Authorities say it was lucky no one was killed during a car crash on a busy Sydney road when the vehicle ploughed through a median strip and speared into a bus stop, leaving a teen with serious leg injuries.

But what shocked onlookers even more was when the driver stumbled out of the wreck and allegedly ran away.

Emergency services were called to Longueville Rd at Lane Cove about 12.30pm on Saturday after reports a vehicle had crossed a median strip and smashed into the bus stop.

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A teenager waiting near the bus stop was hit by flying debris, leaving serious leg injuries. He was taken to hospital.

“He was actually bleeding out, quite a bit ... he managed to move out in time before the car actually came,” a witness said.

The car crashed into a bus stop Credit: 7NEWS

A teenager was injured. Credit: 7NEWS

Footage captured the driver rummaging for her phone after the crash before allegedly fleeing the scene.

“She reeked of alcohol. She came out, she was running left and right frantically, she went back in to grab her phone then ran down that street,” a witness claimed.

She allegedly then tried to get into another car, a grey BYD, that was parked on a nearby street.

Police then arrived and she was arrested.

Footage allegedly shows the woman grabbing a phone from her car. Credit: 7NEWS

She allegedly had an altercation with an onlooker. Credit: 7NEWS

Dashcam footage captured the car allegedly swerving in and out of traffic moments before the crash, with its bumper already hanging off.

“The white Audi, very fast, she tried to stop then she lost control so she hit the barrier,” a witness said.

“I went to her to help her and she was weird, she was a little bit aggressive She told me ‘I’m ok, I‘m ok’.”

Police allege the woman resisted arrest, tried to assault officers and refused to submit a breath test.

She was taken to the Royal North Short Hospital for assessment and mandatory testing.

Officers discovered her licence had been disqualified in May for five years and she has been charged with 11 offences including driving while being disqualified, negligent driving, common assault and refusal to submit a breath test.

She was refused bail and will front court on Sunday.