If you're ever tempted to pick up your phone while driving. Don't.
Devastating footage has been released of a horrific crash that killed a mum and her three children by police in the hope it will deter others from making the same mistake.
The footage comes from within the cab of a lorry which ploughed into the bar of stationary cars on the motorway, while the driver looked at his phone while on the motorway.
The family who lost their lives were heading back home after a holiday, reports Get Surrey .
Lorry driver Tomasz Kroker had been changing the music on his phone when the crash took place in 2015, killing Tracy Houghton, 45, and her sons Ethan, 13, and Joshua, 11, as well as her partner's daughter, Aimee Goldsmith, 11.
Surrey Police released the distressing footage in a bid to stop drivers using their phones at the wheel.
Father of Josh and Ethan, Doug, said the two boys had been planning on playing Pokemon Go in Hyde Park upon their return.
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."
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 video 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.
"I continue to see drivers using their phones and it sickens me," she said.
"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...
"Would they be as sickened as we are?"
Kroker, 30, 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.
More recent west London news
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.
The lorry driver from Andover, Hampshire, pleaded guilty to four counts of causing death by dangerous driving.
