HGVs carried 38 million tonnes of road freight within Wales, 25 million tonnes to Wales from the rest of the UK and 24 million tonnes from Wales to the rest of the UK.
Cludodd HGVs 38 miliwn o dunelli o nwyddau ar y ffyrdd yng Nghymru, 25 miliwn o dunelli i Gymru o weddill y DU, a 24 miliwn o dunelli o Gymru i weddill y DU.