In a bizarre chain-reaction collision Monday morning, a cyclist was struck by the driver of a minivan, who then slammed into a San Francisco Municipal Railway bus ferrying commuters through the Richmond District, which then hit four more cars.

At 8:10 a.m. Monday morning, SFMTA spokesman Paul Rose says that a cyclist riding on Balboa Street near Eighth Avenue in the Richmond District was struck by what appears from photographs of the collision to be a San Francisco Honda courtesy vehicle.

The minivan then hit a 31-Balboa Muni bus, Rose says.

According to KRON4, "the driver of a Honda vehicle appeared to have a medical emergency of some sort" and didn't stop at the stop sign at that intersection, hitting the cyclist from the rear.

The bus, KRON reports, swerved to avoid the minivan/bike crash "and instead hit four other cars."

According to the Richmond SF blog, which has a number of photos of the collisions, "the cyclist on the ground was conscious and asked for someone to call his wife."

Both the cyclist and the minivan driver were transported to San Francisco General Hospital with non-life-threatening injuries. No one in the cars struck by the bus were harmed, nor were any passengers of the bus.

The collision has disrupted service on the 31 line while the collision is investigated. Outbound buses are switching back at Sixth Avenue and inbound buses are switching back at Ninth Avenue, the transit agency announced via their Twitter account.

This is the second collision to involve a Muni vehicle this morning. At 5:01 a.m., a T-Third light rail vehicle struck a pedestrian at Third Street and Carroll Avenue in the Bayview, sending him to SF General with head and face injuries.


Photo of Monday morning's collision: Sent to SFist by tipster Zack Ruskin