(A)   The City Council by resolution may designate streets on which travel by commercial vehicles in excess of 10,000 pounds axle weight is prohibited.  The Chief of Police shall cause appropriate signs to be erected on those streets.  No person shall operate a commercial vehicle on posted streets in violation of the restrictions posted.
   (B)   The weight restrictions established in division (A) shall not apply to city or emergency vehicles, public school buses or to garbage and refuse trucks making regular collections and are under contract with the city, nor shall the weight restrictions in division (A) apply if a commercial vehicle must use the particular street in question for the purpose of local pick-up or delivery.
Penalty, see § 10.99