Shocking dash-cam footage shows the moment a double decker ploughed into a car after an impatient driver pulled out into a bus lane while queuing in busy traffic.

Three people had a lucky escape after the bus smashed into the dark-coloured BMW, which then careered into three other cars in Small Heath, Birmingham.

Emergency services were called to the busy dual carriageway following the collision at around 3.40pm on Wednesday (13/3).

A woman, a teenage girl and a boy were treated at the scene by paramedics but incredibly avoided serious injury. There were no other reports of anyone being hurt.

Heart-stopping video showing the bus crash has been viewed thousands of times after being obtained by the Birmz Is Grime blog.

Web users questioned who was in the wrong - with many pointing the blame at the BMW driver but others saying the bus appeared to be going too fast.

One social media user said: "Cars fault 100%, he shouldn't have pulled into that lane. But why was the bus going that speed in the 1st place?"

Another said: "Even tho it looks like the bus was going fast, it was the car drivers fault of going into the bus lane - correct?"

A third wrote: "Ok so a car was in the bus lane… big deal. How did the bus driver not see the car??!! Plus the bus was going way too fast."

Another put: "How is the bus moving like there is no car in the lane? Even if it's in his lane, u don't just smash the car out the way."

One added: "Beemer driver needs to check mirrors."

A West Midlands Ambulance Service spokesperson said: "We were called to reports of a multi-vehicle collision on Small Heath Highway at 3.40pm yesterday.

"An ambulance and paramedic officer were sent to the scene where, on arrival, crews discovered a bus and four cars had been involved in a collision.

"There were three patients: a woman, a female teenager and a male child.

"They were all assessed by ambulance staff but did not require hospital treatment and so were given self-care advice and discharged at the scene."

A West Midlands Police spokesperson confirmed officers were called but nobody was arrested or seriously injured.