The city council may, by resolution or ordinance, prohibit the operation of vehicles upon any city street or impose restrictions as to weight for a total period of not to exceed ninety (90) days in any one calendar year when any said highway or street, by reason of deterioration, rain, snow or any other climatic or adverse conditions, will be seriously damaged or destroyed, unless the use of vehicles thereon is prohibited or the permissible weights thereof reduced. Upon passage of such a resolution or ordinance, the city council shall erect or cause to be erected and maintained, signs prescribing the weight limitation as set forth in the ordinance or resolution. It shall be unlawful for any person to drive a vehicle on such a posted highway with a weight in excess of the posted limit. (Ord. 1991-44, 12-11-1991)