Ignition Interlocks - What You Need To Know: A Toolkit for ...

www.nhtsa.gov

permitting the use of breath alcohol ignition interlock devices (hereinafter referred to as “igni-tion interlocks” or “interlocks”) to prevent alcohol-impaired driving. An ignition interlock is an after-market device installed in a motor vehicle to prevent a driver from operating the vehicle if the driver has been drinking.

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