What are two reasons driving tank vehicles requires special care?

Driving tank vehicles requires special care primarily due to their high center of gravity and the risk of surge. Tank vehicles are designed to carry liquids, and the contents can shift during movement, especially while accelerating, decelerating, or turning. This shifting can cause the vehicle to become unstable, increasing the risk of rollover due to the high center of gravity typical for tank vehicles. Additionally, the surge effect occurs when the liquid sloshes back and forth within the tank during maneuvers, which can dramatically affect the handling of the vehicle. Understanding these dynamics is crucial for maintaining control and ensuring safety while operating tank vehicles.