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Understanding Missouri’s ignition interlock device laws

On Behalf of | Feb 1, 2024 | Criminal Defense |

Missouri’s ignition interlock device laws aim to prevent drunk driving incidents and enhance road safety statewide. These laws mandate the installation of ignition interlock devices for certain individuals convicted of driving under the influence.

By familiarizing oneself with ignition interlock device laws, individuals can better understand their legal obligations and the consequences of DUI convictions.

Who has to install IIDs

Under Missouri law, individuals convicted of certain DUI offenses have to install IIDs in their vehicles. This includes repeat DUI offenders, individuals with a blood alcohol concentration of 0.15% or higher and those who refuse to submit to chemical testing during a DUI arrest. Those looking to reinstate their driving privileges following a DUI suspension or revocation may also have to install an IID.

How IIDs work

IIDs are breath test mechanisms installed in cars to prevent people from driving while intoxicated. Before starting the vehicle, the driver must blow into the device, which measures his or her BAC. If the BAC exceeds the preset limit, the vehicle will not start. IIDs may also require periodic retests while the vehicle is in motion to ensure the driver remains sober.

What consequences exist for non-compliance

Failure to comply with IID laws can result in severe penalties. Some of these penalties might include extended license suspensions, fines and jail time. Tampering with or attempting to bypass the IID is also a criminal offense, punishable by additional penalties. It is important for individuals subject to IID requirements to adhere to all regulations to avoid further legal trouble.

IID laws promote road safety and reduce the incidence of drunk driving. Understanding and adhering to these laws fosters safer roads and communities statewide.