A young woman pushing a pram along a row of shops on Sydney’s north shore is fighting for her life after a car left the road, hit a pole and flipped on its side.

The accident happened just before 8.30am on Chatswood’s busy Victoria Avenue, police said.

A witness told the Seven Network the woman was “collected” by the car and “just dropped, she wasn’t moving”.

The woman, 32, was taken to Royal North Shore hospital in a critical condition suffering head injuries.

The child was uninjured but was taken to a medical centre as a precautionary measure.

The 67-year-old male driver was treated at the scene for minor injuries and will undergo mandatory blood and urine testing.

The Nine Network reported that it was believed the driver suffered a medical episode.

A witness told Nine they heard a loud noise when the incident occurred.

“We were working in the kitchen and then, ‘boom!’ We quickly came out… There was a lady who was bleeding. Lots of blood. It’s very sad,” the witness said.

Police closed Victoria Avenue in both directions between Neridah and Archer streets.

Car flipped and Victoria Ave road closed outside Chatswood Chase. @Northshoretimes pic.twitter.com/oQp8GRsGsg

— Steve Hui (@iFLYflat) February 23, 2017