Why is it important for all wheels to remain in contact with the ground?

Maintaining stability while moving or positioning is crucial for the safe operation of vehicles, particularly those with booms or scissors, which can be top-heavy and prone to tipping. When all wheels are in contact with the ground, the distribution of weight is more balanced, reducing the risk of the vehicle becoming unstable or overturning. This stability is essential when maneuvering on uneven terrain or during lifting operations, as it ensures control and safety for both the operator and any loads being handled.

Ensuring all wheels have ground contact also helps with traction and braking effectiveness, which further contributes to overall stability. In scenarios where one or more wheels lose contact with the ground, the vehicle can easily tip over, leading to accidents or equipment damage. Thus, keeping all wheels on the ground is paramount for operational safety and efficiency.