Can You Lose Your CDL After a DUI in Illinois?

 Posted on April 09, 2026 in DUI

You can lose your CDL after a DUI in Illinois. Under 625 ILCS 5/6-514, Illinois law sets the legal blood alcohol limit for CDL holders operating a commercial vehicle at just 0.04 percent. That is half the limit that applies to everyone else. Even a DUI in your personal car can cost you your CDL. For most commercial drivers, losing a CDL means losing their livelihood. If you are a CDL holder facing a DUI charge in 2026, our Will County, IL DUI defense lawyer can offer experienced legal representation.

What Happens to Your CDL After a First DUI Offense in Illinois?

A first DUI offense as a CDL holder results in a mandatory one-year CDL disqualification. This means you cannot legally drive any commercial motor vehicle for 12 months. The disqualification is automatic and mandatory. There is no hardship license or restricted driving permit available for commercial driving during this period.

If you were transporting hazardous materials at the time of the offense, the disqualification jumps to three years, even for a first offense. That extended penalty applies regardless of how minor the situation might seem in other ways.

During the disqualification period, you may still be able to drive a personal vehicle depending on the outcome of your case. But your ability to work as a commercial driver will be completely suspended.

What Happens to Your CDL After a Second DUI in Illinois?

A second DUI conviction means a lifetime CDL disqualification. This is not a temporary suspension. It is a permanent ban on commercial driving under Illinois law. Illinois does allow some drivers to petition for reinstatement after 10 years, but only if they complete an approved rehabilitation program and can show a clean driving history. That reinstatement is not guaranteed.

For most professional drivers, a second DUI is effectively a permanent end to their career in commercial transportation. This is why fighting every DUI charge, even a first one, is so important. The stakes are simply too high to leave anything on the table.

What Happens if You Refuse a Breath or Blood Test During a DUI Stop?

Refusing a chemical test does not protect you. In fact, it can sometimes make things worse. Under the Illinois implied consent law, CDL holders who refuse a breath, blood, or urine test can face the same CDL disqualification penalties as a DUI conviction. A first refusal means a one-year CDL disqualification. A second refusal means a lifetime ban.

Refusing a test also triggers an automatic suspension of your regular driving privileges, which can complicate your ability to drive any vehicle while your case is pending. Talk to an attorney before making any decisions about testing during a traffic stop.

Does a DUI in a Personal Vehicle Affect Your CDL?

If you are convicted of DUI in your personal car under 625 ILCS 5/11-501, that conviction is treated as a major offense for CDL purposes. You will face the same one-year disqualification as if the DUI happened in a commercial vehicle.

What Are the Best Ways To Fight a DUI Charge as a CDL Holder in Illinois?

There are real defenses available in DUI cases, and fighting the charge from day one gives you the best chance of protecting your CDL. Your attorney will look at every part of the stop and arrest, including whether:

• The officer had a valid reason to pull you over.

• The field sobriety tests were administered correctly.

• The breathalyzer was properly calibrated and maintained.

• Your rights were violated at any point during the stop.

Even small errors in how a DUI stop was handled can lead to evidence being thrown out. If the evidence against you is weakened or suppressed, the charge may be reduced or dismissed entirely. The goal is to reach an outcome that does not trigger a CDL disqualification.

Schedule a Free Consultation With Our Joliet, IL CDL Drunk Driving Arrest Defense Attorney

Attorney Eric J. Blatti is local to the Joliet area and knows the Will County court system well. Having worked as a public defender, he built strong relationships with judges and attorneys throughout the area that help him navigate the legal process effectively for his clients. He knows how these cases move through the courts and how to build the strongest possible defense for CDL holders facing DUI charges.

Call Law Office of Eric J. Blatti, P.C. at 815-744-2500 today to speak with a Will County, IL DUI defense lawyer before time runs out on your options.