If you check your phone while driving, police and a family grieving the loss of a mother and three young children want you to see this.

It's the horrific moment a lorry smashes into a row of parked cars. A mother and three young children were killed in the crash. They were on their way back from a family holiday.

The lorry driver was changing the music on his mobile phone when he crashed.

Surrey Police released the footage in an attempt to stop drivers using their phones at the wheel.

Officers also recently made a lorry driver look at the footage after being caught using his phone behind the wheel, reports Get Surrey .

(Image: Thames Valley Police/PA) (Image: Thames Valley Police/PA)

Lorry driver Tomasz Kroker ploughed into stationary traffic in 2015 while using his mobile. Tracy Houghton, 45, and three children died. They were her sons Ethan, 13, and Joshua, 11 as well as her partner's daughter, Aimee Goldsmith, 11.

Josh and Ethan's dad, Doug, said they had been planning on playing Pokemon Go in Hyde Park when they got back from their holiday.

He said: "I thought that was the worst day of my life, my kids being killed. But I think it was three weeks later when I went to the funeral director's and actually saw them, dead, cold, in their coffins."

(Image: Thames Valley Police/PA)

(Image: Thames Valley Police/PA) (Image: Thames Valley Police/PA)

Aimee's dad, Mark, said the children "couldn't wait to get home" to play Pokemon and said they hugged and kissed before getting into the car.

In the clip, Aimee's mum, Kate, recalled in tears how the police had knocked on her door and told her her daughter had been killed in a car accident. She said her daughter wanted to be a vet.

She said: "I continue to see drivers using their phones. It sickens me.

"If they had seen the devastation they brought my family, or to other families, by using phones, illegally... distracting themselves from driving a potential weapon."

(Image: Thames Valley Police/PA) (Image: Thames Valley Police/PA)

(Image: Thames Valley Police/PA)

Kroker, 30, from Andover, Hampshire, was jailed for 10 years at Reading Crown Court after pleading guilty to four deaths by dangerous driving and a single count of causing serious injury by dangerous driving.

It was revealed he was scrolling music selections for almost 1km on the A34 near Newbury.

After his conviction, former Gloucestershire police chief constable Suzette Davenport said it was up to the public to make it socially unacceptable to use your mobile at the wheel.

Nationally, the number of mobile users who text, make calls and check social media accounts has risen and "distracted driving" is expected to be the biggest single cause of death and injuries on the roads.