Ignition Interlock

Ignition Interlock Clients

  • Interlock Manufacturers

    Each ignition interlock manufacturer below has one or more approved interlock device models certified in the state of Washington. Please Note: The Washington State Patrol does not endorse any manufacturer, service center, or device. Their appearance on this page confirms only that the devices have been certified by the Washington State Patrol and meet federal and state rules for breath alcohol ignition interlock devices. The list below randomly rotates when this web page is accessed or refreshed.

    Draeger Inc.
    1221 S Belt Line Rd., Suite 700 – Coppell, TX 75019

    Guardian Interlock Systems
    125 Church Street, Suite 320 – Marietta, GA 30060

    Smart Start Inc.
    500 E Dallas Road – Grapevine, TX 76051

    11035 Aurora Avenue – Des Moines, IA 50322

    4290 Glendale Milford Rd. – Cincinnati, OH 45242

    Simple Interlock LLC
    7100 Blvd 26, Suite 301A – Richland Hills, TX 76118

    Information about device certification and standards is available at this link or by writing to the Ignition Interlock Program, Washington State Patrol, 811 E. Roanoke, Seattle WA 98102.

  • Documents & Forms

    Anytime a vehicle equipped with a certified ignition interlock device is serviced at a state-licensed automotive repair or service facility, a Vehicle Service Affidavit must be fully completed and turned in to the interlock device’s manufacturer, following the completion of service.

    Vehicle Service Affidavit
    • Vehicle Service Affidavit – Espanol

    This form will be accepted by all certified ignition interlock service centers in Washington State as a letter authorizing the installation of an ignition interlock device into a vehicle not owned or registered to the interlock restricted driver.

    Non-Owned Vehicle Installation Approval
    • Non-Owned Vehicle Installation Approval – Espanol

  • Informational Videos

Ignition Interlock Manufacturers