Salt Lake City operates and maintains many of the traffic signals in Salt Lake City. These signals are timed in conjunction with State operated traffic signals on State-owned roadways in the city.
Report a broken or malfunctioning signal
Traffic signals in Salt Lake City are operated and maintained by multiple agencies. Traffic Operations Centers will respond to any report of traffic signal problems, regardless of what government agency owns the signal.
Salt Lake City Streets Division Signals Team | 801-535-2345
Our Streets Division signal technicians respond to malfunctioning signals within Salt Lake City 24/7 to ensure the safety of all modes of transportation. You can also report a signal using the City’s mobile app. Learn more about the Streets Division Signals Team below.
UDOT Traffic Operations Center | 801-887-3700
UDOT is responsible for the operations and maintenance of traffic signals on State-owned UDOT roadways. To report an urgent traffic signal malfunction or emergency, call the 24/7 hotline at 801-887-3700. You can also report UDOT traffic signal issues with the Click ‘N Fix app. Visit the UDOT Traffic Signals webpage to learn more.
Salt Lake City Traffic Control Center | 801-535-6530
The Salt Lake City Transportation Division is responsible for traffic signal timing, technology upgrades, and more. Salt Lake City Transportation signal technicians are available between 6 a.m. and 6 p.m. on weekdays. If we are not available, please leave a message and we will return your call as soon as possible.
Streets Division Signals Team
Salt Lake City’s Traffic Signals Program, part of the Streets Division, is responsible for maintaining and operating approximately 250 signalized intersections and crossings citywide. In addition, the team oversees more than 180 other signal devices—including 80 school zone flashers, 50 pedestrian-activated flashers, 50 driver feedback radar speed signs, and various illuminated signs. Each year, the program also handles over 2,200 utility marking requests (Bluestakes) to support safe excavation and construction.
Round-the-Clock Support
Our signal technicians are on call 24/7 to respond to dark or malfunctioning signals, ensuring the safety of everyone—drivers, pedestrians, cyclists, and transit riders. During regular business hours, technicians aim to respond to trouble calls within 30 minutes, with an average response time of just 19.95 minutes since 2018. One technician is always on standby after hours on a rotating schedule.
Proactive Maintenance
Every signal in the city is inspected at least five times each year through our Preventative Maintenance Inspection (PMI) program. These inspections include:
- Malfunction monitor testing
- LED signal head replacements
- Aerial and cabinet inspections
- Traffic detection device checks
- Operational reviews
- Pedestrian signal inspections
This proactive approach helps extend the life of signal equipment and ensures reliable performance across the network.
Signal Timing Efforts in Salt Lake City
Several years ago, a consultant was hired to evaluate the City’s traffic signal timing software and philosophy, and make improvements to the timing of the City’s traffic signals. The project goals were to determine how to immediately reduce traffic delays, fuel consumption, and greenhouse gas emissions and, over the long term, determine how to improve the capability and efficiency of the signal control system.
Key Findings
The updated traffic signal timing plan:
- Saves users 337,000 gallons of fuel a year
- Reduces traffic delays by 14% during the morning peak, 10% during midday, and 8% during the evening peak
The signal re-timing reduces:
- CO emissions by 50,700 pounds a year
- NOx emissions by 10,000 pounds a year
- VOC emissions by 13,200 pounds a year
While these efforts have had a positive impact on travel times and pollutant emissions, Salt Lake City’s traffic signal control staff strives to update the timing on a three-year basis. This is necessary because the efficiency of traffic signal timing plans degrade over time as traffic patterns evolve.
View the full signal timing report.
