Montgomery County Tests 'Smart' Traffic Signals - NBC4 Washington

    Montgomery County Tests 'Smart' Traffic Signals

    In the new year, several local communities will experiment with new "smart" signals that could help you speed up your commute. News4's Scott MacFarlane reports. (Published Friday, Dec 29, 2017) In the new year, several local communities will experiment with new "smart" signals that could help you speed up your commute. See More