In this section, the following terms have the meanings indicated. “Derelict vehicle” means a vehicle that exhibits a defect, damage, or deterioration sufficient to preclude proper operation on the highway. “Unlicensed vehicle” means:an unregistered vehicle; or a vehicle on which current registration tags are not displayed. Outdoor storage or maintenance of abandoned, derelict, or unlicensed vehicles is prohibited in all districts. Ord. 16-581