Two Muni vehicles sandwiched a car on Market Street on Friday afternoon, injuring nine people.
The crash was reported around 12:20 p.m. on Market Street near First Street and involved a white car that got smashed between a Muni bus and streetcar, San Francisco Fire Department spokeswoman Mindy Talmadge said.
Nine people suffered minor injuries but six declined transport to the hospital, Talmadge said.
San Francisco Municipal Transportation Agency spokesman Paul Rose said the two occupants of the car were taken to the hospital as a precaution, while a passenger in the streetcar was also hospitalized but walked into the ambulance.
Witnesses said the two people in the car were a woman and child.
Rose said the crash apparently occurred when the Muni streetcar was traveling east and rear-ended the car, which then got pushed forward into the bus.
He said the cause of the crash remains under investigation, but that the streetcar operator appears to have pulled the emergency brake on the vehicle just before striking the car.
The F-Market & Wharves streetcar line was blocked at the intersection and the 38-Geary and 71-Haight-Noriega lines were rerouted around the area until the scene was cleared at 1:44 p.m., Rose said.
He said the streetcar operator has been placed on non-driving status pending the investigation into the crash and will undergo alcohol and drug testing, as is standard Muni procedure.