MARTA, or the Metropolitan Atlanta Rapid Transit Authority, is the principal public transportation system in Atlanta, Georgia. It operates a network of buses and trains that connect various neighborhoods, business districts, and key locations throughout the city and surrounding areas. Established in 1971, MARTA aims to provide efficient and accessible transit options for residents and visitors. The MARTA system includes four rail lines and numerous bus routes, making it one of the largest transit systems in the southeastern United States. It plays a crucial role in reducing traffic congestion and promoting sustainable transportation, helping to improve air quality and enhance mobility in the region.