Missouri Ignition Interlock DWI Laws

Missouri Interlock Process

How do I get an interlock license?

  • Complete and submit the Request for Immediate 90-Day Restricted Driving Privilege form within 15 days of the date you receive the Notice of Suspension or Revocation of your Driving Privilege. The request form is contained on the notice that was mailed to you, or you may use the Request for Immediate 90-Day Restricted Driving Privilege with an Ignition Interlock Device (Form 5489).

  • Mail your request to:

    Driver License Bureau
    PO Box 3700
    Jefferson City, MO 65105-3700


    Fax to: 573-526-3452

  • Call LifeSafer Ignition Interlock at 800-634-3077 to schedule your ignition interlock installation. Ask about discounts and special offers!

  • Once installed, LifeSafer will notify DOR that you have an interlock.

  • Call your insurance company and ask for an SR22 proof of insurance form and file with:

    Missouri Driver License Bureau
    PO Box 200
    Jefferson City, MO 65105-0200

Ignition Interlock Cost

How much does an interlock cost in Missouri?

An ignition interlock (IID) is about $3 per day on average in Missouri, but what you are paying for goes beyond the device. LifeSafer IIDs are tested and calibrated for accuracy before ever going out the door.

Our customer service and reporting specialists are also part of LifeSafer’s value to our customers. Your Missouri installation center is constantly updating their training and calibration service so your program runs smoothly and we can install an interlock on any vehicle. There is a lot riding on your device working properly and LifeSafer invests in accuracy and ease of use.

Convenient LifeSafer interlock installers throughout Missouri