Nelson is a ballast tractor whose job is to carry construction workers and the Pack to and from work sites. As the bearer of such weighty loads, he often feels overworked, but never complains.
Nelson is based on a Scammell Pioneer ballast tractor with a low loader trailer.
Nelson is black with cream lining, red alloy wheels and a front beam. He has his name painted on his front cab above his windows and has his number written on his cab doors in cream.