Which of the following best defines a commercial motor vehicle?

A commercial motor vehicle is best defined as a vehicle that is regularly used for carrying freight or more than eight passengers. This definition encompasses a wide range of vehicles typically used in commerce, including trucks, buses, and vans that have specific operational characteristics. The key aspect is that these vehicles are utilized for commercial purposes, rather than personal use.

In the context of the definition, the distinction is important because it outlines the regulatory framework that applies to vehicles engaged in commercial activities, which often include weight limits, safety requirements, and driver qualifications. Vehicles used for farming or personal use do not fall under this classification since they are not primarily utilized for commercial purposes. Furthermore, while weight limits may apply to commercial vehicles, being classified solely by weight does not capture the vehicle’s intended use, which is central to the definition of a commercial motor vehicle.