How Ignition Interlock Devices Work

Most people who are convicted of a DUI / DWI in California will face jail time, fines, driver's license suspensions, among other punitive orders. Of the more novel orders is the ignition interlock device. In some cases the ignition interlock device will be mandatory, and at other times, it may be a choice for the driver. A DUI / DWI lawyer will be in a position to assess the viability of the ignition interlock device for their client.

The ignition interlock device attaches to the ignition of a car. A driver will blow into a small alcohol sensor unit that will measure for alcohol on the breath. If there is a certain amount of alcohol on the driver's breath the car will not start. The BAC of a driver can be adjusted on the device. The device can be set to accept any BAC below .04 percent, but to shut the car down if there is any more than .04 percent alcohol in the driver's system. The appropriate BAC setting will be determined between a California criminal defense attorney, the judge and the prosecutor.

The ignition interlock device is a sophisticated mechanism that is built to withstand tampering. Furthermore, the device keeps an internal record every time it is removed from its power source in the car. If the device is mandatory, a driver will be penalized for removing it without just cause.

The device is also designed to test the driver's breath while driving is in progress. Without this feature, a drunk driver may be able to have a sober person blow into the device to get a car started. Therefore, drivers may be required to engage in "rolling re-tests" as they drive. If the BAC spikes above allowed levels during driving, the car will shut down.

The ignition interlock device has been lauded by California DUI / DWI attorneys as well as lawyers from many other states where the popularity of these devices is growing. Studies have shown that where the ignition interlock device has been used, there are fewer repeat offenders. When there are fewer repeat offenders, society benefits. Roads are safer and the court systems are not so clogged with offenders coming in and out on probation violations.

If you believe that the ignition interlock system may be right for you, contact a qualified DUI / DWI lawyer to see if you are eligible to use it. The ignition interlock device can make life easier for a person with a restricted or suspended license if use of the device can eliminate the need for such restrictions or suspensions.