Final answer:
Trucks with an oversize/overweight load must slow down significantly when turning or going around sharp curves.
Step-by-step explanation:
Trucks with an oversize/overweight load must slow down significantly when turning or going around sharp curves. This is because the additional weight and size of the load can affect the truck's stability and maneuverability.
When trucks go around curves, there is a centripetal force acting on the vehicle, trying to pull it towards the center of the curve. This force increases with the speed of the truck and the sharpness of the curve. If the truck is carrying a heavy load, it has more momentum and is less able to make sharp turns without losing control, hence the need to slow down significantly.