Federal serious violation
CDL DUI / Controlled Substance Defense
A CDL DUI is a major offense with a one-year minimum disqualification — and a lifetime ban is possible for repeat or transport-related offenses.
What this charge means for your CDL
CDL holders face a lower 0.04 BAC threshold and are subject to disqualification even for a DUI in a personal vehicle. A first major offense brings a minimum one-year disqualification; transporting hazardous materials raises it to three years.
Potential consequences
- Minimum 1-year disqualification (3 years with HazMat)
- Lifetime disqualification possible for a second major offense
- Criminal record and severe employment impact
How these cases are defended
- Challenge the stop, testing procedures, and chemical analysis
- Examine BAC margin against the 0.04 commercial threshold
- Protect against refusal-based disqualification where defensible
Do not just pay this ticket. Paying is a guilty plea that can lock in a conviction on your CDL record. Talk to an attorney before your deadline.
Related CDL defense
Laws vary by state and the facts of your case matter. This page is general information, not legal advice. See our serious violations guide for the federal framework.
Answers for drivers
DUI / Controlled Substance: common questions
Does a DUI in my personal car affect my CDL?+
Yes. A DUI in any vehicle can disqualify your CDL. The consequences reach your commercial license even when you were off duty.