Are police DUI checkpoints constitutional?
Police DUI checkpoints, under certain conditions, are constitutional and that’s why we see them take place quite frequently. However, it has to be a systematic stop of vehicles. So the police cannot use a checkpoint as unfettered discretion simply to stop who they would like to. They can’t arbitrarily or randomly pull vehicles over in a checkpoint. It has to be a systematic stop in which everybody who goes through the checkpoint is stopped and investigated for suspicion of drunk driving.
