The M4 is the principal motorway in the region that connects Cardiff with Swansea to the West and Newport and London to the east
Cardiff is served by three junctions of the M4, plus A48(M), which leads onto the M4
The A470 is another major road within the city that provides an important link to the north with the Heads of the Valleys road, mid and north Wales
The A4232 (also known as the Peripheral Distributor Road or PDR) forms part of the Cardiff ring-road system alongwith the M4 motorway between junctions 30 and 33.