When is it necessary to use chocks when parking a trailer?

Using chocks when parking a trailer is essential for ensuring safety and stability, regardless of the conditions. The primary purpose of chocks is to prevent the trailer from rolling or shifting unexpectedly, which can lead to accidents or injuries.

When a trailer is parked, especially if it's not on a perfectly level surface, there's always a risk of movement due to gravity or external forces, such as wind. Chocks act as a physical barrier that helps to secure the wheels in place, providing a safeguard against potential rolling.

While it might seem sufficient to use chocks only under specific conditions like being on uneven ground or on a hill, relying solely on those instances could lead to dangerous oversights. The best practice is to use chocks whenever a trailer is parked to maintain safety at all times. This consistent application of safety measures ensures that regardless of the terrain or braking systems in use, the risk of unintentional movement is minimized.