booster axle definition
booster axle means an axle on a truck that is designed to transfer a portion of the truck weight to the steering axle, and that is located more than 8 feet and 1 inch from the nearest axle;
booster axle means a separate vehicle bolted or pinned to another vehicle that redistributes weight from one or more axles to other axles and pivots from side to side at the connection point or has wheels that steer during turning;