Missouri DWI and Interlock Laws

Interlock Process

How to get an interlock license

  • Complete and submit the MO 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

    OR

    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

Interlock Cost

How much does an interlock cost in Missouri?

An ignition interlock (IID) is about $3 per day on average in Missouri, but you’re paying for more than the device.

LifeSafer has been in the business of helping drivers get back on the road safely for 30 years. We know what we’re doing, which means you won’t be stuck out in the cold – literally.

LifeSafer customer service and reporting specialists are also part of our value. Head into any one of our Missouri installation centers and see for yourself. Licensed LifeSafer interlock installers are constantly updating their training and calibration service. A lot is riding on your breathalyzer working properly, which is why LifeSafer invests in accuracy and ease of use.

Convenient LifeSafer interlock installers throughout Missouri