DDOT to Retime Hundreds of Traffic Signals - NBC4 Washington

    DDOT to Retime Hundreds of Traffic Signals

    D.C. is tweaking the timing on hundreds of red lights to improve the flow of traffic. News4's Mark Segraves reports. (Published Wednesday, Aug 2, 2017) D.C. is tweaking the timing on hundreds of red lights to improve the flow of traffic. News4's Mark Segraves reports. See More