The correct answer to this open question is the following.
MARTA is the name of the public transportation system serving much of the Atlanta area and was inspired by the efforts of former city mayor William B. Hartsfield.
Atlanta, Georgia, is one of the largest urban areas in the United States. It is a busy and modern city that needs an efficient transportation system to help people move on a daily basis. MARTA stands for Metropolitan Atlanta Rapid Transit Authority. It began in 1971 as a bus transportation system and today it has grown to be the most important operator for public transportation in the area.