The American Automobile Association (AAA) examined drug tests and fatal crashes in Washington State, which legalized marijuana for recreational use in December 2012. The report is entitled, Fatal Road Crashes Involving Marijuana Double After State Legalizes Drug. From the AAA NewsRoom:
WASHINGTON, D.C. (May 10, 2016) – Fatal crashes involving drivers who recently used marijuana doubled in Washington after the state legalized the drug, according to the latest research by the AAA Foundation for Traffic Safety. New research also shows that legal limits for marijuana and driving are arbitrary and unsupported by science, which could result in unsafe motorists going free and others being wrongfully convicted for impaired driving.