Consultant Arup has put forward three proposals to make driving to the terminal easier:

Widening to three lanes the A4232 Ely Link from the M4 Junction 33 (Cardiff West) to Culverhouse Cross. Traffic would be diverted around Culverhouse on a new bypass then join the A4050, the current airport link. The road would be improved in parts with new stretches;

Improving the A4232 from J33 to Culverhouse Cross. Vehicles would be taken off before Culverhouse onto a new bypass link to the A48 Tumble Hill. Traffic would travel to Sycamore Cross then join the A4226 Five Mile Lane through the Vale of Glamorgan. The existing road would be improved in parts with new stretches built allowing speed limits to be increased;

Taking traffic off the M4 at Junction 34 (Miskin) down through Hensol and towards the A48 at Sycamore Cross and onto Five Mile Lane. It would again be improved with new, straighter stretches.

The airport’s director of commercial and business development Steve Hodgetts said bosses favoured the third scheme.

The proposals were revealed at a roadshow organised by the Welsh Assembly Government and Arup.