It shall be unlawful for any person, firm, or corporation, engaged in the sale or barter of vegetables, to use any sidewalk in the City and County of San Francisco for the purpose of selling, storing, dealing in or bartering said vegetables, and it shall be unlawful for any such person, firm or corporation to keep or permit any vehicle standing alongside of said sidewalk, for the purpose of selling, storing, bartering or dealing in vegetables, or for the purpose of carrying on the business of selling, bartering or dealing in vegetables, and it shall be unlawful for any such person, firm or corporation to deal in, sell or barter any vegetables from any standing vehicle while in said street.
Nothing in this Section, however, shall be interpreted to prevent a person owning or renting a store or stall for the purpose of dealing in, selling or bartering vegetables, from using the sidewalk in front of the said store or stall for the purpose of transporting said vegetables from the said store or stall to any vehicle or from any vehicle to the said store or stall, or from storing the same on the sidewalk for the purpose of such transportation or from keeping any vehicle standing in front of the said store or stall for the purpose of said transportation.