Since the convicted drunk driver pays for their own unit, the taxpayers also save money in lowered penalty costs. Taxpayers also save money with lowered costs for care of uninsured injured persons. Anyone who drives. If your unit has not been mandated by the court, you can use a master key to disable it. Drivers of mandated units cannot disable the device.
Parents can control when the device is used by their young drivers with a master key.
Yes, if the unit is not mandated by the court. Yes, the driver has four attempts to complete a 6 second blow at 1.5 pounds of air pressure to provide a deep lung sample. If none of these attempts pass the test, the car's ignition must be turned off. The sequence can be started again by turning the ignition back on. Where the law provides, those convicted of drunken driving may continue to drive only if they equip their car with an ignition interlock device.