Proven Safety Countermeasures - Enhanced Delineation and Friction for Horizontal Curves

United States. Federal Highway Administration. Office of Safety

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Proven Safety Countermeasures - Enhanced Delineation and Friction for Horizontal Curves

2011-11-01
By United States. Federal Highway Administration. Office of Safety

[PDF-286.83 KB]

English

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Corporate Creators:

United States. Federal Highway Administration. Office of Safety
Contributors:

Cheung, Joseph ; Julian, Frank

Cheung, Joseph ; Julian, Frank Less -
Subject/TRT Terms:

[+]

Countermeasures Friction Course Highway Curves Traffic Safety
Publication/ Report Number:

FHWA-SA-12-009
Resource Type:

Brief
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Highway Administration. Office of Safety
Abstract:

Low-cost safety treatments vary by the severity of the curvature and the operating speed. Low-cost treatments typically include methods for warning the driver in advance of the curve, but treatments will vary by intensity of the warning. Implementing the recently published curve treatments included in the Manual on Uniform Traffic Control Devices (MUTCD) should improve curve safety over past practices by providing consistency. However, additional enhancements can be made with post-mounted delineation in the curve or an enhanced signing treatment that may include larger chevron signs with enhanced retroreflectivity. For more challenging curves, dual indicated advanced signs with constant flashing beacons may be effective. Pavement markings are also an effective communication tool to indicate the alignment change. Pavement friction is critical for changing vehicle direction and ensuring the vehicle remains in its lane. Traditional friction courses or high friction surface treatments should be considered for curves with numerous wet weather crashes or severe curves with higher operating speeds.
Format:

PDF
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:043e0485e6a391b6c630b9bfe9331b4714da0487332926d84128cf9461c90606
Download URL:

https://rosap.ntl.bts.gov/view/dot/49434/dot_49434_DS1.pdf
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No Additional Files

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Proven Safety Countermeasures - Enhanced Delineation and Friction for Horizontal Curves

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