Driving a vehicle while impaired is a dangerous crime. Tough enforcement of drunk-driving laws has been a major factor in reducing alcohol-impaired-driving deaths since the 1980s. Charges range from misdemeanors to felony offenses, and penalties for impaired driving can include driver’s license revocation, fines, and jail time. It’s also extremely expensive. A first-time offense can cost the driver upwards of $10,000 in fines and legal fees.
Some States require offenders to install ignition interlock devices at the driver’s own expense. An ignition interlock device is a breath test device connected to a vehicle’s ignition. The vehicle will not start unless the driver blows into the interlock and has a BAC below a pre-set low limit, usually .02 g/dL. NHTSA strongly supports the expansion of ignition interlocks as a proven technology that keeps drunk drivers from getting behind the wheel.