What role do chocks serve in securing a vehicle carrying hazardous materials?

Chocks are used primarily to stabilize a vehicle, particularly when it is parked on an incline or on an unstable surface. In the context of vehicles carrying hazardous materials, stabilization is critical to prevent any unintended movement that could result in spills or accidents. By securely holding the vehicle in place, chocks reduce the risk of shifting that may occur due to wind, uneven ground, or any handling during loading or unloading operations. This function is vital for maintaining safety standards, ensuring that hazardous materials are contained and preventing potential environmental hazards or dangers to personnel.

While the other options might seem relevant in various contexts, they do not specifically address the primary safety function that chocks serve in relation to vehicles transporting hazardous materials.