Over 90 % of Fatal DUI crashes involve Drivers who've not been convicted of DUI's

Over 90 % of Fatal DUI crashes involve Drivers who've not been convicted of DUI's,
Efforts are underway in the United States to
increase the use of breath-alcohol ignition
interlocks among convicted DWI offenders, both
through passage of stronger state laws that will
require them for first-time offenders, and through
efforts to work within the criminal justice system
to maximize their adoption
(http://www.madd.org/Drunk-Driving/Drunk-
Driving/Campaign-to-Eliminate-Drunk-
Driving.aspx).
Even if such efforts are successful, they would
only partially solve the problem of alcoholimpaired
drivers. That is because a large
proportion of the alcohol-impaired fatal crashes
that occur every year involve drivers with no
prior DWI convictions. In 2006 only 7 percent
of drivers in fatal crashes with BACs 0.08 g/dL
or higher had previous alcohol-impaired driving
convictions on their records for the prior 3 years
(IIHS, 2008).