Five people suffered critical injuries after a double-decker tour bus lost control in traffic near Union Square on Friday afternoon, striking several vehicles and knocking over nearby construction scaffolding, witnesses said.
The red tour bus, operated by City Sightseeing, was traveling east on Post Street around 3 p.m. when it “lost control,” according to a man working with the the Union Square Business Improvement District, who declined to give his name.
The bus struck several cars, a bicyclist and trucks in traffic before veering to the left, where it struck scaffolding on the construction site of the new Union Square Apple store.
Fire officials confirmed 19 victims were injured in the crash.
Alif Borou of Oakland, driving a black Toyota Prius for Uber in traffic ahead of the bus, said he did not hear or see anything unusual until he saw, to his left, the construction scaffolding “coming down.”
SFMTA reported that the Powell Streeet cable car line is down because of the crash.
A bicyclist was also struck by the bus, according to scanner traffic.
Law enforcement has responded to the scene, more details will be reported as they become available.
A debate about tour bus safety was spurred two years ago, after an open-air double-decker tour bus veered off course in the Richmond district in July 2013. The bus struck a low-hanging wire on 12th Avenue and the crash sent five to the hospital.
The Associated Press contributed to this report.