DUI checkpoints, also known as sobriety checkpoints, are legal in the United States. The Supreme Court has ruled that these checkpoints do not violate the Fourth Amendment protection against unreasonable search and seizure as long as they are conducted according to certain guidelines. These guidelines include adequate notice to the public, impartial selection of vehicles to stop, and reasonable suspicion for any further tests or searches. Each state has its own specific laws and procedures for conducting DUI checkpoints.
