
Edition:

Technical report; Sept. 2006-Aug. 2008
Corporate Publisher:

Texas Transportation Institute
Abstract:

This report describes the methodology and results of analyses performed to (1) evaluate the impact of

shoulder rumble strips (SRS) and centerline rumble strips (CRS) on the placement of vehicles in the travel

lane of two-lane, undivided roadways and (2) determine the minimum shoulder width required for drivers to

correct errant vehicle trajectories once alerted by passing over SRS. Field studies indicated that CRS on twolane,

undivided roadways with lane widths as narrow as 10 ft do not adversely impact the lateral placement

of the vehicle in the travel lane. In fact, at locations with smaller shoulder widths (1 to 2 ft) drivers

positioned the center of their vehicles closer to the center of the lane. Similar effects were found at locations

with both edgeline rumble strips (ERS) and CRS. The impact of SRS located within 7 to 9 inches of the

edgeline on the lateral placement of vehicles in the travel lane was less clear. However, it does appear that

SRS located near the edgeline may shift vehicle travel paths closer to the centerline. In contrast, SRS located

35 inches from the edgeline did not seem to impact the lateral placement of vehicles in the travel lane. In

addition, lateral offsets that position the center of 16-inch SRS in the middle of the shoulders at least 4-ft

wide should provide enough remaining shoulder width for the 85th percentile distracted driver to correct their

errant vehicle trajectory before leaving the paved roadway surface. Additional findings from all of the studies

and detailed recommendations are discussed in the report.
Format:

PDF
Funding:

0-5577
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:73f1ed3880a93ebfbea55998f472b385322f5aa959447ae48fc03ac7711d067f
Download URL:

https://rosap.ntl.bts.gov/view/dot/16763/dot_16763_DS1.pdf
File Type:

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Studies to determine the operational effects of shoulder and centerline rumble strips on two-lane undivided roadways.

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