Whenever any resolution of this city 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 limit of three tons, the director of public works is authorized to designate such street or streets by appropriate signs as "Truck Routes" for the movement of vehicles exceeding a maximum gross weight limit of three tons.
(Prior code § 20-1501 (a))
When any such truck route or routes are established and designated by appropriate signs, the operator of any vehicle exceeding a maximum gross weight limit of three tons shall drive on such route or routes and none other; except, that nothing in this chapter shall prohibit the operator or any vehicle exceeding a maximum gross weight of three tons from a "Truck Route" having ingress and egress by direct route to and from 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 for which a building permit has previously been obtained therefor.
(Prior code § 20-1501 (b))
The provisions of this chapter shall not apply to:
A. 
Passenger buses under the jurisdiction of the Public Utilities Commission; or to
B. 
Any vehicle owned by a public utility while necessarily in use in the construction, installation or repair of any public utility.
(Prior code § 20-1501 (c))
Those streets and parts of streets established by resolution of the council are declared to be truck routes for the movement of vehicles exceeding a maximum gross weight of three tons.
(Prior code § 20-1501 (d))
A. 
Whenever any resolution of this city designates and describes any street, or portion thereof, as a street the use of which is prohibited by any commercial vehicle, the director of public works shall erect and maintain appropriate signs on those streets affected by such ordinance.
B. 
Those streets and parts of streets established by the resolution of the council are declared to be streets, the use of which is prohibited by any commercial vehicle. The provisions of this section shall not apply to passenger buses under the jurisdiction of the Public Utilities Commission.
(Prior code § 20-1502)