City Of Greeley

Traffic Signals

If you notice a traffic signal malfunctioning, or wish to have us evaluate the timing or placement of traffic signals, please contact us:
  • Phone:  Monday through Friday 7:00am - 4:00 p.m. at (970)350-9355

If this is an emergency situation please contact 911.


The City of Greeley Transportation Services maintains and manages approximately 100 traffic signals and 60 school flashers within the City of Greeley. Maintaining the system takes more than simply turning the lights from red, yellow, and green. We must balance the needs of all who depend and use the traffic signal system. This includes motorists, pedestrians, bicyclists, and transit riders, along with emergency vehicles.

Did You Know ?

  • Driving the speed limit is the most effective way to reduce time spent at traffic lights. The signals are programmed to work best when the speed limit is met.
  • Stop behind the stop bar at red lights. Most intersections in Greeley have vehicle detectors in the pavement that detect the vehicle's presence.
  • When walking do not enter the pedestrian crosswalk when the 'Walk' light is flashing
  • Yellow means 'slow' down - not 'speed' up
  • Treat a flashing red light as a stop sign.
  • Pedestrians 'SHOULD' have the right-of-way.