Do ignition interlock devices keep people from having repeat DUI offenses?
According to a study done by the International Council on Alcohol, Drugs and Traffic Safety (ICADTS), ignition interlock devices, as well as monitoring, led to a 40-95% reduction in conviction rate of people who were previously arrested for DUI. This is important, because the rate of DUI convictions is a good predicator of crash risk involvement. However, this is not a perfect solution. The device only works when it is on the vehicle. When it is taken off, people may revert back to their old habits. It is also only ordered if the person has had prior DUI convictions – first time offenders are normally not ordered to have the device installed.
