Non-profit bringing friends, family, and commuters together in the heart of Uptown & Downtown Dallas. McKinney Avenue Transit Authority (MATA) operates the M-Line Trolley serving Uptown & Downtown Dallas To provide safe, clean, reliable, and enjoyable public transportation free of charge, 365 days a year. Service is provided to residents, businesses and visitors to the Uptown, Arts District, Downtown and Klyde Warren Park areas in Dallas while operating and maintaining the unique, historic ambiance and character of our vintage trolley system. Provide schools, businesses, associations and the general public access to our technical and historical links to Dallas' past.