The operation of commercial vehicles having
a gross registered vehicle weight greater than 18,000 pounds (hereinafter
referred to as "commercial vehicles") is hereby prohibited on those
streets or parts of streets designated as Residential 1 and Residential
2 Streets on a map entitled "Street Classifications," dated October
27, 1975, and amendments thereto, on file with the City Clerk.
Signs, in such form and of such design as the
City Manager shall determine, may be placed on such designated streets
and in sufficient number as they deem necessary for the elimination
of traffic of commercial vehicles on such designated streets.