The A4229 is a short A-road in south Glamorgan. It was presumably given its current number around 1980 with the construction of the M4. The road was originally part of the B4283 but has been heavily upgraded, with very little still on that road's route.
The A4229 starts at a roundabout on the A48 to the south of Pyle. There is a D2 section south to M4 J37, then the road remains dual as it heads west to the next roundabout where it meets the B4283 at the northern end of the South Cornelly bypass.
The road narrows here and, as S2, follows a continuous left-hand bend along the bypass, rejoining the old road at the next roundabout. We turn right and run between a wooded hill and a golf course. With the sea just visible in the distance we bear right and descend to the south. After a crossroads the old road into Nottage turns right and we continue to a roundabout on the A4106 where the road ends. That road continues ahead into Porthcawl.