Are Commercial DUIs More Serious Than Regular DUIs?

 Posted on September 08, 2026 in Commercial DUI

A DUI is a serious charge for any driver. For someone who holds a commercial driver's license (CDL), it can threaten their career. While there are many similarities between regular and commercial DUIs, CDL holders face stricter alcohol rules and extra licensing penalties.

If you drive for a living and you are facing a DUI charge in 2026, an Upper Marlboro, MD DUI defense attorney can explain what defense is available.

Is the Criminal Penalty Different for a Commercial DUI in Maryland?

Maryland's DUI law applies whether a person is driving a personal car or a commercial vehicle. This means the criminal DUI charge can be the same. CDL holders can also face extra penalties involving their commercial driving privileges.

Under Maryland Transportation Code Section 21-902 makes it an offense to drive while impaired by or under the influence of alcohol or drugs, no matter the reason for driving. A first DUI offense can result in up to one year in jail, a fine of up to $1,200, or both.

Commercial drivers also face lower blood alcohol limits than regular drivers. CDL penalties can apply in addition to the criminal penalties.

What Blood Alcohol Level Counts as a Commercial DUI?

For regular non-commercial drivers, a blood alcohol concentration (BAC) of 0.08 percent is the legal limit.  Commercial drivers face a lower limit when operating a commercial vehicle.  For a driver operating a commercial motor vehicle, federal rule 49 CFR 382.201 ets the limit at 0.04 percent.

A CDL holder can also face penalties for a DUI that happens in a personal vehicle. This means a commercial driver’s license can be affected even when the driver was off the clock.

How Does a DUI Affect a Commercial Driver's License in Maryland?

A first DUI-related offense can prevent a driver from using a CDL for one year. If the driver was carrying hazardous materials at the time, the penalty increases to three years. A second qualifying offense can lead to losing a CDL for life. In some cases, a driver can apply to get CDL privileges back after 10 years if certain conditions are met.

These CDL penalties can apply even if the offense happened in a personal vehicle. A commercial driver also cannot use a restricted or hardship CDL to keep working during the disqualification period. In Maryland, CDL holders must switch to a regular driver's license before taking part in the ignition interlock program. This means an ignition interlock does not let someone keep driving a commercial vehicle.

Refusing a breath or other chemical test can also lead to CDL penalties. A first refusal can result in a one-year CDL disqualification. A conviction for driving under the influence of certain drugs can also affect a commercial driver's license.

What Are the Job Consequences of a Commercial DUI in Maryland?

The license disqualification is only one aspect of a commercial DUI. Employers can also have their own rules about DUI arrests and convictions, but many carriers have zero-tolerance policies for DUI charges. A driver could be removed from driving duties while a case is pending, and a conviction can lead to job loss. A DUI record can also make it harder to find commercial driving work later.

What Should You Do After a Commercial DUI Arrest in Maryland?

Timing is extremely important for CDL holders charged with DUI, even more so than for regular DUI charges.

Two separate cases run at once in a commercial DUI charge. There is the criminal charge in court and the administrative action through the Motor Vehicle Administration. To give yourself the best protection for your CDL and your case, take the following steps:

• Request an MVA hearing within 10 days of the Order of Suspension if you want the suspension stayed until the hearing. A hearing can still be requested within 30 days, but a later request does not extend the temporary license.

• Get in contact with a criminal defense attorney with experience with commercial DUI as soon as possible.

• Do not assume that reducing the criminal charge will automatically protect your CDL. Under current Maryland law, the criminal case and the MVA process are separate, so discuss both with your attorney.

An attorney can review the traffic stop, chemical testing, and other evidence for problems that could affect the case. They can also help you address the separate license issues through the MVA.

Call a Rockville, MD DUI Defense Attorney Today

A commercial DUI is damaging to both your criminal record and your livelihood. Your best defense is experienced, professional legal counsel to help you through your case.

Our firm brings more than 30 years of combined experience to these cases. We are proud advocates for the Hispanic community on the local and national issues that affect Latin Americans and immigrants.

Our Rockville, MD criminal defense lawyers offer free consultations. Call Arrested for a DUI, LLC at 301-479-5466 today.

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