In response to this sad fact, most states now recommend the use of ignition interlock devices in the vehicles of DUI offenders, and several states require interlocks for all offenders. Up until now, Hawaii was one of only four states with no ignition interlock law of any kind.
Interlock devices are small, sophisticated instruments installed into the starting circuit of vehicles. They are about the size of a cell phone. The driver blows into the device using a special technique that discourages others, who have not been trained, from performing the procedure. Some devices also come equipped with a digital camera that takes a synchronized photo of the person initiating the test. In just a few seconds, the device determines if the operator is alcohol-impaired, based on pre-programmed parameters. The vehicle starts up for a sober driver and will not start for a drinking driver. Periodic re-tests are required after the car is underway. A data logger captures and reports all pertinent data, including attempts to circumvent or tamper with the device.
