The M-Line Trolley (previously McKinney Avenue Trolley) is a heritage streetcar line in the Uptown neighborhood of Dallas, Texas. The trolley line, which has been in service since 1989, is notable for its use of restored historic streetcar vehicles, as opposed to modern replicas.
The "M-Line" name was officially adopted in 2002 following the route's expansion beyond McKinney Avenue,[7] but locals sometimes refer to it using its previous "McKinney Avenue Trolley" name. To avoid confusion with the Dallas Streetcar, a separate modern streetcar operating in northern Oak Cliff, M-Line vehicles are typically referred to as "trolleys" or "cars", not "streetcars".
The trolley is operated by the McKinney Avenue Transit Authority (MATA), a non-profit organization. The trolley is free to the public thanks to donations, as well as a joint operating subsidy from Dallas Area Rapid Transit (DART) and the Uptown Improvement District.