MARION (WSIL) --- Marion Police Chief David Fitts never thought he'd have to enforce laws about legalized cannabis. "Times are changing so we have to adapt and change with it."

Police departments across Illinois had six months to learn about the adult-use cannabis law after governor JB Pritzker signed the bill into law last year.

Fitts and a group of officers received training about the new law in Carbondale on January 9. They learned the basics: who can buy it, who can sell it, where you can use it and how you can transport it.

"Since then, myself and the assistant chief have created an outline, and we are now doing in-house training to our people," Fitts said.

But questions still linger, Fitts says, about field sobriety testing and marijuana DUIs. Fitts is hoping that there will be equipment available to properly conduct those tests.

"I have a feeling that they're going to be very expensive, just my guess," Fitts said.

Governor Pritzker also signed a bill that pardoned thousands of low-level marijuana offenders in Illinois. Fitts says his department is still working on expunging more cases in Marion, calling it time-consuming.

"It's taking away from other things we need to be doing, but that's the order," Fitts said. "We'll get it done as quick as we can."

Some police departments in Illinois have hired drug recognition experts while others are using cotton swabs for sobriety tests. Fitts says those methods aren't being practiced in his department.

"We want to wait and see what else is out there and what the state's attorney and courts recommend," Fitts said.