Eighty drivers a day are being snapped by a new speed camera on the M4 motorway , generating £450,000 worth of fines , it has emerged . The traffic camera is on a notoriously busy stretch of road and has already snapped 4,500 motorists in a two month period . Drivers had been used to slowing down for a fixed camera in the 50mph zone at Port Talbot , South Wales . The traffic camera is on a notoriously busy stretch of the M4 ( pictured ) near Port Talbot , South Wales . But since November last year , it has been replaced with an 'average speed ' check - meaning motorists have to drive more cautiously . Chris Hume , from GoSafe , the Wales Road Casualty Reduction Partnership , said he was 'disappointed ' by drivers speeding between junctions 40 and 41 of the motorway . He said : 'Excessive and inappropriate speed remains a factor in collisions , associated fatalities , serious injuries and , in this case , also contributes to the traffic congestion . 'On average day there are still 80 motorists showing a complete disregard for the speed limit and putting lives at risk . ' Drivers who are caught will either get three points on their licence with a £100 fine or the option of a speed awareness course for £85 . The new cameras measure the speed at which a vehicle is travelling by tracking it over a set distance . Using data from several locations , it can tell how fast a motorist is driving based on its average , rather than at a set moment .
New speed cameras on M4 near Port Talbot are catching 80 motorists a day . In two months 4,500 motorists were caught , generating £450,000 in fines . The 'average speed ' cameras stop drivers from deliberately slowing down . Measured over a set distance , drivers must continually check their speed .