Are all windows required to function during a vehicle inspection?

During a vehicle inspection, all occupant windows must function properly. This requirement ensures that all passengers have a means of exit in case of an emergency, as well as the ability to ventilate the vehicle. Properly functioning windows also contribute to safety by ensuring visibility and enabling clear communication between passengers in the front and rear seats.

Though some options suggest that only certain windows need to function or that functionality may depend on other features of the vehicle, the regulation clearly specifies that all windows designated for occupant use must be operable. This includes both front and rear windows, as their functionality is vital for passenger safety and operational integrity of the vehicle.