A statewide commission, tasked with determining the legal driving limit for marijuana, decided the state shouldn’t have one.

That doesn’t mean you can get as high as you want and drive, impaired driving is still illegal. The conclusion just states a THC blood level test is not the most effective way to go.

“Obviously we don’t want anybody who is impaired driving,” says Dr. Norbert Kaminski, Director of the Institute for Integrative Toxicology, “I want to make sure that is very clear.”

Kaminski is on the Impaired Driving Safety Commission and in the past year they studied the best way to limit marijuana intoxication and driving. A blood level test is not the answer, they say.

“There’s a very poor correlation between blood levels of THC and whether somebody is or is not impaired,” says Kaminski.

Their numbers say the way THC is metabolized, it is not like alcohol. You can have very little in your blood and still be impaired and vice versa.

“I think the commission was very, very concerned about making sure that people who are impaired don’t drive,” says Kaminski, “And we also don’t want anybody who is not impaired to be charged with impairment.”

Since there’s no breathalyzer test for THC on the roadside and there’s no set legal limit in the state of Michigan, the pressure now falls on police to be more descriptive and more detailed in their notes. They don’t have that legal limit number to fall back on.

“You’re going to have to be able to articulate why you pulled them over because it has to be a valid traffic stop,” says Lt. Darren Green of the Michigan State Police, “You’re still going to have to be able to articulate that you detected the odor of marijuana or some type of intoxicant that they could potential he be under the influence of and then, that brings you to that standardized field sobriety test.”

With all that said, this is just a recommendation, Michigan could still follow six other states and set a limit.

“The governor and the legislature can draw whatever conclusion,” says Kaminski, “And they may decide to set a limit. I don’t know.”