Active Force Control is a special pulling force measurement and regulation solution. The pulling force is measured directly on the wire rope and is electronically regulated. Thus, the pulling force does not depend on the wear of the clutch, temperature and humidity, the preload of the wire rope, and the amount of wound wire rope on the drum. Thus, the pulling force remains the same at all times, the pulling rope is thinner and consequently longer, and the tractor can be of lower power. A lighter wire rope helps to increase productivity and faster wood harvesting on the one hand and to reduce user fatigue on the other.