[10] 117 active railcars 29 UTDC LRVs (1041–1069) were purchased second-hand from the Santa Clara VTA in 2004 and refurbished for service on TRAX.

[citation needed] 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.

[17] A letter of intent signed with the Federal Transit Administration on September 24, 2007, secured the remaining funding for the light rail lines.

[19] Ridership for the fourth quarter of 2012 was reported to be at 60,600, making it the ninth-busiest light rail system in the United States.

[A 1] Light rail in the Salt Lake Valley was first seriously discussed in the late 1980s to provide an alternative to traffic congestion on I-15, but the idea was met with criticism.

On October 10, 1988, Congress approved $5 million in funds to preserve land along the proposed light rail corridor.

Public opinion remained divided and businesses on Main Street in downtown Salt Lake City suffered during the construction period.

The system was enthusiastically embraced by valley residents, to the surprise of many, and once-skeptical communities soon began clamoring for extensions.

Funding for the University Line to Rice-Eccles Stadium allowed it to be completed in 2001 with four new stations, ahead of schedule and the Olympics.

An extension to the University Medical Center that added three new stations was completed on September 29, 2003, fifteen months ahead of schedule.

[22] On February 23, 2006, plans for extending the main line westward to the current Salt Lake City Intermodal Hub near the Gateway were approved.

The Jordan River building was originally an old warehouse for ZCMI, which had recently ceased operations and was renovated into a rail service center in 1999.

The Midvale Center was similarly repurposed from a former warehouse around the time of the Red and Green lines opening in 2011, it was also built to handle UTA's brand new Siemens S70 LRV's.

[24] An additional infill station, 600 South Main Street in Salt Lake City, along all three lines, opened on July 26, 2022.

[28] A letter of intent signed with the Federal Transit Administration on September 24, 2007, secured the remaining $500 million in funding for the light rail lines.

Since these lines were opened for service years earlier than originally planned, the anticipated growth on the west side of Salt Lake Valley has just not happened, yet.

[29] A line from Salt Lake City International Airport to the University of Utah was in the original plans for the system to be completed before the 2002 Winter Olympics, but funding shortages only allowed the eastern portion to be constructed.

A series of community meetings were held in Sugar House as part of a larger transit study undertaken by UTA.

[38] On October 20, 2010, the S Line (known then as Sugar House Streetcar) received a $26 million federal grant that allowed the street car to be completed in less than two years.

[39] It used an existing rail line running along 2200 South from the Central Pointe TRAX station to approximately 1100 East, near the primary Sugar House shopping district.

[40][41] In 2023, UTA published its Light Rail Strategic Plan, which highlighted plans by the agency to build new tracks along both 400 South and 400 West in Downtown Salt Lake City, connecting to the existing TRAX network at Ballpark to the south, Courthouse to the east, and either Salt Lake Central or Planetarium to the west.

UTA proposes that these expansions be completed prior to Salt Lake City's hosting of the 2034 Winter Olympics.