Muni Metro
Muni Metro is a light rail system serving San Francisco, California, United States. Operated by the San Francisco Municipal Railway (Muni), a part of the San Francisco Municipal Transportation Agency (SFMTA), Muni's light rail lines saw an average of 113,600 boardings per day as of the first quarter of 2026 and a total of 34,229,500 boardings in 2025, making it the fifth-busiest light rail system in the United States.