12:30: The accident scene has been cleared and the M has returned to its regular route. SFPD and the MTA are investigating, no word yet on the condition of the cyclist.
11:20: The MTA has alerted us that at 10:33 this morning, the M Ocean View had an accident with a bicyclist at Randolph and Arch streets.
“The male bicyclist was transported to San Francisco General Hospital with injuries described by the San Francisco Fire Department as serious” said Muni spokesperson Judson True, in an email.
Regular service has been disrupted, and shuttle buses are running from St. Francis Circle to San Jose/Geneva (the terminal) in both directions.
Early reports say the bicyclist was traveling southbound (downhill) on Arch Street and struck the right side of the train as it headed inbound (westbound) on Randolph Street through the intersection. All four directions of this intersection are marked with stop signs, but it has not been reported yet if both the train and cyclist observed these stop.