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Traffic Control Devices

Traffic control devices are signs, signals, markings and devices placed on, or adjacent to, a street or highway by a public body having authority to regulate, warn or guide traffic.

Traffic signals (sometimes called ‘traffic lights’ or ‘stop lights’) are installed at intersections and along roadways to direct people in cars, on bikes, and on foot to a specific action.

Denver Public Works maintains most signals along Denver roadways and operates the signal timing and communication systems. You can request traffic signal services by calling 311 or entering a request online at Please identify the specific location of the traffic signal request, including a specific corner if applicable (i.e. NE corner), and describe the specific problem (i.e. all lights out, red out, pedestrian signal out, need a signal, etc.). 

Traffic signs, usually installed along roadways or at intersections, provide users with information about the flow of traffic, such as a stop sign or a yield sign. Most signs are permanently installed and maintained for year-round use. Some construction-related traffic signs, usually orange, are set up temporarily around work areas.

All signs should be easily visible and free of obstructions from trees, buildings or other vehicles. To report a damaged or obstructed sign, contact 311.

Pavement markings guide users of the roadway system and control traffic flow. Common pavement markings within Denver include crosswalks, bicycle lanes, and stop bars. Pavement markings also separate lanes of vehicle traffic.


Informational signs

Street name signs are installed at intersections to improve wayfinding for residents and visitors. Some signs may also include directional information and block number. Most signs within the City and County of Denver are maintained by Denver Public Works. To report a damaged or missing sign, contact 311.

Driver feedback signs are interactive signs, usually using radar to display vehicle speed as motorists approach. These may be installed permanently or temporarily to increase driver awareness. Other interactive signs might notify road users of an upcoming road or lane closure.

Street lighting

Street lights or lamps along roadways are intended to improve safety and visibility. Depending on its location, a street light may be installed and maintained by Denver Public Works, CDOT, RTD, Xcel Energy, or private property owners. To report a problem with a street light, contact 311.


Safety Zones

Safety zones are designated as such using traffic signs, traffic control devices, or both, to indicate the start and end of the zone. Traffic fines double in safety zones.

yellow school zone traffic signSchool Zones

There are more than 180 school zones within Denver to provide a safe environment for school age children to walk and/or bike to and from their neighborhood school. Denver Public Works has posted warning signs, regulatory signs, and in some cases flashing beacons to alert drivers to the presence of school zones in accordance with local and national regulations. Zones located near higher volume arterials streets use flashing beacons to alert drivers of reduced speed limits.

Non-School Safety Zones

In areas where there is a higher volume of pedestrian traffic, additional special safety zones have been implemented to increase driver awareness. There are currently several safety zones adjacent to Denver parks including Eastmoor Park, Harvey Park, Platt Park, Sloan’s Lake Park, and Washington Park.