A. Designated Vehicles: All vehicles, combinations of vehicles or combinations of vehicles and load having a length of more than forty five feet (45'), or a width of more than eight feet (8') with load or a width of more than fourteen feet (14') with or without load, and all vehicles registered for thirty six thousand (36,000) pounds' gross weight or more are restricted vehicles.
B. Central Business District Restrictions: No restricted vehicle shall enter or occupy any portion of a central traffic district between the hours of eleven o'clock (11:00) A.M. and six thirty o'clock (6:30) P.M. of any day, and no restricted vehicle shall enter or occupy any city street at any time of the day that is not designated as a restricted vehicle and truck route or a hazardous cargo route as set out in sections 12.104.040, "Schedule 3, Restricted Vehicle And Truck Routes", and 12.104.050, "Schedule 4, Hazardous Cargo Routes", of this title, unless so authorized by a permit issued therefor in accordance with section 12.28.150 of this chapter, or its successor. Exceptions will be made for those instances where designations are on the above mentioned restricted routes.
C. Areas For Driving: All restricted vehicles shall be driven only upon the state highways, including the interstate system, within the city limits, deviating therefrom only when necessary to traverse another street or streets when necessary for loading, unloading or servicing, and then only departing from the said state highway route at the nearest reasonable and practical point; provided, however, that no such vehicle shall be loaded, unloaded or serviced upon any street or part of street if there is usable off street loading, unloading or servicing space available.
D. Commercial Vehicle Routes: Commercial vehicles which service the intracity needs, except those specified in subsections A, B, E and F of this section, shall use the streets designated in section 12.104.040, "Schedule 3, Restricted Vehicle And Truck Routes", of this title.
E. Explosives, Corrosives And Flammable Substances: Vehicles carrying explosives, corrosives or flammable substances, in compliance with department of transportation regulations governing such transportation, may be driven only upon those streets or parts of streets described in chapter 12.104.050, "Schedule 4, Hazardous Cargo Routes", of this title, unless otherwise authorized by a written permit issued by the chief of the city fire department. The United States department of transportation rules and regulations governing transportation of explosives, flammables and other dangerous articles, are applicable to common, contract and private carriers in the city, and are hereby adopted by this reference. In no event shall any such vehicle operating in violation of the department of transportation rules and regulations operate on any street or road in the city.
F. Exemptions: The provisions of this section shall not apply to passenger buses operating under the authority of the state public service commission, nor to authorized emergency vehicles. (Prior code title 46, art. 9 § 180)