"medium trucks" are heavier than light trucks but lighter than heavy trucks. in the united states, a truck is a medium truck if it weighs between 6,300 kg (13,000 lb) and 15,000 kg (33,000 lb). trucks that are used for local delivery and public service (dump trucks, garbage trucks) are normally around this size. medium trucks have usually two axles: one at front and one at rear. the rear wheels may be coupled (that is: two wheels hitched together) to enable heavier load, but they may also be single.