Traffic Signals Must be warranted (must meet criteria) before being installed. Are intended to assign hierarchy of one street over another. Are not intended to slow traffic.

Contact Office of Transportation Engineering Phone: (301) 600-1687 Email

To view the warrants necessary to justify a traffic signal please review Chapter 4 of the Manual on Uniform Traffic Control Devices.

All major subdivisions and commercial projects must undergo studies to determine if roadway improvements (and other concerns) need to be mitigated. All large projects and all projects in already-congested areas will be screened to see if traffic signals are necessary.