Amends GS 20-118(c) as the title indicates. Provides that subsections (b), weight limitations,and (e), penalties,of GS 20-118(c) do not apply to a single axle truck owned, operated by, or under contract to a public utility, electric or telephone membership, or municipality. Requires that the truck must meet all of the following conditions in order to be exempt for subsections (b) and (e): (1) must be used in connection with the installation, restoration, or maintenance of utility services in a portion of the state where naturally occurring conditions prevent the safe navigation and operation of a truck with more than a single axle or using a trailer; (2) does not operate on an interstate highway; (3) does not exceed a single axle weight of more than 28,000 pounds; and (4) does not exceed a maximum gross weight in excess of 48,000 pounds.