• May 24, 2016

    Alcohol interlocks cut crash deaths

    Laws requiring alcohol interlocks for all drivers convicted of DUI have cut alcohol-involved crash deaths by 15 percent, a University of Pennsylvania study has found.

    Volume 51, Number 5
  • May 12, 2015

    Sobriety checkpoints aren't used enough

    Well-publicized checkpoints are a proven tool to reduce impaired driving, but few law enforcement agencies conduct them regularly, an IIHS survey shows.

    Volume 50, Number 4
  • May 12, 2015

    More drivers use marijuana

    More drivers are testing positive for marijuana and other drugs, but a new study fails to find a link between marijuana use and crashes.

    Volume 50, Number 4
  • March 13, 2014

    Alcohol survey isn't government spying

    IIHS President Adrian Lund responds to the controversy over the National Roadside Survey of Alcohol and Drugged Driving.

    Volume 49, Number 2
  • December 30, 2013

    Alcohol-related crash deaths lag drop in weekend drinking and driving

    The percentage of drivers on the road impaired by alcohol has plunged, yet the percentage of alcohol-impaired drivers involved in fatal crashes has stayed relatively constant. IIHS researchers explore possible reasons for the puzzle.

    Volume 48, Number 10
  • March 14, 2013

    Alcohol monitoring cuts repeat DUIs

    A South Dakota program that uses twice-daily breath tests to keep people sober after alcohol-related arrests has reduced the number of people who reoffend.

    Volume 48, Number 2
  • March 6, 2012

    Interlocks for first-time offenders cut repeat DUIs

    People convicted for the first time of alcohol-impaired driving are less likely to reoffend if they have to install alcohol interlocks on their vehicles, a new study of Washington state's interlock law shows. The finding provides support for requiring the devices for all offenders, not just those with multiple arrests or high blood alcohol concentrations.

  • November 17, 2011

    Race is on to build new interlock

    Developers of advanced in-vehicle detection technology have two years to build a system that reliably determines a driver’s blood alcohol concentration in a third of a second.

    Volume 46, Number 10
  • December 2, 2010

    Drivers admit to risky habits in survey

    Drivers sat texting while driving, speeding and running red lights are dangerous but admit to doing them anyway.

    Volume 45, Number 12
  • June 19, 2010

    DWI offenders choose interlocks

    When the alternative is house arrest, more offenders choose interlocks, a study in New Mexico finds.

    Volume 45, Number 6
  • June 19, 2010

    Drinking falls when alcohol costs more

    Alcohol-impaired driving and other drinking-related problems decline when alcohol costs more, studies of tax policies show.

    Volume 45, Number 6
  • February 6, 2010

    Survey finds fewer impaired drivers

    The latest national roadside survey finds alcohol-impaired driving has continued to decline, with 2.2 percent of drivers having blood alcohol concentrations of 0.08 percent or more.

    Volume 45, Number 1
  • September 17, 2009

    Public supports technology to prevent impaired driving

    People are ready to prevent any driver from starting a vehicle after drinking too much alcohol, even though the technology to do it isn't available yet. In an IIHS survey, people said they like the idea of using advanced technology to stop drunk drivers from operating their vehicles. About 2 of 3 respondents deem this a good or very good idea, assuming the technology is reliable.

  • July 11, 2009

    States expand use of alcohol interlocks

    More states are requiring interlocks for first-time alcohol offenders. Studies have shown interlocks reduce the chances of re-arrest.

    Volume 44, Number 7
  • December 27, 2008

    Higher drinking age saves lives

    An Institute review of the research confirms that the establishment of 21 as the drinking age has reduced teen drinking, impaired driving and crash fatalities.

    Volume 43, Number 11
  • December 27, 2008

    A misguided campaign

    Some groups are advocating for a lower drinking age, saying 21 has pushed college drinking underground. Evidence shows vigorous enforcement of 21 policies is a better approach.

    Volume 43, Number 11
  • July 24, 2008

    Campaign cuts impaired driving

    A crackdown on impaired driving and underage drinking in a West Virginia college town shows what stepped-up enforcement and a media blitz can accomplish.

    Volume 43, Number 6
  • October 13, 2007

    Eliminating DWI would save 9,000 lives

    A new study quantifies the lives that could be saved if there was no impaired driving and looks at how that could be achieved.

    Volume 42, Number 10
  • November 21, 2006

    Road death toll rises

    More people died in motor vehicle crashes on U.S. roads in 2005 than in any year since 1990. Much of the increase can be pinned on motorcycles.

    Volume 41, Number 9
  • September 7, 2006

    DWI isn't just about hard-core offenders

    Hard-core drinking drivers have drawn a lot of attention in recent years, but they aren't the main part of the impaired driving problem.

    Volume 41, Number 7
  • September 7, 2006

    Washington enforces zero tolerance

    An Institute study found 51 percent more arrests of 16-20-year-old drivers for alcohol violations in Washington state after the zero tolerance law took effect in 1994, compared with before.

    Volume 41, Number 7
  • August 6, 2005

    In other highway safety news …

    Washington's belt law withstands a legal challenge; research supports DWI policies; most drivers think they're above average; a final tire pressure monitoring rule is issued.

    Volume 40, Number 7
  • April 2, 2005

    Progress stalls against impaired driving

    In the U.S. and elsewhere, alcohol-impaired driving seems to be leveling off after years of declines.

    Volume 40, Number 4 | Special Issue: alcohol-impaired driving
  • August 1, 2004

    In other highway safety news…

    State legislators have been busy working on laws about safety belts, motorcycle helmets and alcohol-impaired driving.

    Volume 39, Number 7
  • July 3, 2004

    In other highway safety news…

    Minnesota's tough penalties for high-BAC offenders work; Oregon's Supreme Court upholds speed cameras; more cities install red light cameras; rulemaking on headlight glare begins.

    Volume 39, Number 6
  • February 7, 2004

    Many violations never make it to records

    Drivers found guilty of DWI and other traffic violations had the violations withheld from their public records up to half the time, an Institute study shows.

    Volume 39, Number 2
  • September 25, 2003

    Highway safety legislation in the states

    Two states get stronger belt laws, but Pennsylvania lawmakers weaken their state's motorcycle helmet use law.

    Volume 38, Number 9
  • February 8, 2003

    No recent progress on impaired driving

    The percentage of fatally injured drivers who were impaired by alcohol has held steady in recent years. That's one of the trends visible in the latest crash death statistics.

    Volume 38, Number 2
  • February 8, 2003

    Review supports DWI checkpoints

    A review  of 23 studies by the Centers for Disease Control concludes that regular sobriety checkpoints can significantly reduce crashes involving alcohol.

    Volume 38, Number 2
  • January 11, 2003

    Drinking histories of high-BAC drivers

    Fatally injured drivers with BACs of 0.15 percent or higher are more likely than other drivers to have a history of problem drinking. However, not all of them fit that profile.

    Volume 38, Number 1
  • March 16, 2002

    Few states improve highway safety laws

    Little progress was made in the states in 2001 when it comes to passing new highway safety laws and strengthening the ones on the books.

    Volume 37, Number 3
  • June 30, 2001

    Sobriety checkpoints aren’t used enough

    A lack of public pressure and concern over limited resources keeps many states from using sobriety checkpoints, even though they are an effective deterrent.

    Volume 36, Number 6
  • June 30, 2001

    Better DWI detection is needed

    A committee recommends legal and technical changes to improve detection of alcohol impairment.

    Volume 36, Number 6
  • June 30, 2001

    0.08 percent BAC limit shown to work

    A new review of the research on the effects of lowering the legal threshold for impairment to 0.08 percent blood alcohol concentration concludes that the change saves lives.

    Volume 36, Number 6
  • June 30, 2001

    Teens don’t know about zero tolerance

    Many young drivers don't know about the zero-tolerance impaired-driving laws that apply to them. A lack of enforcement may be to blame.

    Volume 36, Number 6
  • December 20, 2000

    Best and worst state traffic safety laws

    For the first time, IIHS has conducted a comprehensive assessment of key traffic safety laws in every state and the District of Columbia. Researchers rated laws on alcohol-impaired driving, young driver licensing, safety belts, child restraints, motorcycle helmets and laws allowing red light cameras.

  • June 19, 1999

    Sobriety checkpoints in Tennessee reduce fatal crashes involving drivers with high BACs

    Volume 34, Number 6
  • October 11, 1997

    Benzodiazepines may increase crash risk among elderly drivers

    Volume 32, Number 8
  • March 21, 1997

    Survey finds fewer drinking drivers on the road

    Fewer drivers on U.S. roads on weekend nights have been drinking, but the proportion of drivers with high blood alcohol concentrations hasn't changed significantly since 1986. These are the major findings of a new nationwide, roadside breath-test survey sponsored by IIHS and the National Highway Traffic Safety Administration.