Am I entitled to pre-trial discovery for a traffic citation?

Generally, neither party is entitled to pretrial discovery in traffic forfeiture actions. But a defendant has a limited right to inspect and test devices used by the state to determine whether a traffic violation has been committed, including speed and alcohol detection devices. Before these devices can be inspected and tested, a defendant must first request court approval within 10 days after the alleged violation, and a court must order that these devices be inspected and tested. See Wisconsin statute 345.421.