Almost three million motorists are now recording their journeys with on-board dash cams, according to a new RAC study.
And the survey carried out by the motoring organisation suggests millions more - 52% of those polled - are thinking about getting one.
One in four believe fitting a dash cam will make their driving better, while over two-thirds (69%) of those who have had an accident involving a dispute over who was responsible think having one would have been useful.
The RAC, meanwhile, is introducing a car insurance incentive for drivers that do decide to install a dash cam.
Lynn Hayzelden, head of retail at the RAC, says: "We have seen a surge in the number of dash cams purchased from racshop.co.uk in 2015 and, as the results suggest, this is a trend that shows no sign of slowing down.
"Not only do dash cams encourage safer driving and provide excellent protection against insurance fraud, they can also now save you money on your car insurance ."
She adds: "We've listened to what motorists want and are pleased to announce that we are now offering a £30 discount to our motor insurance customers who have one of our five RAC dash cams installed.
"We've also recently improved our offering by launching three brand new in-car dash cams in time for Christmas. The RAC 03, which incorporates built-in GPS - a world first for a rear view mirror dash cam - is joined by the RAC 04 and RAC 05.
"What's more, the RAC 04 features built-in GPS and an emergency button. This means that when pressed the current sector of recording becomes protected and will not be lost when the camera continues recording on a loop. The RAC 05 also uses built-in GPS to alert drivers when their vehicle approaches a speed or safety camera."
Copyright Press Association 2015