Where should you chock the vehicle during operations?

Chocking a vehicle is a crucial safety procedure, particularly during loading and unloading operations, as it helps to prevent accidental movement. The correct approach is to place chocks at its weakest point. This is generally understood to be the wheels of the vehicle.

When a vehicle is loaded or in operation, the weight distribution can lead to shifts that might cause it to roll. By placing chocks at the weakest point, you effectively create a barrier that helps stabilize the vehicle against any potential shifts in weight or movement. This ensures that the vehicle remains in a secure position, safeguarding both the equipment and personnel involved in the operation.

Option A, placing chocks at the strongest point, is not practical because the strongest points are often more resistant to movement and do not need additional support, whereas the weakest points are more vulnerable. The center of mass (option C) can change depending on how the load is distributed, and it's not a fixed reference for securing the vehicle. Finally, placing chocks only at the back (option D) fails to address the risk of forward movement, as it is essential to secure both ends to ensure the vehicle does not roll in either direction.