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 official name of Transit Express is rarely, if ever, used. The system is operated by the Utah Transit Authority (UTA). All TRAX trains are electric, receiving power from overhead wires. TRAX has 50 stations on three lines. The Blue Line provides service from Downtown Salt Lake City to Draper. The Red Line provides service from the University of Utah to the Daybreak Community of South Jordan. The Green Line provides service from Salt Lake City International Airport to West Valley City. In , the system had a ridership of , or about per weekday as of . Operations Service characteristics TRAX operates seven days a week, with the exception of some holidays. It operates Monday through Friday from approximately 4:30 am to 11:30 pm with a fifteen-minute headway on each line during the entirety of operating hours. It operates weekends from approximately 5:00 am to nearly midnight with a thirty-minute headway. Lines and stations Rolling stock 117 active railcars 23 Siemens SD-100 LRVs (1001–1023) built 1998 17 Siemens SD-160 LRVs (1024–1040) built 2001–2003 77 Siemens S70 LRVs (1101–1177) built 2010–2012 29 UTDC LRVs (1041-1069) were purchased second-hand from the Santa Clara VTA in 2004 and refurbished for service on TRAX. These were withdrawn from service in 2018. To handle the increased crowds during the 2002 Winter Olympics, 29 Kinki Sharyo LRVs were borrowed from the Dallas Area Rapid Transit (DART) between 2001 and 2003. Varying based on projected ridership, the Blue Line typically operates 3-4 car trains, the Green Line 2-3 car trains, and the Red Line 2-4 car trains. History The first line, running from downtown Salt Lake City south to Sandy, was completed in 1999. The second line from downtown to the University of Utah was completed in 2001 and extended in 2003. An extension to the Salt Lake City Intermodal Hub was completed in April 2008. In August 2011, two extensions to South Jordan and West Valley City were completed. With the opening of these two extensions in 2011, the TRAX lines were renamed as colors instead of destinations, with the Blue Line running from the Salt Lake City Intermodal Hub to Sandy, the Red Line running from the University of Utah Medical Center to the