Speed limits on major arterial roads to be enforced in major policy shift . Motorists currently breaking 30 mph limit will face minimum fines of $ 100 . Campaigners said scheme was part of nationwide legislation to slow speeds . But the AA said the change was being driven more by ' dogma ' than safety . It fears change will make drivers focus on speedometers instead of road .
Speed limits on major arterial roads to be lowered in major policy shift . Motorists caught breaking 20mph limit will face minimum fines of £100 . Campaigners said scheme was part of nationwide attempt to slow traffic . But the AA said the change was being driven more by 'dogma ' than safety . It fears change will make drivers focus on speedometers instead of road .