Final answer:
Tank vehicles are dangerous to drive due to load surge and high center of gravity.
Step-by-step explanation:
Tank vehicles are dangerous to drive due to both the danger of load surge and the high center of gravity. Load surge occurs when the liquid inside the tank moves suddenly, leading to instability and potentially causing the vehicle to tip over. Additionally, tank vehicles have a high center of gravity, which makes them more prone to tipping and losing balance even during normal driving conditions.