Amends GS 20-157(f) as the title indicates. Provides that for purposes of the provisions of subsection (f), which directs motorists to move over or if it is not possible to do so, slow the vehicle speed and be prepared to stop when encountering a public service vehicle parked or standing within 12 feet of a roadway, public service vehicle includes a vehicle being used to restore utility service, including electric, cable, phone or gas utility or is a highway maintenance vehicle owned and operated by the state or a local government (was electric utility service only). Effective October 1, 2011, and applies to offenses on or after that date.