As to all vehicles and equipment used by a waste hauler, the licensee shall:
1. Prevent waste and wastewater from leaking, spilling, or discharging onto roads or rights-of-way.
2. Ensure proper construction and repair of the equipment to allow cleaning.
3. Maintain vehicles and equipment in an essentially rust-free and sanitary condition and appearance.
4. Display the business name as it appears on the waste hauler license in three-inch or larger letters on the left and right sides of the vehicle.