TRAX is a light rail system in the Salt Lake Valley of Utah, in the United States, serving Salt Lake City and many of its suburbs throughout Salt Lake County. The system's official name, Transit Express, is rarely, if ever, used. The system is operated by the Utah Transit Authority. All TRAX trains are electric, receiving power from overhead wires. TRAX has 51 stations on three lines. The Blue Line provides service from Downtown Salt Lake City to Draper. From Wikipedia