Scientists working on test for driving while high; nation’s potheads begin driving even slower

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No, that car hasn't been tailing you all the way home. You're just high.

While some friends of marijuana claim that smoking actually makes them more cautious drivers, cops tend to disagree. Driving under the influence of any drug is illegal, as you might guess. But now that medical marijuana is legal in the flyest of states, cops have to ask themselves an awesome question: how high is too high? 

(Like, say a person went on a first date with their high-school crush, and had the brilliant idea to try edibles for the first time to loosen up, and then offered to drive said crush back to their place, and then couldn't find their way back to said house. Hypothetically speaking, would that person have been too high to drive?)

Clearly, not all stoned driving is created equal, so cops are trying to develop a sort of breathalyzer-equivalent test to determine acceptable limits of highness. Because THC stays in your system for so long, police have relied on blood tests up until this point, which means taking someone into the station. But now, scientists are apparently working on a saliva test that would allow cops to read how high you are, on the spot. Read: Worst. Trip. Ever.

But then, there's that holiest of hippie caveats: medical marijuana. Police are not sure how to deal with it when a high driver has permission to get blazed. "The explosion of medical marijuana patients has led to a lot of drivers sticking the [marijuana] card in law enforcement's face," attorney Sean McAllister said in an interview with Jezebel. "[They say] You can't do anything to me — I'm legal."

So, you know, "Get up, stand up," and all that… but maybe find a better approach when you're high and dealing with a cop. You never know, maybe he has donuts in his car.