Trinity Railway Express

Trinity Railway Express
EMD F59PH at Dallas Union Station in November 2004
Overview
OwnerDallas Area Rapid Transit (50%)
Trinity Metro (50%)
LocaleDallas–Fort Worth metroplex
Termini
Stations10
Websitetrinityrailwayexpress.org
Service
TypeCommuter rail
Operator(s)Herzog Transit Services
Daily ridership4,400 (weekdays, Q1 2025)
Ridership1,265,500 (2024)
History
OpenedDecember 30, 1996 (1996-12-30)
Technical
Line length34 mi (55 km)
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
Route map
Trinity Railway Express highlighted in blue
Fort Worth T&P
Fort Worth Central
TEXRail
to DFW Airport
6th Street Junction
Dalwor Junction
Richland Hills
(closed 2024)
Trinity Lakes
Bell
CentrePort/DFW Airport (via )
West Irving
W.C. Junction
Downtown Irving/Heritage Crossing
E.C. Junction
Medical/Market Center
Victory
Dallas Union Station

All stations are accessible

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 2024, the system had a ridership of 1,265,500, or about 4,400 per weekday as of the first 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.