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What is the Louisiana ignition interlock device law?

Facing a DUI charge can be a nerve-wracking time in your life. A driver may be unsure of what to do after their traffic stop. A drunk driving conviction can have various penalties, including having an ignition interlock device installed in your car.

An ignition interlock device (IID) integrates breath alcohol testing with your vehicle’s ignition system. Prior to starting your vehicle, you will need to submit a breath sample into the hand-held portion of the device that tests the presence of alcohol. If your Breath Alcohol Concentration is below Louisiana’s ignition interlock limit, 0.030, your vehicle will start. If a higher concentration of alcohol is detected, your vehicle will not start until a passing sample is provided.

IID requirements

Upon a driver’s first offense, and if the offender had a blood alcohol concentration of 0.20 or greater, they shall be issued a restricted driver’s license during the entire period of the two-year driver’s license suspension. This also requires having a functioning ignition interlock device installed in your vehicle for the first year of the suspension.

Upon a second offense and a blood alcohol concentration of 0.20 or greater, the state may require a restricted driver’s license during the entire four years on your suspension. This will also require a functioning IID during the first three years of the four-year suspension.

The law mandates the length of time an interlock must remain in the vehicle and this cannot be reduced by delaying the installation. Only approved interlock manufacturers may install/uninstall interlock devices in a vehicle. Louisiana requires installation in all vehicles the driver will be operating prior to reinstatement of the driving privileges.

A DUI is a serious crime in Louisiana and prosecutors and law enforcement aggressively prosecute those facing DUI charges. A DUI conviction can tarnish a person’s reputation and be an inconvenient predicament. Not only can you face criminal charges, but you put your life and the lives of others at risk when driving under the influence.

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