Tandem-drive definition
Tandem-drive rigid delivery vehicle means a long-wheel-base single-unit vehicle (in which the engine, driving compartment and load-carrying compartment, tank or tray are all mounted on the one chassis) having two rear axles each with its own differential through which the driving power is transmitted to the rear wheels, and excludes an articulated vehicle.
Tandem-drive means a pair of close-coupled driving axles.