§ 71-h. Vehicles used for transportation of frozen desserts. All vehicles used for the transportation and distribution of frozen desserts shall be constructed of impervious material capable of being cleaned, shall be kept clean and sanitary, shall be so operated as to protect their contents from contamination, and shall have prominently displayed thereon the name and address of the licensee who sells, offers or exposes for sale, or holds with intent to sell, such frozen desserts.