(a) A person commits an offense if, as the operator of a vehicle, he enters a vehicle ramp of the parking garage and the vehicle:
(1) has a gross weight in excess of 6,000 pounds;
(2) has an overall length in excess of 21 feet;
(3) has an overall height in excess of six feet nine inches; or
(4) is attached to a trailer.
(b) It is a defense to prosecution under this section that the person is making an authorized delivery at the loading dock and gained access to the loading dock through the lower level of the Dallas Convention Center Parking Facility. (Ord. 14911)