MADD Ignition Interlock Report 2016 - page 7

Aspart ofMADD’s
Campaign toEliminateDrunkDriving
launched in 2006, MADD calls for all arrested drunk
drivers with an illegal blood alcohol concentration
(BAC) of .08 or greater to use an ignition interlock
during a court-ordered or DMV-administrated license
suspension period. Twenty-five states have laws like
this in place.
All-offender interlock laws save lives. Due in part to
all-offender interlock laws, drunk driving deaths have
declined dramatically and at a better pace compared
to the national average decline.
States with all-offender ignition interlock laws have
experienced substantial annual decreases in drunk
driving fatalities. For example, the number of drunk
driving fatalities in Arizona have dropped by 50
percent since passing an all-offender ignition interlock
law in 2007, according to data from National Highway
Transportation Safety Administration’s (NHTSA) 2014
Fatal Analysis Reporting System (FARS).
In 2015, based on the FARS data, the decrease in
Arizona was 50 percent, illustrating the continued
progress of one of the oldest all-offender ignition
interlock laws in the U.S. These decreases are unheard
of in traffic safety, and similar results in states that
don’t have all-offender ignition interlock laws could
save thousands of lives.
Arizona is an example of a state that has enacted a
strong all-offender law with a compliance-based
removal component. Interlocks are also required for
refusing an alcohol test.
When Arizona enacted its all-offender ignition
interlock law in 2007, 399 people had died as a result
of drunk driving the previous year. Seven years later,
drunk driving fatalities have been cut in half to 199 in
In Arizona, offenders who are ordered to use an ignition
interlock must show proof that they have complied
with the order before they can receive unrestricted
driving privileges. In other states, offenders can wait
until the order expires and obtain driving privileges
without ever using an ignition interlock.
Because of Arizona’s strong law, the state has had some
of the highest interlock installation rates in the country.
This has undoubtedly contributed to Arizona’s success
in reducing drunk driving fatalities by 50 percent in
seven years – from 2007 to 2014.
Fatality Reductions Since Enacting Interlock Law
Arizona (‘07) Arkansas
Kansas (‘11) Louisiana
Mew Mexico
Oregon (‘08) Tennessee
Virginia (‘12) West Va.
Year Prior to Interlock Law 2014
1,2,3,4,5,6 8,9,10,11,12,13,14,15,16
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