Research Report Resources » Enforcement » Impaired Driving » Prevalence of Marijuana Use Among Drivers in Fatal Crashes: Washington, 2010-2014

Prevalence of Marijuana Use Among Drivers in Fatal Crashes: Washington, 2010-2014

Description:

“The purpose of this study was to quantify the prevalence of marijuana involvement in fatal
crashes in the state of Washington in years 2010 – 2014 and to investigate whether the
prevalence changed after Washington Initiative 502, which legalized recreational use of
marijuana for adults aged 21 years and older and also created a new per se limit for driving
under the influence of marijuana, took effect on 6 December 2012.”