Why should you use chocks when parking a trailer without spring brakes?

The use of chocks when parking a trailer without spring brakes is essential primarily to prevent the trailer from rolling. When a trailer does not have spring brakes, it relies solely on the parking brake, which may not be sufficiently effective to hold the trailer in place, especially on an incline. Chocks are used as a physical barrier that blocks the wheels, providing an additional layer of safety to make sure the trailer remains stationary and prevents any unintended rollaway.

While other aspects, such as loading stability or ease of hitching, may also be relevant in specific situations, the primary and critical function of chocks is to secure the trailer and ensure safety. This makes it clear why utilizing chocks is a standard practice when parking trailers without spring brakes.