MSP Reminds People Not to Smoke and Drive

On the day the sale of recreational marijuana became legal in Michigan, state police say a person under the influence of marijuana hit a trooper on I-75 near Detroit. Now, state police are reminding everyone that driving under the influence of alcohol or drugs is illegal.

“We look for signs of intoxication or impairment, and the officers are all trained to recognize those signs,” says Lt. Derrick Carroll, public information officer for the state’s seventh district.

Police then use a standard sobriety test to check the levels. “The test that we have on the side of the road, the oral tester tests for up to 25 monograms of THC level which is quite high,” says Lt. Carroll.

But knowing what levels of marijuana can cause impairment are still a little fuzzy. “The difference between alcohol and marijuana is alcohol’s been studied, and there’s hard scientific data to say okay .08 in Michigan you’re considered under the influence for driving,” says Lt. Carroll. “With marijuana there’s no hard-set numbers.”

That uncertainty is why Frank James says he’s concerned with the law. “What’s the limit, how do you test if somebody is stoned verses someone who is not stoned. I don’t know the answer to that,” says James.

According to the National Institute of Health, marijuana can be detectable in your body for up to thirty days after using the drug. That’s why Jones says the state needs to come up with guidelines.

But until then Jones and Lt. Carroll says getting home safe is the first priority. “If you had it yesterday, there’s no effect on you today, but if you’re hesitant because you’ve smoked it, then you shouldn’t be driving,” says Jones.