Traffic Signals Description/Schedule of Service You can request traffic signal services by calling the Mayor's Citywide Call Center at 311 or completing a service request online using the District government's Service Request Center. Identify the specific location of traffic signal (i.e. NE corner, SW corner, etc.) and describe the specific problem, (i.e. flashing, all-out, red out, pedestrian signal out, etc.). A service request will be put into the tracking system, and the resident will receive a service request number. Scheduled Response Time All signals out — 2 hours Twisted or turned head — 2 hours Red Bulb replacement — 24 hours Bulb replacement — 24 hours Pedestrian Signal Out — 24 hours School Flasher inoperative — 30 days Signal Timing Change — 30 days *Note: Requests for "new" traffic signals require an investigation determination, rulemaking and publication in the DC Register (if approved). Funding identification, design, and construction are also necessary. This entire process could take up to 24 months to complete. Further Action DDOT's standard is to investigate and respond to the reported traffic signal problem within the timeframes indicated. Call the Mayor's Hotline at (202) 727-2980 if problem hasn't been resolved by the specified time of completion.