Missouri Interlock Device

In Missouri, ignition interlock devices (IIDs) are required for certain DUI offenders. Here’s some information about interlock devices in Missouri:

1. Mandatory IID Requirement: Missouri law mandates the use of ignition interlock devices for individuals convicted of certain DUI offenses. This includes repeat offenders, individuals who caused injury or death while driving under the influence, or those who refused to submit to a breathalyzer test.

2. Installation and Monitoring: Offenders are required to have an IID installed in their vehicles. The device measures the driver’s breath alcohol concentration (BAC) before allowing the vehicle to start. It also requires periodic breath samples while the vehicle is in operation.

3. Duration of IID Requirement: The duration of the IID requirement varies based on the offense and the number of prior DUI convictions. For example, a first-time offender may be required to use an IID for a minimum period of six months, while repeat offenders may face longer IID requirements.

4. Restricted Driving Privileges: In some cases, individuals may be eligible for restricted driving privileges that allow them to drive with an IID installed in their vehicle during their license suspension or revocation period.

5. Costs and Compliance: Offenders are responsible for the costs associated with installing, maintaining, and monitoring the IID. Compliance with the IID requirement is crucial, and failure to comply or tampering with the device can result in extended IID periods or additional penalties.

It’s important to note that specific requirements and regulations regarding ignition interlock devices in Missouri can be subject to change. It’s advisable to consult with the Missouri Department of Revenue or a legal professional specializing in DUI/DWI law in Missouri for the most accurate and up-to-date information on IID requirements and regulations in the state.