Are Field Sobriety Tests Reliable for Illinois Cannabis DUI Cases?

Jul 30, 2026

Are Field Sobriety Tests Reliable for Illinois Cannabis DUI Cases? Attorney Joshua Boardman from Combs Waterkotte discusses everything you need to know about Illinois DUI criminal charges, including first-time DUI, second DUI, Illinois DUI laws, DUI defense strategies, CDL DUI charges, and more.

Combs Waterkotte is a leading DUI defense law firm serving Illinois and Missouri. Our Illinois defense attorneys will fight for your freedom and rights. If you are facing DUI charges in Chicago or anywhere else in Illinois, we can help. Call us at (312) 500-HELP 24 hours a day, 7 days a week.

Interview Transcript

Scott Michael Dunn: Are field sobriety tests reliable in Illinois? For marijuana use of course.

Joshua Boardman: For marijuana use, they can still try to glean circumstantial evidence from field sobriety testing. So, they’re still looking for signs of impairment whether, you know, that’s the inability to walk a straight line or reverse alphabet or number systems or things like that. I don’t know that there’s a yes or no answer to your question, but it can help build a case based on circumstantial evidence.

Dunn: I just wonder if they do it like a comedy routine.

Boardman: Yes, I don’t know. How many open chip bags are in your passenger seat?

Dunn: How much are they laughing? They’re probably on marijuana.

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