(A) The city council, with respect to highways under its jurisdiction, may, by ordinance or resolution, prohibit the operation of vehicles upon any highway, or impose restrictions as to the weight of vehicles to be operated upon any highway, for a total period of not to exceed 90 days in any one calendar year, whenever any highway by reason of deterioration, rain, snow, or other climate conditions will be seriously damaged or destroyed, unless the use of vehicles thereon is prohibited or the permissible weights thereof reduced.
(B) The council, after enacting any such ordinance or resolution, shall erect or cause to be erected and maintained signs designating the provision of the ordinance or resolution at each end of that portion of any highway affected thereby, and the ordinance or resolution shall not be effective unless and until the signs are erected and maintained.
(C) The council, with respect to highways under its jurisdiction, may also, by ordinance or resolution, prohibit the operation of trucks or other commercial vehicles, or may impose limitations on the weight thereof, on designated highways, which prohibitions and limitations shall be designated by appropriate signs placed on the highways.
(D) The Department shall likewise have authority as hereinbefore granted to local authorities to determine by resolution and to impose restrictions as to the weight of vehicles operated upon any highway under the jurisdiction of the department, and the restrictions shall be effective when signs giving notice thereof are erected upon the highway or portion of any highway affected by that resolution.
(E) A municipality is authorized to enforce a county weight limit ordinance applying to county highways within its corporate limits and is entitled to the proceeds of any fines collected from the enforcement.
(ILCS Ch. 625, Act 5, § 15-316) Penalty, see § 70.999