Rep. Cindy Evans introduces a resolution that looks at how much marijuana a driver can safely consume before getting behind the wheel.

Evans said, “Impaired driving is impaired driving and we have laws in the books for driving under the influence of alcohol, so why not under the influence of marijuana?”

the resolution asks the Department of Health to study the issue and establish a threshold and testing protocol that would determine whether someone is safe enough to drive after using marijuana.

“Medical marijuana is possibly a precursor to legalization and we as a society need to determine the consequences of having more marijuana in our community,” Evans said.

But DOH opposes the resolution saying it doesn’t have the capacity to study the complicated question, especially since it doesn’t include funding.

States including Colorado, Montana and Washington have laws specifying how much marijuana in the blood stream is acceptable while driving, but they set different standards and there’s no federal rule.

A Hawaii toxicologist says even if the Aloha State sets a limit, you need to draw blood to determine if a driver is stoned at the moment.

“A urine level wouldn’t be adequate,” said Scientific Director of Toxicology Carl Linden. “They would have to get a blood level because the blood is the only way to determine under the influence of a drug. I feel the pain of the DOH. It’s not easy but I can see it will have to be addressed in my opinion.

The House Committee on Transportation passed the resolution Monday and will now move on to the Committee on Health.

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