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Ignition Interlock Devices in Louisiana

An ignition interlock device is an in-car alcohol breath screening device that is connected to the engine’s ignition system to prevent the vehicle from starting if the driver’s BAC is above the legal limit. The ignition interlock device must be installed in all vehicles the driver will be operating prior to the reinstatement of the driving privileges and must remain installed in the driver’s vehicle(s) for the same length of time as the mandatory suspension period of the refusal/submit that is being reinstated, or at least 180 days, whichever is greater.

If the driver refuses to the required test and was previously suspended for refusal, submitted to the chemical test and was above the legal limit, or submitted and was underage, then the device is required as a condition to reinstatement. The device is also required as a condition for reinstatement if the driver submitted to the test with a BAC of 0.08% or above received within five years of a previous suspension on the driving record for Refusal, Submit to the chemical test for intoxication, Submit Underage, DWI, UDUI or Vehicular Negligent Injury. The device will also be required if the incident caused serious bodily injury, substantial risk of death, or fatality, or where there was a passenger in the vehicle 12 years of age or younger.


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