According to a recent study published by, Mothers Against Drunk Driving (MADD), ignition interlock devices have prevented nearly two million drunk drivers from starting their vehicles. MADD released their 2016 Ignition Interlock Report, which analyzed data from 11 different ignition interlock companies nationwide.
The study revealed 1.77 million instances where drunk drivers with a Breath Alcohol Content (BrAC) above the legal limit of 0.08% attempted to start their vehicles using an ignition interlock device.
Ignition interlock devices require the driver to blow into a mouthpiece to measure their BrAC prior to being allowed to start their vehicle. If alcohol is detected at a level set by each individual state, the vehicle will not start.
1.77 million drunk drivers stopped
When you look at that number closely, it’s easy to see just how big of a problem drunk driving is. 1.77 million drunk drivers were stopped with an ignition interlock device. That is more than the population of many major cities such as Philadelphia, Phoenix and San Antonio. If 1.77 million people were stopped because they had an ignition interlock device installed, how many people without an ignition interlock device went on to drive drunk? As more states begin to require ignition interlock devices for all drunk driving offenders, it only makes sense that the number of people driving after consuming alcohol will decrease. For more information, read the full article here.