What is the recommended method to stabilize vehicles on their wheels?

The recommended method to stabilize vehicles on their wheels involves using cribbing or chocks in front and back of the wheels. This approach is comprehensive and ensures maximum stability by providing support to both ends of the vehicle, preventing it from rolling or shifting.

Wheel chocks are effective in securing the vehicle's position by blocking the wheels, particularly useful in preventing lateral movement. Cribbing under the chassis adds additional support and stability, particularly in cases where the vehicle might not be entirely on level ground or if there is a risk of it becoming unstable. Using both methods in conjunction can significantly enhance safety for responders working around the vehicle, ensuring that the vehicle remains secure while they perform their duties, such as extricating victims or managing hazards.

On the other hand, while applying a parking brake is an important safety measure, it should not be relied upon as the sole method of stabilization since brakes can fail, especially in emergencies. Utilizing cribbing below the chassis alone provides support but does not address lateral movement effectively without also securing the wheels. Therefore, the optimal strategy is to use cribbing or chocks in front and back of the wheels for the best stabilization.