View Here : Breathalyzer In Car
An ignition interlock device is a breathalyzer installed in your vehicle that measures the level of alcohol in your breath. Connected directly to your vehicle’s ignition system, you are required to blow into the attached mouthpiece to test your Breath Alcohol Concentration (BrAC).
An ignition interlock device may be installed in your car after a drunk driving conviction, which will not allow your vehicle to start if it detects a certain level of alcohol on your breath. It can be a real pain in the neck, but sometimes it’s the only thing standing between you and a jail cell.