Alcohol ignition interlock

Alcohol ignition interlock

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An alcohol interlock is a breath-testing device that is connected to the starter or ignition of a vehicle, or other on-board computer system. To start the vehicle the driver must provide a breath sample with an alcohol concentration below the pre-set limit (typically set at a value corresponding to a blood alcohol concentration of .02). Also, the driver has to provide repeated breath samples while the vehicle is in use to ensure the driver remains sober.

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