(a) 
Whenever any resolution of the city council designates and describes any street or portion thereof as a street the use of which is permitted by any vehicle exceeding a maximum gross weight of 10,000 pounds.
(b) 
When any such truck route is established and designated by appropriate signs, the operator of any vehicle exceeding a maximum gross weight limit of 10,000 pounds shall drive on such route and none other, except that the operator of any vehicle exceeding a maximum gross weight of 10,000 pounds coming from a truck route may use restricted streets when necessary for the purpose of making pickups or deliveries of goods, wares and merchandise from or to any building or structure located on such restricted streets or for the purpose of delivering materials to be used in the actual and bona fide repair, alteration, remodeling or construction of any building or structure upon such restricted streets for which a building permit has previously been obtained. The phrase "maximum gross weight" used in this section shall have the same meaning as the phrase "manufactured gross vehicle weight rating" defined in the California Vehicle Code section 390.
(c) 
The provisions of this section shall not apply to:
(1) 
Passenger buses under the jurisdiction of the Public Utilities Commission, Metropolitan Transit Authority; or
(2) 
Any vehicle owned by a public utility while necessarily in use in the construction, installation of or repair of any public utility.
(d) 
Those streets and parts of streets established by resolution of the city council are hereby declared to be the truck routes for the movement of vehicles exceeding a maximum gross weight of 10,000 pounds.
(e) 
The use of any street or part of any street not established as part of the truck route is hereby prohibited by any commercial vehicle (as defined by California Vehicle Code section 260) exceeding a maximum gross weight of 10,000 pounds, except as allowed in subsections (b) and (c) above. Appropriate signs shall be posted as designated by the California Department of Transportation "Traffic Manual" in accordance with criteria established by the transportation services manager of the City of Costa Mesa, showing which streets are truck routes. It is unlawful for any person to operate or park, or cause to be operated or parked, any vehicle in violation of this provision.
(Code 1960, § 3413.1; Ord. No. 66-35, 8-15-66; Ord. No. 86-22, § 2, 11-17-87; Ord. No. 92-4, § 2, 2-3-92; Ord. No. 2024-09, 7/16/2024)
The transportation services manager is hereby authorized to establish and post signs giving notice of a maximum load limit of 6,000 pounds per vehicle on any street or part of a street which is not a truck route.
(Ord. No. 75-51, § 2, 11-3-75; Ord. No. 87-26, § 2, 12-7-87; Ord. No. 2024-09, 7/16/2024)
Exceeding the load limit as set forth in section 10-249 shall be deemed a misdemeanor and shall be punishable as set forth in section 1-33 of the Costa Mesa Municipal Code.
(Ord. No. 75-51, § 2, 11-3-75; Ord. No. 2024-09, 7/16/2024)