A trailer that is designed and constructed to be coupled to a tractor unit or to a converter dolly and to impose a substantial vertical load on the towing vehicle or on the converter dolly.
Leantóir atá deartha agus tógtha chun é a cheangal le haonad tarracóra nó dalaí tiontúcháin agus chun mórualach ceartingearach a leagan ar an bhfeithicil tarraingthe nó an dalaí tiontúcháin.