Wisconsin’s Ignition Interlock Device Laws

Wisconsin-FlagIn the State of Wisconsin, individuals convicted of operating a vehicle while intoxicated (OWI) must use an ignition interlock device (IID) in their vehicles for a minimum of one (1) year. Repeat offenders are required to use an IID, as are all individuals who refuse a chemical test when suspected of OWI and first-time offenders with a blood alcohol concentration (BAC) of .15 or higher. An IID must be installed in all vehicles registered to or owned by the offender. State-authorized service providers must install, maintain, and remove the IIDs at appropriate times. The device must be serviced every sixty (60) days and all costs associated with the use of all IIDs are the responsibility of the offender.

When court-ordered to use an IID, individuals may apply for an occupational license. This license allows offenders to operate vehicles with an IID installed. Driving privileges may be restricted to driving to and from work and school and other places required for household maintenance. An IID must be installed on all vehicles. If the court agrees this is a financial hardship, it may exclude one or more vehicles from the order. Rolling re-tests are standard for IIDs authorized by the State of Wisconsin.

Actions that result in a six (6)-month extension of the use of an IID include:

  • Circumvention
  • Removal
  • Tampering
  • Disconnection
  • Sample manipulation