Driving laws explained: In the medical marijuana age, how high is too high to drive? [View all]
Twelve years after Colorado legalized the use of marijuana for medicinal purposes, more than 85,000 people have been certified by the state health department to use it. Now, there is increasing concern about a rise in traffic accidents caused by people under the influence of marijuana. Between 2006 and 2010, more than 300 fatal accidents involved drivers who tested positive for cannabis, according to the Colorado Department of Highway Safety.
That’s why Republican state Senator Steve King wants Colorado to set a legal limit for marijuana intoxication, somewhat similar to the 0.08 percent blood alcohol limit states put on driving under the influence of alcohol. And in California, Democratic Assemblywoman Norma Torres wants to set a zero-tolerance ban on driving under the influence of any drug, including marijuana.
But bills put forward by both King and Torres have run into opposition from those who say the science around what marijuana does to the body and mind is not conclusive enough to set a legal limit. In Colorado, critics also note that King’s approach would cost the state public defender’s office about $600,000 per year to defend those accused of “drugged driving” charges.
Yet concerns over cannabis intoxication won’t go away. Voters in Colorado and Washington State will decide whether to legalize recreational marijuana use, while a dozen more states are considering legalizing marijuana for medical purposes. In this explainer, Stateline examines the research surrounding marijuana and road safety, and explores why it’s so difficult to say how high is too high to drive.
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