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A DUI conviction is a serious matter, whether it is your first or repeat offense. Losing your license is losing your ticket to freedom, leaving you dependent upon others. If the court requires you to have an ignition interlock device, RoadGuard Interlock can help. The easy install of a RoadGuard Interlock device can get you back on the road at any one of our convenient Missouri locations.

Ignition Interlock DUI Laws in Missouri

Missouri law requires any person guilty of a second or subsequent intoxication-related traffic offense to install an ignition interlock device on any vehicle they operate. Drivers must do so before Missouri reinstates any driving privileges.

DUI laws in Missouri continue to evolve as lawmakers strive to make the roads safer for residents and visitors. At the same time, Missouri drunk driving laws offer opportunities for the return of limited driving privileges for some offenders — provided certain conditions and terms are met.

Ignition Interlock Options

If it is your first conviction for drunk driving in Missouri, state law allows you to apply for an immediate 90-day Restricted Driving Privilege (RDP). The RDP, once approved, requires the installation of an ignition interlock device. The 90-day use of the RDP restricts driving to such locations as work, medical appointments, grocery stores, and religious services.

Another option for receiving an RDP is a 30-day suspension followed by a 60-day RDP. This RDP limits driving to the following:

  • Employment
  • Education
  • Alcohol treatment
  • Ignition interlock provider

An RDP differs from a Limited Driving Privilege (LDP). Sometimes referred to as a “hardship license,” the LDP applies to those whose license is suspended, revoked, or denied, or not eligible for reinstatement. For those with more than one DUI in Missouri conviction, they must install an ignition interlock device. In some cases, the court may require the device for only one conviction, depending upon the circumstances.

In order to receive an LDP, you must petition the court. If approved, the LDP allows you to operate a motor vehicle in certain pre-approved situations. Drivers with an active 5 or 10-year denial on their record must install an ignition interlock device with a camera. The court may require a GPS system in addition to the camera.

Another important requirement is SR 22 insurance coverage. This liability insurance is necessary for anyone seeking to get their license reinstated in Missouri and must meet the state’s minimum requirements. If the policy lapses, any temporary license privileges become revoked.

About RoadGuard Interlock Devices

Missouri drunk driving laws don’t have to keep you from returning to the road. For more than 25 years, RoadGuard Interlock has helped people throughout Missouri get back on the road to independence. We offer convenient locations throughout the state.

No matter what type of device you need — one with a camera and/or a GPS — RoadGuard Interlock can provide fast service and installation. Whether you are new to ignition interlock devices or familiar with them, we treat all of our clients with respect. We make the process easy and we even have roadside assistance should you need it.

RoadGuard Interlock offers ignition interlock devices for vehicles of all sizes, even motorcycles. Our devices are compact and easily hidden, keeping your personal life personal. The entire process of starting your vehicle using a RoadGuard Interlock device takes approximately 10 seconds.

If you are court-ordered to have an ignition interlock device due to a DUI in Missouri, contact us. Get back on the road today with a RoadGuard Interlock. Trust us to guide you through the process and eliminate any concerns you may have.


*Links to any third-party websites herein are provided for your reference and convenience only. RoadGuard Interlock did not create nor develop and does not own any such third-party websites. RoadGuard Interlock does not endorse nor support the content of, nor any opinions stated in any such third-party website links. RoadGuard Interlock is not responsible for the content of any third-party website or its accuracy or reliability. Nothing contained in this article or in any such third-party website shall be considered legal advice or be deemed to constitute legal advice. For any legal advice concerning a DUI arrest, charge, conviction, or consequences thereof, you should contact an attorney of your choice.