Vital for preventing drunk drivers from getting behind the wheel, ignition interlock systems help keep the roads safe. If a person has been convicted of a DUI, they may need to have one installed in their car. Here are a few things you should know about these devices and how they help reduce criminal acts. 

Understanding Ignition Interlock Systems

What Are Ignition Interlock Devices? 

Developed in 1988, ignition interlock systems contain a handheld unit, a mouthpiece, and a relay cord that hooks into the car. To start a car with an interlock system, the driver needs to breathe into the mouthpiece, where the unit will analyze the breath sample.

If the unit detects high levels of alcohol, the relay sends a signal to the ignition and won’t allow the car to start. In some states, failing an initial interlock test prevents the driver from attempting to start the car again for a set period of time. Modern ignition interlock systems are even designed with a camera, which ensures the proper person is breathing into the unit. 

How Do They Work?  

Ignition interlock systems are programmed to check for your state’s predetermined allowable levels of BAC, or breath alcohol concentration. While all systems require you to use the unit before starting the car, some systems require ongoing testing to ensure that the driver has not become intoxicated after the trip has started. 

After prompting you to pull over, you will have a set amount of time to complete the test. The system logs the results of all tests, including randomized testing, to comply with court mandates and ongoing monitoring. 

Ignition interlock devices are highly effective at preventing re-arrests for DUI, especially when they are still installed in the car. In fact, one randomized study found that drivers who used interlock devices were 65% less likely to be re-arrested for a DUI. 

When you need an ignition interlock system you can count on, turn to Tennessee Recovery & Monitoring for help. Since its inception, this trusted business has been offering small, discreet, and highly effective alcohol testing solutions for motorists, keeping people safe on the road. Learn more about their devices and online classes by visiting their website, or by giving their Cleveland, TN, office a call at (855) 472-7269.