DUI for Commercial Drivers (CDL): What You Need to Know
Last updated: March 3, 2026
A DUI/DWI arrest is devastating for any driver — but for CDL holders, the stakes are exponentially higher. Your livelihood depends on your license, and the rules are twice as strict.
- •Commercial drivers are held to a 0.04% BAC limit — half the standard 0.08%
- •This applies when operating a Commercial Motor Vehicle (CMV)
- •You can be charged at 0.08% in your personal vehicle AND face CDL consequences
- •A DUI/DWI in ANY vehicle — personal or commercial — affects your CDL
- •Zero tolerance for any detectable amount of alcohol in some circumstances
- •First offense: 1-year CDL disqualification (3 years if transporting hazmat)
- •Second offense: LIFETIME CDL disqualification
- •Lifetime disqualification may be reduced to 10 years after rehabilitation in some states
- •Refusing a chemical test = same penalties as failing one
- •CDL disqualification is federal (FMCSA) — it applies in ALL states regardless of where arrested
- •You cannot get a 'hardship' CDL or restricted CDL during disqualification
- •Most trucking companies terminate drivers after a DUI arrest — even before conviction
- •Your CDL disqualification shows up on your DAC (Drive-A-Check) report
- •Pre-employment drug and alcohol testing will reveal your history
- •Insurance companies may refuse to cover you, making you unhirable
- •Owner-operators face additional financial devastation: truck payments, insurance, authority fees
- •Some companies have 'second chance' programs — but options are limited during disqualification
- •Hire an attorney who specifically handles CDL-DUI cases — general DUI attorneys may miss CDL-specific issues
- •Request your administrative hearing within your state's deadline — losing your regular license also affects your CDL
- •Explore whether your state allows deferred adjudication — it may prevent the conviction from triggering federal CDL rules
- •Complete all required substance abuse programs promptly
- •After disqualification ends: retake CDL knowledge and skills tests, pass DOT physical, complete return-to-duty drug test
- •Consider SAP (Substance Abuse Professional) evaluation — required by DOT for return to safety-sensitive duty
State-Specific Information
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