A combination of 3 equally spaced axles attached to a vehicle by a suspension system designed to distribute equally, at about 1,000 kg and at all times, the mass that can be measured under the wheels of each axle and consisting of 3 identical suspensions attached together. A group of axles is the equivalent of a tridem

Axle definition, the pin, bar, shaft, or the like, on which or by means of which a wheel or pair of wheels rotates. See more.

Definition of an Apportionable Vehicles Article II of the Plan Any Power Unit that is used or intended for use ... APPORTIONABLE VEHICLE APPORTIONABLE VEHICLE (i) has two axles and a gross vehicle weight or registered gross vehicle weight in excess of 26,000 lbs (11,793.401) 3 APPORTIONABLE VEHICLE or (ii) has three or more axles, regardless of ...

Definition of axle. 1 a : a pin or shaft on or with which a wheel or pair of wheels revolves. b (1) : a fixed bar or beam with bearings at its ends on which wheels (as of a cart) revolve. (2) : the spindle of such a beam. 2 archaic : axis.

n. 1. the pin or shaft on which or by means of which a wheel or pair of wheels rotates. 2. the spindle at either end of an axletree. 3. an axletree. [before 900; Old English eaxl shoulder, crossbeam, c. Old Saxon ahsla, Old High German ahsala, Old Norse ǫxl shoulder]