Which of the following describes a trailer?

A trailer is defined as a vehicle that is designed to transport persons or property without bearing weight on a motor vehicle. This definition is accurate because trailers are typically towed by another vehicle and do not have their own means of propulsion. They rely on a towing vehicle for movement, which is essential to their classification.

Understanding this definition is crucial, as it helps differentiate trailers from other types of vehicles, especially those that can operate independently. For instance, vehicles that carry loads on their own power would be categorized as motorized vehicles, not trailers, and vehicles designed exclusively for passenger transport carry specific and separate classifications. A trailer, by definition, cannot be permanently fixed to one location since it is intended to be towed and moved as needed. Therefore, the choice correctly captures the essence of what a trailer is in the context of transportation regulations.