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Colorado revisits marijuana DUI standard

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url source: h??p://www.winknews.com/National-World/2012-02-27/Colorado-revisits-marijuana-DUI-standard

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Colorado revisits marijuana DUI standard

DENVER (AP) - Driving while high is illegal in Colorado, but state lawmakers are again entering a hazy debate over how to measure whether medical marijuana patients are impaired behind the wheel.

A bill up for a Senate hearing Monday would say that drivers would be considered impaired if they test positive for 5 nanograms or more of THC, the psychoactive ingredient in marijuana. Problem is that there's little agreement over whether the amount is a fair gauge of whether a driver is impaired.

Current Colorado law says drivers can't be impaired by drugs but does not set a THC limit. Pot activists say impairment and THC levels aren't directly related.

Marijuana activists called the 5-nanogram limit "unfair" because they say patients who use marijuana regularly see a gradual build-up of THC levels, even when sober.

The 5 -nanogram limit "is not supported by the science," argued Michael Elliott of the Medical Marijuana Industry Group, which opposes the bill.

Marijuana activists favor instead an education effort reminding patients they cannot legally drive high.

Last year, a similar DUI standard cleared the House but was defeated in the Senate amid concerns from both parties about the lack of agreement on an acceptable blood-level standard. A nonpartisan study committee that looked at the question during the summer and fall could not agree on what the standard should be.

The Republican sponsor of this year's bill says law enforcement needs a standard to measure impairment.

"It's time we had a clear standard," said Sen. Steve King, R-Grand Junction.

States that have set a legal limit for marijuana have taken different approaches.

Nevada, which allows marijuana use for medical purposes, and Ohio have a limit of 2 nanograms of THC per milliliter for driving. Pennsylvania has a 5 nanogram limit, but unlike Colorado's proposal, it's a state Health Department guideline, which can be introduced in driving violation cases. Twelve states, including Illinois, Arizona, and Rhode Island, have a zero-tolerance policy for driving with any presence of an illegal substance.

According to the National Highway Traffic Safety Administration, peak THC concentrations are present during the act of smoking and they generally fall to less than 5 nanograms within three hours.

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Follow Kristen Wyatt at h??p://www.twitter.com/APkristenwyatt
 

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