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Trucks parked at the state highway rest stop on Interstate 84 in Willington. Credit: Keith M. Phaneuf / CT Mirror

Yes.

In Connecticut, a commercial driver can have their commercial driver’s license, or CDL, suspended or disqualified after a DUI arrest in any vehicle, even before a conviction.

For CDL holders, a DUI triggers a criminal court case and an administrative action by the Department of Motor Vehicles.

Under Connecticut’s process, the DMV can suspend a CDL if a driver fails or refuses a chemical test, or if test results show an elevated blood alcohol level. In most cases, the suspension takes effect within about 45 days unless the driver requests a DMV hearing, usually within 10 to 15 days.

A BAC of 0.04% — lower than the 0.08% needed by non-commercial drivers for a DUI — while operating a commercial vehicle can lead to disqualification. Refusing a test typically results in a one-year CDL disqualification, longer if hazardous materials are involved.

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Reginald David is the Community Engagement Reporter for CT Mirror. He builds relationships across Connecticut to elevate community voices and deepen public dialogue around local issues. Previously, he was a producer at KCUR 89.3, Kansas City’s NPR station, where he created community-centered programming, led live event coverage for major events like the NFL Draft, the Kansas City Chiefs Super Bowl Parade, and Royals Opening Day, and launched KC Soundcheck, a music series spotlighting local and national artists. Reginald has also hosted special segments, including an in-depth interview with civil rights leader Alvin Brooks and live community coverage on issues like racial segregation and neighborhood development. He began his public media career as an ‘Integrity in News’ intern at WNPR in Hartford.