having more than two axles and at least half of the axles (two axles out of three in the case of a three axle vehicle and three axles out of five in the case of a five axle vehicle) designed to be driven simultaneously, irrespective of whether one powered axle can be disengaged;
tá níos mó ná dhá acastóir aici a bhfuil ar a laghad a leath (dhá acastóir as trí cinn i gcás feithicil a bhfuil trí acastóir aici agus trí acastóir as cúig cinn i gcás feithicil a bhfuil cúig acastóir aici) deartha lena thiomáint go comhuaineach, is cuma cé acu an féidir nó nach féidir acastóir tiomána amháin a dhíghreamú;