For those who have ever slowed down just for the speed camera then returned to a higher speed may have met their match.
A new camera installed on the M4 can spot you speeding at up to 1km distance away.
The new piece of kit doesn’t just record speed, it can produce ultra clear video footage and still photographs of vehicles and even the people inside them.
According to GloucestershireLive the technology is being rolled out on the M4 and M5 motorways plus other major roads in the Gloucester Police area.
Other forces around the country are looking into using the cameras aswell.