New speed cameras on roads near Port Talbot are catching 80 vehicles a day . In six months 4,500 motorists were caught , generating $ 450,000 in fines . The ' average speed ' cameras stop drivers from deliberately slowing down . Measured over a reasonable distance , drivers must continually check their speed .
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 .