Amends GS 20-16.3A, as title indicates. Further prohibits a written policy providing a law enforcement agency guidelines for a pattern of stopping vehicles or requesting drivers to produce specified information from authorizing a pattern that is based on a vehicle type. Provides that prosecutions for offenses before the date that the act becomes law are not abated or affected by the act and that the statues that would be applicable but for the act remain applicable to those prosecutions.