Rush-hour motorists faced traffic chaos on the Coventry Road on Monday night after ten cars collided in an underpass in freezing conditions.
The smash happened near the Swan Shopping Centre in Yardley at 5.10pm – blocking the carriageway heading towards Birmingham city centre.
A West Midlands Police spokesman said: “Thankfully, there were no serious injuries from the crash.
“It was believed to be due to flash freezing creating hazardous conditions.”
Ambulance Service medics treated two passengers for minor injuries – one with an injury to an arm and the other a child with a ‘very small cut’.