The purpose of guardrail is to reduce the potential for, and the severity of accidents involving vehicles that run off the road. The following parameters are useful in evaluating a location for the need of guardrail:

  • Distance from the roadway to the hazard
  • Embankment height and slope
  • Speed and volume of traffic
  • Horizontal and vertical alignment of the roadway
  • Accident history

To request a new Guardrail installation please contact us at [email protected]

For additional information concerning guardrail go to the  Federal Highway Administration.

To address any issues concerning damaged guardrail, please report the location to the Division of Highway Services.

For additional general information, please contact: 

Division of Traffic Engineering and Operations
Traffic Engineering Design and Operations Section
100 Edison Park Drive, 4th Floor
Gaithersburg, Maryland 20878

To email [email protected]

Telephone: 240-777-0311 
Fax: 240-777-2080