 Nelson lies one mile east of the A470 Abercynon roundabout, while the A472 trunk road bypasses the village.Bus services are provided by various companies and exist to the towns of Bargoed, Blackwood, Caerphilly, Merthyr Tydfil, Pontypridd, Treharris and Ystrad Mynach.The direct bus service to Cardiff was discontinued in 2009, with a change at Pontypridd now required.