Are drunk driving checkpoints legal in New Jersey?

The short answer is yes as long as certain procedures are followed. A roadblock or DWI checkpoint in New Jersey is constitutional if the location of the checkpoint is appropriate based on historical arrest rates at the location, public safety and awareness would be fostered by the checkpoint, there is participation in command and supervision, and notice of the checkpoint is published to provide motorists with notice. If these procedures are followed, the DWI checkpoint is valid.