Five People, Including Children Seriously Injured After Bus And Car Collide

Five people, including children, were seriously injured after a bus and car collided in Sydney's southwest, leaving a teenage girl trapped in the backseat of her family car for close to an hour.

Emergency services were called to the scene at Memorial Avenue in Liverpool at around 11.15am on Saturday morning.

The male driver of the car, 58, and his female passenger, in her 60s, were both injured in the crash.

Emergency services worked for close to an hour to rescue a 13-year-old girl in the back seat of the car before she was rushed to hospital in a serious but stable condition.

The girl had suffered chest, pelvis and facial injuries.

The girls' mother, who was in the front passenger seat, also suffered a broken pelvis. She had to be sedated before she was airlifted to hospital, NSW Ambulance Inspector John Brotherhood said.

Two passengers on board the bus, a young boy and a 40-year-old woman were also seriously injured.

Image: Steve Hart

10 News First understands that police are now investigating whether one of the drivers involved in the crash ran a red light.

Witnesses said the scene in Sydney's southwest had been filled with people.

"There were people everywhere," Kerry Booth told 10 News First.

"It was horrible."

The crash prompted an urgent warning from authorities to drive to the conditions.

"Take your time and be careful," Brotherhood said.

It comes as the heavy rain which lashed Sydney on Saturday saw a number of other road accidents.

In Kogarah, in Sydney's south another bus and car collided injuring three people.

Two people from the bus and the driver of the car were all seriously injured.

Meanwhile, at Guildford in Sydney's west, a car slammed into two other parked cars trapping a 48-year-old pedestrian underneath.

The woman was taken to hospital with suspected spinal injuries.