It is unlawful to disassemble, construct, reconstruct, repair and/or service motor vehicles or motor vehicle trailers of any kind in or upon any street, road, alley or public thoroughfare in the city or upon private property where visible from a street or the property of adjoining owners, except for emergency service – provided, that such emergency service shall not extend over a period of seventy two hours, except when required to be made in a street, road, alley or other public thoroughfare – in which case, an emergency service shall not extend over a period of two hours, and does not interfere with or impede the flow of traffic. The violation of this section shall also constitute a public nuisance and a misdemeanor, which shall be punishable, upon conviction, by a fine not exceeding two hundred dollars, or by imprisonment in the city jail for a period not exceeding sixty days, or by both such fine and imprisonment.