The powertrain delivers enough torque to the wheel to overcome stationary forces, resulting in the vehicle moving forwards or backwards.
This slow-speed agricultural and light freight vehicle was a tricycle with the front wheel carrying a large tractor tyre.
The wheel was powered by a small single cylinder Douglas engine carried on the front mono fork that formed the steering gear.
Four-wheel drive is common in off-road vehicles because powering all four wheels provides better control on loose and slippery surfaces.
Unlike four-wheel drive drivetrains, this configuration is only used in extreme off-road and military uses, in particular heavy haulage and missile carriers.
The Oshkosh M1074 and M1075 prime mover units in the U.S. Army's Palletized Load System (PLS), the U.S. Marine's 10x10 Oshkosh Logistic Vehicle System Replacement (LVSR), and the Tatra T816 10×10 cargo carrier are examples of ten-wheel drive vehicles.