The Addidrive system, featured on the 70Z truck-mounted concrete boom pump, is a front-drive system that provides more than 12,000 lbs. of traction force to the tractor steer axles, offering a 10x10 drive configuration. The system offers uphill traction and off-road driving while consuming less fuel and weighing 900 lbs. less than a traditional front-drive. In addition, the truck's turn radius is maintained and the unit doesn't require a spacer frame allowing cab height to remain the same. Putzmeister America Inc. 800-884-7210.