June 22, 2017|Volume 52, Number 4

Cover story

High claims Legalizing recreational marijuana is linked to increased crashes

Collision claim rates have increased 3 percent in Colorado, Oregon and Washington, after recreational marijuana use was legalized in those states.


Status Report, published periodically, is a newsletter covering research and topics in the highway safety field. New issues are published in their entirety online and are available in print via subscription. To subscribe, email statusreport@iihs.org.

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Recent issues

May 25, 2017 |Volume 52, Number 3

On the road againHigher driver death rate is a downside of economic recovery

The risk of dying in a crash in a late-model vehicle has gone up slightly because of the stronger economy. A new study predicts traffic deaths will fall only slightly over the coming years, given current economic forecasts.

Summer road trips mean more traffic deaths

Summer and early fall are the most dangerous times of the year on the nation's roads. Fatalities also are higher on weekends and certain holidays.

April 12, 2017 |Volume 52, Number 2

Smart picks for teen driversIIHS updates criteria for recommended used vehicles

The Institute's latest list of recommended used vehicles relies on updated criteria to help parents find safe and affordable options for the new drivers in their families.

Progress is slow on alcohol impairment among pedestrians, bicyclists

The percentage of fatally injured pedestrians and bicyclists impaired by alcohol has fallen over the decades, but not as dramatically as the percentage of impaired drivers.

Lund talks truck safety at Senate subcommittee hearing

IIHS President Adrian Lund told a Senate panel that capping truck speeds and adopting crash avoidance technologies could reduce large truck crashes.

February 1, 2017 |Volume 52, Number 1

Near missTwo all-electric cars fall short of earning an IIHS safety award

The Tesla Model S and the BMW i3 fall short of meeting IIHS awards criteria, but two plug-in hybrids earn the 2017 Top Safety Pick+ award.

Regulators finalize noise requirement for hybrids, electric vehicles

Manufacturers have until late 2019 to equip normally quiet hybrid and electric vehicles with noise-making devices to help protect pedestrians.

Older driver road tests appear to cut crashes in Illinois but not New Hampshire

An Illinois requirement that older drivers pass a road test at each renewal has reduced insurance claim rates, but a now-repealed road-test requirement in New Hampshire didn't.

Requiring treatment for interlock violators reduces re-arrest rates

Alcohol-impaired driving offenders are less likely to reoffend after their interlocks are removed if they have been referred for treatment, a recent study found.