Drivers should be fined for going just 1mph over the speed limit, a group of MPs and peers will demand.
In a new report, set to be published tomorrow, the All Parliamentary Group for Cyling and Walking will call for tolerances in the enforcement of speeding to be removed.
Most police foces have a tolerance of 10 per cent plus 2mph above the limit before drivers face prosecution for speeding.
This means that motorists are likely to face action if they go at 24mph in a 20mph limit, or 35mph in a 30mph limit, for example.
But the APPG, made up of cross-party MPs and peers, will call for the tolerances to be removed as one of 10 recommendations in their report.