The Utah Transit Authority's TRAX light rail system continues to serve as a primary transit artery for the Salt Lake Valley, providing electrified connections between shopping centers, schools, universities, and major transportation hubs across 42.5 miles of track.
Three Lines Connecting the Valley
As of July 11, 2026, the TRAX network operates three distinct lines designed to link diverse community destinations. The Blue Line facilitates travel from Draper to Salt Lake City, while the Red Line connects South Jordan to the University of Utah. Completing the system, the Green Line provides essential transit between West Valley and the Salt Lake International Airport.
System Scale and Frequency
The system's infrastructure consists of 50 total stations distributed throughout the region. These stations allow riders to access FrontRunner stations, bus hubs, and various Park & Ride lots. The light rail operates seven days per week, maintaining a frequency of 15 minutes during peak service hours.
Electric Power and Train Configuration
Technologically, TRAX utilizes an electric power system where a pantograph connects each train to overhead catenary wires. The composition of the trains is dynamic, with lengths ranging from one to four cars. This variation in train size is adjusted based on the specific time of day and projected ridership levels.
Fare Collection and Payment Methods
To ensure proper transit operations, UTA requires that all fares be purchased prior to boarding. Passengers may obtain fares at on-platform ticket vending machines or via UTA customer service locations. The system also supports modern electronic payment methods, allowing riders to use FAREPAY cards or other electronic forms of payment by tapping a card reader both before boarding and after exiting the train.
Historical Origins of TRAX
The history of the light rail system dates back to December 4, 1999, when the first segment of TRAX officially opened. That initial launch provided a connection for riders traveling between Salt Lake City and Sandy.
Current Transit Role
Today, the expanded network serves as a critical component of the Salt Lake Valley's transit infrastructure, linking residential areas with major economic and educational centers.
