Page last updated:October 24, 2014
Drunk driving laws in 24 US states

When Mothers Against Drunk Driving (MADD) launched its Campaign to Eliminate Drunk Driving in autumn 2006, one state, New Mexico, had an alloffender ignition interlock law. Since then, 23 states have passed all-offender ignition interlock legislation and drunk driving deaths are down more than 24%. Already in 2014, four states have passed all-offender interlock legislation, eight states have improved legislation by closing loopholes, and four states are still working to pass bills. Most recently, Rhode Island passed legislation S 2231A.

The new law will go into effect on January 1, 2015 and mandates the use of ignition interlock devices for convicted DUI offenders with a blood alcohol concentration at 0.15 or above, repeat DUI offenders and offenders who repeatedly refuse BAC tests. The law also authorises judges to allow first-time offenders to drive to and from work as long as the offender installs an ignition interlock device in their vehicle. It also requires alcohol or drug treatment for offenders at their third DUI offense. Further interlock legislation is still pending in Ohio, New Jersey, North Carolina and Pennsylvania.

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