A chain-reaction crash halted traffic Monday afternoon on a major freeway in the South Bay just as rush hour was starting.
The four-car pileup happened around 3:40 p.m. on eastbound state Route 54 near the Interstate 805 junction, according to the California Highway Patrol.
The crash closed all but one lane of traffic, causing a major back-up.
Several people were transported to a local hospital for various non-life-threatening injuries, the CHP said.
All lanes were reopened by 5 p.m.
The cause of the crash was under investigation, the CHP said.
