Powered Wheelbarrows: Standard, either gas or battery powered, can transport a load of bulk materials weighing 400 up to even 1,200 pounds (depending on model). Their large forward drive wheels and often smaller stabilizing rear caster wheels allow these barrows to traverse rough terrain and climb steep slopes, with the operator merely guiding the load via a throttle control mounted on the handle. Many models have multiple-speed forward and single-speed reverse gears, regenerative braking, and offer a power dumping option.