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TECHNOLOGY, DISCOVERY & INNOVATION. UPDATED 13 MINUTES AGO.
You are here: Home / Automotive Tech / Link Between Pot and Car Crashes?
Does Driving While High Create More Crashes?
Does Driving While High Create More Crashes?
By Kurtis Lee Like this on Facebook Tweet this Link thison Linkedin Link this on Google Plus
PUBLISHED:
JUNE
24
2017
In states looking to legalize pot, police and politicians often grapple with the same hard question: How will that affect road safety?

The topic has dominated discussions in legislative committee rooms from California to Massachusetts and also on front porches across the country, as activists gathering petition signatures have gone door-to-door trying to sway potential voters in legalization efforts. Now new data may bolster arguments against legalization.

A study released Thursday by a leading insurance research group showed an uptick in collision claims in states that have legalized marijuana.

In the years since recreational pot sales became legal in Colorado, Washington and Oregon, those states saw a 2.7% increase in collision claims, according to the study from the Highway Loss Data Institute. The group used data from insurance claims and not law enforcement records. Legal sales took effect in Colorado in January 2014, followed by Washington that July and Oregon in October 2015.

"It's tricky to say what the exact magnitude of legal marijuana is on this increase," said Matt Moore, senior vice president of the Virginia-based nonprofit. "But it's safe to say that since retail sales have begun, crashes have increased in these states."

The group used neighboring states -- Idaho, Montana, Utah and Wyoming to name a few -- as controls with the states that legalized pot and did before-and-after comparisons. After retail marijuana sales began in Colorado, the increase in collision-claim frequency was 14% higher than in nearby Utah and Wyoming, according to the report. Washington's estimated increase in claim frequency was 6% higher than in Montana and Idaho.

Trying to gauge how high is too high behind the wheel has long perplexed states. Unlike for alcohol, there is no on-scene breathalyzer for marijuana that's widely used, so confirming pot use requires officers take drivers to police stations to administer a blood test. And there's another question: What's a reasonable cutoff?

Some states, such as Colorado and Washington, have established 5 nanograms of THC per milliliter of blood as a clear legal standard for judging whether someone is driving under the influence. THC is a chemical compound in cannabis responsible for its psychological effects.

The study released Thursday already has its critics.

Mason Tvert, a spokesman for the Marijuana Policy Project, a group dedicated to ending marijuana prohibitions, said the report shows "some correlation but not causation."

"In other words, it found a slightly increased risk of collisions in states that have made marijuana legal for adults, but it did not actually look at the causes of collisions and does not show marijuana is to blame for that increase," Tvert said, adding that the group takes seriously the issue of combating driving while high.

"It is important that governments and businesses continue to educate the public about the danger of impaired driving -- whether it is by cannabis, alcohol or other substances -- as well as the laws that prohibit it," he said.

In recent years, some states that legalized pot, such as Colorado, have launched extensive advertising campaigns warning of the dangers marijuana poses to kids and teenagers, and also the risks of driving while high.

Moore said the study is an important step toward equipping states with all the facts as they consider legalizing pot.

"This is a concern and it's a concern worth monitoring and looking at over time," Moore said.

Since 2012, eight states have passed voter-approved ballot measures legalizing the purchase and possession of marijuana for anyone 21 and older. This year several states seeking to rake in tax revenue from pot sales tried to legalize marijuana through legislative action. All the efforts have faltered.

In Rhode Island, state Sen. Josh Miller has led an unsuccessful effort to legalize pot for the last four years. This year, his legalization bill remains stalled in a committee as the session comes to a close later this month. Rhode Island Atty. Gen. Peter F. Kilmartin was among those opposed to legalization, citing, among other things, the need for more research around legalization efforts.

Asked about the study, Miller said he remains undeterred in his efforts.

"The details," he said, "are always more important than the headlines with such studies."

© 2017 Los Angeles Times under contract with NewsEdge/Acquire Media. All rights reserved.
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