Purchase four-wheeled ATVs. They are more stable, and less prone to side overturns. In addition, more traction is provided, and one can straddle a row in certain crop operations. But, the overwhelming asset of the four-wheeler is its stability. The tricycle-style tractor has lost much of its popularity because of its lack of stability, resulting in many serious side overturns.
Rear overturns are another problem.
Heavier, four-wheeled ATVs with low center of gravities are the safest. A unique feature of the ATV is that operator position on the seat can significantly change the center of gravity. Moving forward will reduce the risk of rear overturns. Two general rules are to not carry more than one-thi d the vehicle's weight on the rear carryall and never tow a load heavier than the weight of the ATV plus the operator's weight. They can provide a smooth ride and good vehicle control at slow speeds on a smooth surface.