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Trinity Railway Express
The Trinity Railway Express (TRE) is a commuter rail service in the Dallas–Fort Worth metroplex, Texas, United States. It was established by an interlocal agreement between Dallas Area Rapid Transit (DART) and Trinity Metro. Each transit authority owns a 50% stake in the joint rail project and contractor Herzog Transit Services operates the line. The TRE began operating in December 1996.
In 2025, the system had a ridership of 1,337,600, or about 4,700 per weekday as of the fourth quarter of 2025, making it the seventeenth most-ridden commuter rail system in the United States.
Before 2006, the TRE was typically shown as a green line on DART maps and therefore was sometimes referred to as the "Green Line," but this was not an official designation. In 2006, DART chose green as the color for its new light rail route, the Green Line. Since 2006, the TRE has been shown as a dark blue line on DART maps.
Named after the Trinity River, the West Fork of which flows from Fort Worth to Dallas, the TRE was launched on December 30, 1996, shortly after the inaugural service of Dallas' DART rail system, operating from Dallas Union Transit Station to the South Irving Transit Station. It runs along a former Chicago, Rock Island & Pacific Railroad line that the cities of Dallas and Fort Worth purchased in 1983 for $34 million.
Service initially operated only in weekday rush hours, but midday and evening service was added in December 1997, and Saturday service was added in December 1998.
On September 18, 2000, the line was extended to the suburb of Richland Hills and, for the first time, there was rail service available between downtown Dallas and Dallas/Fort Worth International Airport. On November 13, 2000, the West Irving Transit Station also opened. On December 3, 2001, the TRE was extended to its current terminus at the T&P Station in downtown Fort Worth. On February 17, 2024, Richland Hills station was closed, being replaced by Trinity Lakes station, which opened on February 19, 2024.
TRE will lease one locomotive, three coach cars and two cab car from Northstar Line for the duration of the 2026 FIFA World Cup for increased service, after the Northstar Line shuts down permanently and is replaced with express busses in 2026.
The eastern terminus of the TRE route is Dallas Union Station on the west side of downtown Dallas. From there, the line runs northwest parallel to Interstate 35E, passing American Airlines Center and Dallas Market Center before turning west. The line crosses the Elm Fork of the Trinity River into Irving, passing through Irving's historic downtown district. The train continues west to the Dallas County/Tarrant County border, passing under the President George Bush Turnpike.
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Trinity Railway Express
The Trinity Railway Express (TRE) is a commuter rail service in the Dallas–Fort Worth metroplex, Texas, United States. It was established by an interlocal agreement between Dallas Area Rapid Transit (DART) and Trinity Metro. Each transit authority owns a 50% stake in the joint rail project and contractor Herzog Transit Services operates the line. The TRE began operating in December 1996.
In 2025, the system had a ridership of 1,337,600, or about 4,700 per weekday as of the fourth quarter of 2025, making it the seventeenth most-ridden commuter rail system in the United States.
Before 2006, the TRE was typically shown as a green line on DART maps and therefore was sometimes referred to as the "Green Line," but this was not an official designation. In 2006, DART chose green as the color for its new light rail route, the Green Line. Since 2006, the TRE has been shown as a dark blue line on DART maps.
Named after the Trinity River, the West Fork of which flows from Fort Worth to Dallas, the TRE was launched on December 30, 1996, shortly after the inaugural service of Dallas' DART rail system, operating from Dallas Union Transit Station to the South Irving Transit Station. It runs along a former Chicago, Rock Island & Pacific Railroad line that the cities of Dallas and Fort Worth purchased in 1983 for $34 million.
Service initially operated only in weekday rush hours, but midday and evening service was added in December 1997, and Saturday service was added in December 1998.
On September 18, 2000, the line was extended to the suburb of Richland Hills and, for the first time, there was rail service available between downtown Dallas and Dallas/Fort Worth International Airport. On November 13, 2000, the West Irving Transit Station also opened. On December 3, 2001, the TRE was extended to its current terminus at the T&P Station in downtown Fort Worth. On February 17, 2024, Richland Hills station was closed, being replaced by Trinity Lakes station, which opened on February 19, 2024.
TRE will lease one locomotive, three coach cars and two cab car from Northstar Line for the duration of the 2026 FIFA World Cup for increased service, after the Northstar Line shuts down permanently and is replaced with express busses in 2026.
The eastern terminus of the TRE route is Dallas Union Station on the west side of downtown Dallas. From there, the line runs northwest parallel to Interstate 35E, passing American Airlines Center and Dallas Market Center before turning west. The line crosses the Elm Fork of the Trinity River into Irving, passing through Irving's historic downtown district. The train continues west to the Dallas County/Tarrant County border, passing under the President George Bush Turnpike.