Drivers will also face fines, bans and even jail for infringements such as driving without a seatbelt, using a hand-held mobile phone or overtaking across double white lines. The hi-tech DVD cameras, which have instant playback, will also be used to provide photographic evidence against those eating sandwiches or rolling-up cigarettes at the wheel.
These are now considered serious offences under new guidelines drawn up for prosecutors.
The development will massively increase the number of fines and prosecutions against normally law-abiding drivers for relatively minor offences. As well as being fined £60 and given three points on their licences, motorists now face two years in jail if their actions are considered to have been a factor in dangerous driving.
Virtually every police force in England, Wales and Scotland is now equipped with the new digital cameras. They were given Home Office approval in April but are quietly being rolled out nationwide. More than 100 have been sold. The manufacturers have said their order book is full until next April.