What defines a trailer vehicle?

Answer: B — vehicle designed to be towed by a motor vehicle

A trailer vehicle is defined as one that is specifically designed to be towed by a motor vehicle. This includes various types of trailers that serve different purposes, such as carrying cargo, recreational equipment, or even livestock. By design, trailers do not possess their own motive power; therefore, they rely on another vehicle, typically a truck or SUV, for mobility. Understanding this definition highlights the distinction between a trailer and other types of vehicles, such as those intended for direct passenger transport or those designed solely for off-road use, which are not classified as trailers since they operate independently. Similarly, vehicles meant for carrying larger groups of people, such as vans or buses, also do not fit the criteria for a trailer, as their design is primarily focused on passenger transport rather than being towed.