What procedures must law enforcement officers follow to make sure sobriety checkpoints are legal?
In the same year the Sitz case was decided, the National Highway Traffic Safety Administration (NHTSA) published recommended procedures for D.U.I. roadblocks. For a D.U.I. checkpoint to be legal, law enforcement must follow guidelines regarding such issues as the location, operation and publicity of the checkpoint, and the extent to which a checkpoint officer has discretion to act.
