August 2, 2017 7:10 pm 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. Local 3:01 “It's 100% different”: Community reflects on emergency curfew at National Harbor 2:25 Community, businesses mark first weekend of emergency curfew at National Harbor 1:27 Police search for suspect who vandalized Rockville synagogue sign 2:03 PNC Parkway Classic marks 40 years of racing in Virginia 5:01 Strawberry Season: Pick fruit at this Virginia festival