The director may prescribe conditions of storage and handling of any livestock product or poultry product by any person engaged in the business of buying, selling, freezing, storing, or transporting such livestock or poultry product in intrastate commerce to assure that it will not be adulterated or misbranded when delivered to the consumer, including requirements that any vehicle used by any establishment which operates under state inspection for transporting any dressed carcass of any animal, including any poultry, intended for human consumption, any part of any such carcass, meat, meat food product, or poultry product inspected and marked pursuant to this chapter shall be maintained in a clean and sanitary condition and shall be regularly inspected by an inspector stationed at the establishment.