DUI: Ignition Interlock Device

This article will discuss what an ignition interlock device is, how it works and reinstatement of suspended licenses.

An ignition interlock device is similar to a breathalyzer, however, the device is connected to the vehicle dashboard or other location inside the vehicle. The device requires that a driver perform a breath test, blowing into the device before starting the vehicle. If the ignition interlock device detects the blood alcohol concentration (BAC) of the driver to be above the programed limit in the ignition interlock device, then the engine of the vehicle will not start.

Below is documented how the ignition interlock device works:

1.The driver blows into the mouthpiece of the device2.The fuel cell inside the ignition interlock device analyses the blood alcohol concentration (BAC) 3.If the (BAC) is above the predetermined limit, the fuel cell triggers a relay to stay open and the car will not start4.If the (BAC) is within the predetermined limit, the fuel cell triggers a relay to close and the car will start

It is important to realize that in almost all cases the driver who has been convicted of a DUI/DWI pays for the installation and lease of the ignition interlock system. The pricing associated with the installation and use of an ignition interlock system varies across the United States. A driver can expect to pay up to $100 for installation and between $50 and $100 per month for the lease.

A common question that is asked by drivers is whether a driver can ‘trick’ the ignition interlock device. It is important to realize that ignition interlock device systems meet strict government requirements and are designed with security and safety in mind. Therefore, even if a driver is able to circumvent an ignition interlock system, the penalties for this are severe and will only make a bad situation even worse. Further, it is important to keep in mind that all events on an ignition interlock device system are recorded and the ‘rolling retest’ is required periodically.

A rolling retest is whereby the ignition interlock device and breathalyzer device requires the user to submit to a test while operating the vehicle. A rolling retest requires another blow test after you begin driving. Such tests are required to ensure that the driver is not drinking and driving in the vehicle after their first test. Rolling retests are required by state law and conducted the exact same way as the first breath test provided. However, there are elements that must be considered when taking the retest. For example, it is important to be prepared and aware that you are required to give a retest. So, the ignition interlock device will start a timer for when your next retest will occur. The first retest can be anywhere from five to ten minutes at random depending on the regulations in your state.

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For a Syracuse defense attorney, the author recommends the DeRoberts Law Firm.