Tractors, cyclists and horses may be banned from certain A-roads because they slow down traffic under new proposals.

A proposal from Highways England has revealed that some dual carriageways in the country will be transformed into A-roads that are motorway-standard.

The proposal means that traffic lights and roundabouts will be removed from the A-roads in attempt to speed up traffic and improve safety.

Under the plans, the first new road to be given the classification will be the A14 between Cambridge and Huntingdon.

The £1.5billion, 21-mile road, will be renamed the A14(M) will be open to road users by the end of 2020.

Other A-roads could also be affected in the next decade, including part of the A303 in Wiltshire which will see part of the road put into a tunnel past Stonehenge.

Parts of the A1 and A66 may also come under the new proposal.

Jim O'Sullivan, chief executive of Highways England, told the Times: 'It is absolutely a safety thing for a high-speed road network.

“Segregation of vulnerable users from high-speed traffic is a sensible thing to do. The key thing is to provide an alternative."

The proposed new A14(M) will ban vehicles from making right turns. It will also see a new six-lane bypass installed to the south of Huntingdon.