As standard on most vehicles with a Hydro-Tridem or Hydro-Pendul Tridem running gear, the front lifting axle can be an interesting option when driving on the road with an empty vehicle: less friction, and therefore less energy consumption and tyre wear. On double or triple-axle muck spreaders, the use of the first lifting axle when spreading automatically transfers more weight to the rear axle of the tractor, giving it more support and therefore a better traction. This option is operated from the in-cab control box.