Carmarthen is the market and administrative centre for a large farming county, and the dirt on its roads reflects that. Livestock lorries, milk tankers, feed and silage traffic converge on the town, and mud carried from fields and farm tracks onto the A40 and A48 is a seasonal problem, heaviest during harvest and in wet winters.
The A48 dual carriageway ends here, roughly fifteen miles west of the M4 at Pont Abraham, and meets the A40 running west towards St Clears and Pembrokeshire. Around the junction are the trade and retail estates at Pensarn and Johnstown, while new housing and a link road on the western side of the town, the hospital at Glangwili and the university campus have added construction work.
Coverage in Carmarthen and the Tywi valley
Johnstown, Pensarn, Llangunnor, Abergwili and Cwmffrwd are covered with the town, and operators travel out to St Clears, Whitland, Kidwelly and Llandeilo. North towards Newcastle Emlyn and Lampeter the roads are slower and the distances add up, so rural jobs are best booked several days ahead and for a full shift where possible.