How does Title 21 define "towed vehicle"?

The definition of "towed vehicle" in Title 21 is specifically aligned with the concept of vehicles being physically pulled by another vehicle. This definition focuses on the act of towing, which indicates that one vehicle is under the control of another, typically for purposes of moving the vehicle that cannot be driven on its own. This can apply to various scenarios, such as a car being towed to a repair shop or a vehicle being relocated due to parking violations.

The other choices do not accurately reflect the definition as laid out in Title 21. For instance, a vehicle that is abandoned, illegally parked, or not operable may eventually be towed, but these characteristics alone do not distinguish a vehicle as a "towed vehicle." Instead, they describe the circumstances surrounding the vehicle, rather than the operational definition used in the context of towing regulations. Thus, option B is the most precise and relevant interpretation of what constitutes a "towed vehicle" under Title 21.