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State Highway Administration

Automated Speed Enforcement (ASE)

The Maryland State Highway Administration (SHA) promotes a three-pronged approach to effectively managing speed related safety problems: Engineering, Education and Enforcement.

Automated Speed Enforcement (ASE) systems can be an effective tool for managing speed and reducing speed related crashes when used correctly and in the appropriate circumstances.Through an ASE program involving public education and visible enforcement, SHA seeks to change behavior and urge drivers to do what they already should be doing: driving responsibly, staying alert, and obeying the posted speed limit.

Maryland law, effective October 1, 2009, allows Automated Speed Enforcement in certain school zones and work zones.

  • General Information
    • Senate Bill 277 (PDF, 329kb)
    • General information on the new law
    • Former MDOT Secretary Porcari’s letter to the Editor in the Gazette newspaper
    • WJZ-TV Interview with Neil Pedersen
    • Vendor Equipment Showcase (PDF, 91kb)
  • School Zones
    • Guidelines for Automated Speed Enforcement (ASE) Systems in School Zones (PDF, 682kb)

These guidelines contain direction on site assessment, traffic control device requirements, equipment maintenance and calibration, public outreach, and site and program evaluation for Automated Speed Enforcement (ASE) Systems along SHA highways.The guidelines apply to both mobile and permanent ASE sites in school zones.Local jurisdictions are encouraged to adopt these guidelines to improve the consistency and credibility of ASE programs statewide.

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Maryland Department of Transportation


707 North Calvert Street Baltimore, Maryland 21202