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FHWA Home / Safety / Intersection / Strategy E9. Provide Pavement Markings with Supplementary Messages

Strategy E9. Provide Pavement Markings with Supplementary Messages

NCHRP Report 500 / Volume 5: A Guide for Addressing Unsignalized Intersection Collisions

WHERE TO USE

Unsignalized intersections with patterns of rear-end, right-angle, or turning crashes related to lack of driver awareness of the presence of the intersection.

Two photographs of pavement markings, one advising drivers to merge in advance of a lane ending, the other warning of a STOP sign ahead.
Photos by: FHWA

DETAILS

Providing pavement markings with supplementary messages (such as "STOP AHEAD") can help alert drivers and thus enhance the ability of approaching drivers to be more aware of the presence of the intersection. These markings should follow the Manual on Uniform Traffic Control Devices.

KEY TO SUCCESS

Select a combination of marking techniques appropriate to conditions on particular unsignalized intersection approaches.

Another key is the ability and commitment of the highway agency to maintain the markings adequately.

ISSUES

Potential difficulties may be encountered in the winter, when these markings may not be as visible to the driver. The pavement markings may also have a lower coefficient of friction compared to the rest of the approach, especially during wet conditions.

TIME FRAME: Short

This strategy does not require a long development process and can typically be implemented in 3 months or less.

COSTS: Low

Costs to implement this strategy are nominal. An agency's maintenance costs may increase.

EFFECTIVENESS

TRIED: Limited studies have suggested that installing supplementary pavement messages may decrease overall crashes by 6% and right-angle crashes at urban locations by 30%.

COMPATIBILITY

This strategy can be used in conjunction with most other strategies for improving safety at unsignalized intersections.

SUPPLEMENTAL INFORMATION

Supplementary pavement markings should follow the MUTCD, which drivers should understand with no need for special public education campaigns.

For more details on this and other countermeasures: http://safety.transportation.org



For more information contact:

FHWA Office of Safety Design
E71, 1200 New Jersey Avenue SE
Washington, D.C. 20590
(202) 366-9064
http://safety.fhwa.dot.gov

FHWA Resource Center – Safety and Design Team
19900 Governor's Drive, Suite 301
Olympia Fields, IL 60461
(708) 283-3545
https://www.fhwa.dot.gov/resourcecenter

Logo for FHWA and logo for the FHWA Office of Safety, which reads 'Safe Roads for a Safer Future – Investment in roadway safety saves lives.'

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Page last modified on September 4, 2014.
Safe Roads for a Safer Future - Investment in roadway safety saves lives
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000