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Ignition Interlock Devices in Montana

As stated above, Montana law may require that an individual be required to install an ignition interlock device after being convicted of a DUI related offense. An ignition interlock devices is a device that is installed in cars which requires an individual to breathe into to it to calculate the person’s alcohol concentration. The vehicle will only be started if there is no trace of alcohol levels set by the machine.  The state will have a set of rules which govern the specifics of the interlock device. The device is regulated by the state and must be safe to use, hard to circumvent, and must be manufactured by an entity who is insured from product liability for the equipment.

The law also prevents an individual from assisting another person in circumventing the process of the interlock device in order to use the vehicle. This means an individual who blows into the device so that the vehicles owner can now drive it is against the law. A person who is convicted of assisting another circumvent an interlock device could be punished to a fine up to $500 and up to 6 months imprisonment.  Under a first conviction of a DUI related offense, the court has the discretion on whether or not to implement the interlock device. However, on a second or subsequently conviction (if the individual is given permission to drive a vehicle) the court is required to include an interlock device on the individual’s vehicle.

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