If you hold a commercial driver's license (CDL), a DWI carries a layer of consequence that ordinary drivers do not face: your ability to earn a living. Federal and New York rules treat commercial drivers more strictly, and the fallout can reach your CDL even when the arrest had nothing to do with your job.
A lower limit, and a longer reach
When operating a commercial vehicle, the impaired-driving threshold is a BAC of .04, half the .08 that applies to everyone else. And here is what surprises many drivers: a DWI conviction (or a chemical-test refusal) in your personal vehicle, entirely off duty, can still disqualify your CDL. A first such disqualification is typically one year; a second can be for life. Transporting hazardous materials raises the exposure further.
Why these cases need extra care
Because a conviction, or even certain pleas, can end a driving career, the usual calculus changes. A resolution that would be perfectly acceptable for an ordinary driver may be unacceptable for a CDL holder because of the collateral disqualification. That means the defense has to account for the CDL consequences at every step, from the DMV refusal hearing to any plea, not just the criminal exposure.
How it is defended
The core defense is the same, scrutinize the stop, the arrest, and the testing, but with the CDL consequences driving the strategy. Getting experienced counsel involved immediately matters more here than almost anywhere, because early decisions (including whether and how to handle a refusal) can determine whether your commercial license survives.
Figures reflect current New York law (VTL §§1192, 1193, 1809; NY DMV) as of 2026 and are general information, not legal advice. Your exact exposure depends on the facts of your case.