Can You Be Charged with DUI in Illinois for Using Synthetic Cannabinoids Like K2 or Spice?

Law Offices of David L. Freidberg, P.C.

Synthetic cannabinoids like K2 and Spice have become increasingly common in Chicago and across Illinois. These substances are often marketed as legal, but in reality, they’re far from harmless — especially when it comes to driving under the influence. If police believe you’re impaired by synthetic drugs while operating a vehicle, you can absolutely be charged with DUI under Illinois law.

This article explores how these charges arise, what Illinois statutes apply, and what to expect if you’re arrested for a synthetic drug DUI in Chicago. We’ll also cover the penalties, trial process, possible defenses, and why it’s critical to have an experienced criminal defense attorney by your side.


Understanding Synthetic Cannabinoids and Illinois Law

Synthetic cannabinoids are man-made chemicals designed to mimic the effects of THC, the psychoactive compound in marijuana. K2, Spice, and similar products are often sprayed onto plant matter and smoked, or sold in liquid form for vaping. While they may have been legal in the past, Illinois now classifies many synthetic cannabinoids as controlled substances under the Illinois Controlled Substances Act (720 ILCS 570).

Once these substances were added to the controlled substances list, it became illegal to possess or use them. But the bigger concern is how they affect a person’s behavior and ability to operate a vehicle. Even though these drugs don’t show up on most traditional drug tests, they can cause confusion, paranoia, hallucinations, and erratic behavior — which is precisely why Illinois law allows police to arrest drivers who appear impaired, even without a confirmed drug in their system.

Under 625 ILCS 5/11-501(a), a person is guilty of DUI if they are driving while under the influence of alcohol, any intoxicating compound, or any combination of substances that render them incapable of driving safely. This includes synthetic cannabinoids.


How DUI Charges Based on Synthetic Cannabinoids Occur in Chicago

In many cases, the arrest begins with a routine traffic stop. You might be pulled over for drifting between lanes, speeding, or failing to signal. Once stopped, the officer will assess your behavior and appearance. If they believe you’re impaired but you pass a breath test, they’ll suspect drugs.

Synthetic cannabinoids don’t produce a consistent or predictable high. You may be overly aggressive, anxious, dazed, or incoherent. These are the behaviors officers will focus on when deciding whether to initiate a DUI arrest.

In Chicago, police often call in a Drug Recognition Expert (DRE) to evaluate the driver. DREs are trained to identify symptoms of drug impairment, even if no chemical test confirms it. They’ll ask questions, check vital signs, and monitor your coordination and response time. Based on these observations, they may recommend arrest — even if no drugs are physically found or tested.

This is where synthetic drug DUIs become dangerous legally. You’re facing the same penalties as a traditional DUI, but with far more room for subjective judgment by the arresting officer or DRE.


Penalties for Synthetic Cannabinoid DUI in Illinois

In Illinois, a first-time DUI offense is generally classified as a Class A misdemeanor. This means:

  • Up to 364 days in jail
  • Fines up to $2,500
  • Mandatory drug education or counseling
  • A suspended driver’s license
  • Court supervision or probation

However, your charge can be enhanced to a felony (Aggravated DUI) under 625 ILCS 5/11-501(d) if:

  • It’s your third or subsequent DUI offense
  • There was a child passenger
  • Someone was seriously injured or killed
  • You were driving without a license or insurance

Felony DUI charges can range from Class 4 to Class X felonies, depending on the facts. Conviction can result in years in prison, long-term license revocation, and permanent felony status on your criminal record.

Even a misdemeanor DUI will have lasting consequences. It will show up in background checks, can lead to employment issues, and limits eligibility for housing, professional licenses, and other life opportunities.


DUI Investigations Without a Positive Drug Test

One of the biggest misconceptions about DUI charges involving synthetic drugs is the belief that a negative drug test means you can’t be convicted. That’s simply not true in Illinois.

Illinois law does not require a positive drug test to charge or convict you of DUI. If the officer has probable cause to believe you were impaired based on your behavior, driving pattern, and field sobriety performance, that may be enough for the state to move forward with the case.

The prosecution may rely heavily on:

  • Police body camera or dashcam footage
  • Field sobriety test results
  • Testimony from the arresting officer
  • DRE evaluations
  • Any substances found in the car (even if not confirmed by a lab)

It’s worth noting that field sobriety tests — like the walk-and-turn or one-leg stand — are difficult for even sober individuals to complete, especially when administered on the roadside under stress. This creates significant room for error, which a skilled defense attorney can use in your favor.


Fighting a Synthetic Drug DUI Charge in Court

Once you’re arrested, you’ll be brought before a judge for arraignment and have the opportunity to enter a plea. From there, your attorney will begin building your defense, gathering evidence, and possibly filing motions to suppress unlawfully obtained evidence.

Some of the most effective DUI defenses in synthetic cannabinoid cases include:

  • Lack of probable cause for the traffic stop or arrest
  • Improper field sobriety test administration
  • Challenging the reliability of DRE testimony
  • Medical conditions that mimic drug impairment
  • No evidence of actual drug consumption or physical possession
  • Insufficient evidence to prove impairment beyond a reasonable doubt

In cases involving no positive drug test, the burden is entirely on the prosecution to convince the judge or jury that your driving and behavior conclusively showed drug-induced impairment.

Even before trial, a good attorney may negotiate for dismissal or a reduced charge, especially if the evidence is weak. For first-time offenders, there may be diversion programs or court supervision options available, but only if the right arguments are made at the right time.


You should never try to handle a DUI case on your own — especially one involving synthetic cannabinoids. These cases are complex, the science is often questionable, and the law leaves a great deal of room for interpretation.

An experienced DUI defense attorney in Chicago understands how to attack the prosecution’s assumptions and prevent bad evidence from being used against you. Your attorney will protect your rights during every phase, from the initial hearing to the final resolution, and give you the best possible chance at keeping your record clean and avoiding jail time.

Without a lawyer, you may unknowingly forfeit legal defenses, miss deadlines, or accept a plea deal that’s far worse than what you could’ve achieved with proper representation.


Why The Law Offices of David L. Freidberg Is the Right Choice

If you’re facing DUI charges in Chicago involving synthetic cannabinoids, you’re in serious legal trouble — but you’re not without options. The Law Offices of David L. Freidberg has decades of experience fighting DUI charges across Cook County and surrounding areas. We understand how to handle cases involving K2, Spice, and other synthetic substances, and we know how to challenge flawed police work, unreliable evaluations, and weak testimony.

Our legal team will act immediately to protect your driver’s license, build your defense, and fight for the best outcome — whether that means reduced charges, case dismissal, or trial victory. Don’t wait to get help.

Call Now – The Law Offices of David L. Freidberg Is Ready to Help

If you were arrested in Chicago for DUI, protect your future by contacting The Law Offices of David L. Freidberg. We have decades of experience handling DUI cases in Illinois. Our firm is available 24/7 to provide the legal defense you deserve.

Contact us today at (312) 560-7100 or toll-free at (800) 803-1442 for a free consultation. We’re available 24/7 to serve clients throughout Illinois, Cook County, DuPage County, Will County, and Lake County.

Contact Us

  1. 1 Available 24/7
  2. 2 Free Consultation
  3. 3 Effective and Persuasive Defense
Fill out the contact form or call us at (312) 560-7100 or (800) 803-1442 to schedule your free consultation.

Leave Us a Message