Are IID rolling retests safe?

| Sep 30, 2020 | DUI

If you have been charged with a driving under the influence crime in South Carolina, you may need to install and use an ignition interlock device as part of your required penalties. 

The use of an IID may also be the only way that you can reinstate your driving privileges for a while, allowing you to keep your job and take care of your family. Before installing your IID, however, you should understand some of the things you may encounter when using this device. 

Two types of tests with IIDs

Most drivers know that an ignition interlock device keeps a vehicle’s ignition locked until a breath test proves the driver is not under the influence of alcohol. A person ordered to use an IID must therefore take and pass this initial test prior to every new driving trip. 

However, what most people do not know is that once they have successfully started a vehicle and a driving trip is underway, the ignition interlock device system will prompt them to take additional tests. These additional tests are commonly referred to as rolling retests because they happen while the person is actually driving. The purpose of a rolling retest is to ensure a driver has not consumed alcohol since starting the vehicle ignition. 

IIDs and distracted driving

Unfortunately, Car and Driver magazine indicates that participating in a rolling retest may well be one more form of distracted driving. In fact, many accidents have occurred when a driver has been taking one of these tests. 

This information is not intended to provide legal advice but is instead meant to give residents in South Carolina an introduction to a type of testing done with ignition interlock devices that may create a new form of risk for them.