West Country Horses / Tools
Can I tow my horse trailer, or drive this horsebox?
Use the weights on the plates, not what the horse weighs. MAM (maximum authorised mass) is the most the vehicle or trailer can weigh when loaded; it's on the plate or in the handbook.
This checks licence weights only. Your vehicle, trailer and load also have to be roadworthy and within their own limits. If in doubt, check GOV.UK or ask DVLA.