The Metropolitan Atlanta Rapid Transit Authority is the principal public transport operator in the Atlanta metropolitan area. Formed in 1971 as strictly a bus system, MARTA operates a network of bus routes linked to a rapid transit system consisting of 48 miles (77 km) of rail track with 38 subway stations. MARTA's rapid transit system is the eighth-largest rapid transit system in the United States by ridership.

Fulton County is a county in the north-central portion of the U.S. state of Georgia. As of the 2020 United States census, the population was 1,066,710, making it the state's most populous county and its only one with over one million inhabitants. Its county seat and most populous city is Atlanta, the state capital. About 90% of the City of Atlanta is within Fulton County; the remaining portion is in DeKalb County. Fulton County is part of the Atlanta–Sandy Springs–Roswell, GA Metropolitan Statistical Area.