Attorney General Gurbir Grewal told lawmakers legalization would pose challenges for law enforcement.
“How do we assess drugged driving? What’s the metric for it? Do we have enough drug recognition experts to do this job? Do we have to train up our officers on field sobriety testing procedures? Do we have to have more education and prevention efforts?
Grewal says law enforcement is also trying to understand how police dogs will operate because they’re not trained to differentiate between marijuana and other drugs.
He says the State Police has met with counterparts in states that have legalized marijuana to see what’s worked.