What type of surface increases the risk of a forklift rolling over?

An uneven surface significantly increases the risk of a forklift rolling over due to the instability it creates. Forklifts are designed to operate on flat, stable surfaces; when maneuvering over bumps, dips, or irregularities in the ground, the center of gravity can shift unpredictably. This shifting increases the likelihood of tipping, especially when turning or carrying a load. In contrast, smooth concrete, level asphalt, and indoor warehouse floors are typically designed to provide a stable, even surface, which helps maintain the forklift's balance and reduces the risk of rollover incidents. Therefore, operating on an uneven surface poses a much higher danger for forklift operators.