The M Ocean View is a hybrid light rail/streetcar line of the Muni Metro system in San Francisco, California. The line opened on October 6, 1925. Route description The line runs from Embarcadero station in the Financial District to Geneva Avenue and San Jose Avenue near City College of San Francisco in the Balboa Park neighborhood. The downtown portion of the line runs through the Market Street subway, which it shares with three other Muni Metro lines. It continues through the much older Twin Peaks Tunnel, emerging at West Portal Station. From there, it follows West Portal Avenue to the Saint Francis Circle, where it then takes its own right-of-way to 19th Avenue. The portion of the line on 19th Avenue between where it joins 19th near Eucalyptus Drive and Junipero Serra Boulevard is a right-of-way separated from the street. This section has two stations with high-platforms, one at the Stonestown Galleria on Winston Drive and the other at San Francisco State University on Holloway Avenue. It continues on 19th Avenue past Junipero Serra to Randolph Street. At the end of Randolph, the M uses Orizaba Avenue to get to Broad Street and takes that to San Jose Avenue. The rest of the line follows San Jose Avenue to Geneva Avenue, where the line loops around the Metro yard there on the corner opposite from Balboa Park Station. Operation The M Ocean View begins service at 5 a.m. on weekdays, 6 a.m. Saturdays and 8 a.m. Sundays, with the end of service occurring around 12:30 a.m. each night. Daytime headways are 10 to 12 minutes. Service on most of the route is provided by overnight Owl buses during the hours that rail service is not running. The serves the portion between Embarcadero and West Portal, and the serves the portion between West Portal and SF State. On weekends, the M Ocean View Bus service runs from 5 a.m. until the start of rail service. The bus line largely follows the rail line, but it uses surface streets to parallel sections where the rail line has dedicated rights-of-way. History The M Ocean View line began operation on October 6, 1925, as a shuttle service from St. Francis Circle to the wye at Broad and Plymouth in the city's Ocean View District. It was extended through the Twin Peaks Tunnel to the downtown Ferry Building on October 31, 1927, but reverted to