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Increase in Use of Ignition Interlocks
By MADD | October 2, 2013| 6 Comments | Filed in: Drunk Driving

According to a new survey conducted by Impact DWI, Inc., there are nearly 305,000 ignition interlock devices currently installed in the U.S.  This demonstrates that usage of interlocks has increased at a rate of 30,000 units installed per year over the past eight years, while the number of drunk driving fatalities has been decreasing during the same time period. 

The findings of this survey validate the success of the Campaign to Eliminate Drunk Driving®, which calls for the use of ignition interlocks for all convicted drunk drivers with a blood alcohol concentration (BAC) .08 or greater.

States with well-implemented ignition interlock laws have seen significant reductions in drunk driving deaths.  Most recently in Kansas, drunk driving deaths have dropped by 31 percent, due in part to their all-offender interlock law implemented in 2011.  

MADD’s Campaign has been a strong voice for expanding the use of ignition interlocks to all convicted drunk drivers, and lawmakers are seeing that interlocks are a more effective approach to protect the public.  Prior to 2006, the recommended approach in dealing with a drunk driver was license suspension without driving privileges or limited work- or time-restricted driving privileges.  Since the launch of MADD’s Campaign, advocates like AAA and the National Transportation Safety Board agree that the best practice is to require the use of ignition interlocks for all convicted drunk drivers for at least six months. 

In 2006, just over 100,000 ignition interlocks were installed in the United States and only one state, New Mexico, required ignition interlocks for all convicted drunk drivers.  Today, the number of interlocks installed has more than tripled and 20 states currently require or highly incentivize the use of ignition interlocks for all convicted drunk drivers.

This year, MADD’s legislative efforts proved successful with both Maine and Tennessee enacting all-offender ignition interlock laws. Additionally, MADD worked in New York to improve Leandra’s Law by closing loopholes to increase the use of installed ignition interlocks for convicted drunk drivers over the previous drunk driving law, which resulted in only one-third of convicted drunk drivers installing an interlock. 

MADD calls on the 30 remaining states and DC to take action and enact an all-offender interlock laws. Find out if your state requires ignition interlocks for all DUI offenders and take action.

MADD also urges those states that have enacted all-offender interlock laws to fine-tune and close loopholes so all convicted drunk drivers must go an interlock for at least six months prior to regaining unrestricted driving privileges. 

For more information on ignition interlocks, please visit



Submitted by cookie at 06:35 PM on November 5, 2013
We definitely need to send a stronger message. Far too many innocent people getting killed, and streets are no longer safe, especially on week-ends.
Submitted by jdoggg at 10:07 AM on October 8, 2013
this is a really bad thing and I am with the madd this a really good thing .go madd
Submitted by twinsmom at 07:15 PM on October 4, 2013
what happen to these people that have them put into the car and then later they take them out. is there a big fine or punishment for unhooking them.
Submitted by George F Gitlitz, MD at 11:24 AM on October 4, 2013
RID (Remove Intoxicated Drivers, Inc.) has been campaigning for IIDs since 1986. And from the very outset we advocated putting them on every car that comes off the assembly line. No other sanction -- including mandatory sentences -- comes close to the IID in effectiveness. MADD is to be commended for pushing this, as should the state governments which are gradually implementing it. George F Gitlitz, MD, National Advisory Bd., RID-USA, Inc.
Submitted by texasreb at 11:11 AM on October 4, 2013
So are you with cell phones.
Submitted by NO DUI at 01:32 PM on October 3, 2013
All the lock out's and safety's are well and fine for the person that obeys the law, But those aren't the people you are dealing with are they, or you wouldn't need these things to start with! They would just know not to drive while they are intoxicated, After it's the law!! Not only do we look to these criminals that kill our loved one's daily to stop doing what they do we expect them to obey the law now that they have been caught driving under the influence, some multiple times!We need law's that send a message just as we have for gun crime. Prison mandatory sentence! We need to get them off the streets! they are killing Innocent Children Daily, Moms/Dad Daily, Aunts/ Uncles Daily, and the list goes on. We don't need machines to help the criminal! We need mandatory sentence!! send the message we are not going to lose our loved ones anymore!

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