Amends GS 20-16.3A as the title indicates. Prohibits law enforcement from conducting a checking station or a roadblock unless the checking station or roadblock is to cordon off an area to locate an offender specifically named in an arrest warrant. Provides that any other person passing through the checking station or roadblock cannot be arrested for any reason unless (1) the person has an outstanding arrest warrant or (2) the person has committed an implied consent offense, been warned by a law enforcement officer not to proceed, and continues through the checking station or roadblock despite the warning. Deletes all existing statutory provisions. Effective December 1, 2011, and applies to offenses committed on or after that date.