All licenses shall be kept by the licensee conspicuously posted and located on the premises utilized by the licensee. Any licensee transacting and carrying on business, but not operating at a fixed place of business in the city, shall keep the license upon his person at all times while transacting and carrying on such business. Any licensee to whom a license has been issued by the License Collector, in addition to the license certificate, shall obtain a paper or metal license device, as prescribed by the City Manager. Said device shall at all times during the effective dates thereof be affixed to the vehicle in a location designated by the City Manager. A fee of $2 per device shall be paid in addition to the tax required under this chapter.
(`83 Code, § 5.08.070)