Control of Tractors on Sloping Ground,
SCOTTISH INST OF AGRICULTURAL ENGINEERING PENICUIK
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Tractor and agricultural accidents on slopes fall into two categories. The most well known is a stability loss accident in which the tractor simply overturns. Much more common is the sliding control loss accident, frequently termed a runaway by farmers. The runaway description is apt because this is exactly how it appears to the driver - an uncontrolled speed build up when descending a slope. The accident occurs when the wheel-ground forces in the plane of the ground are no longer sufficient to maintain equilibrium on the slope. These accidents often lead to overturns of varying severity incidents have been reported of tractors travelling up to 1.5 km from the point of control loss before coming to rest.