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CDL Commercial Driver

How DWI Charges Affect Commercial Driver’s Licenses in Louisiana

March 13, 2025Eric G. Johnson

A DWI charge can be devastating for any driver, but for commercial drivers in Louisiana, the consequences are particularly severe. Commercial Driver’s License (CDL) holders face stricter standards and harsher penalties than regular license holders when charged with driving while intoxicated. These enhanced penalties can threaten not only your driving privileges but your entire livelihood and career.

At John D. & Eric G. Johnson Law Firm, we understand the serious implications DWI charges have for commercial drivers. Our attorneys have extensive experience defending CDL holders throughout Louisiana against DWI charges. We recognize that your professional future depends on maintaining your commercial driving privileges, and we’re committed to providing aggressive defense strategies tailored to your specific situation.

Table of Contents

Toggle
  • Lower BAC Thresholds for Commercial Drivers
  • Implied Consent Laws and Commercial Drivers
  • Additional Consequences Beyond License Disqualification
  • Defending Against DWI Charges as a CDL Holder
  • The Importance of Specialized Legal Representation
  • Contact an Experienced DWI Defense Attorney

Lower BAC Thresholds for Commercial Drivers

Commercial drivers in Louisiana must adhere to stricter blood alcohol concentration (BAC) limits than regular drivers. While the legal limit for most drivers is 0.08%, CDL holders face DWI charges at just 0.04% BAC when operating a commercial vehicle. This lower threshold means commercial drivers can face serious penalties after consuming far less alcohol than would be required for regular drivers to exceed legal limits.

Even a first-time DWI offense while operating a commercial vehicle can result in a one-year CDL disqualification. If you were transporting hazardous materials at the time of the offense, this disqualification period extends to three years. A second DWI offense results in a lifetime CDL disqualification, effectively ending your career as a commercial driver.

What many commercial drivers don’t realize is that these strict standards apply even when they’re operating their personal vehicles. If you receive a DWI in your private vehicle, you’ll still face commercial license disqualification periods, though the BAC threshold is the standard 0.08% in these situations.

Implied Consent Laws and Commercial Drivers

Louisiana’s implied consent laws are particularly important for commercial drivers to understand. By holding a CDL, you’ve already given implied consent to chemical testing if a law enforcement officer suspects you of driving under the influence. Refusing a breathalyzer or other chemical test carries automatic penalties.

For CDL holders, refusing a chemical test results in a one-year disqualification of your commercial driving privileges for a first refusal. A second refusal leads to a lifetime disqualification. These penalties apply even if you’re eventually found not guilty of the DWI charge itself.

According to the Federal Motor Carrier Safety Administration, approximately 2% of commercial vehicle drivers tested positive for alcohol in roadside surveys, highlighting the enforcement focus on this issue in the trucking industry.

Additional Consequences Beyond License Disqualification

The impact of a DWI on a commercial driver extends far beyond the immediate license disqualification. Other serious consequences include:

  • Employment termination, as most trucking companies have zero-tolerance policies regarding DWI convictions
  • Difficulty finding new employment in the transportation industry, as most employers conduct thorough background checks
  • Significantly increased insurance premiums, often making insurance prohibitively expensive
  • Mandatory completion of substance abuse programs before license reinstatement
  • Criminal penalties including possible jail time, fines, and probation
  • Installation of ignition interlock devices in vehicles you operate

These consequences can create a cascade of financial and personal hardships that extend far beyond the initial conviction. Commercial drivers often face devastating professional setbacks that can take years to overcome, if at all.

Defending Against DWI Charges as a CDL Holder

When facing DWI charges as a commercial driver, it’s crucial to mount an aggressive defense immediately. Potential defense strategies may include:

  • Challenging the legality of the traffic stop that led to the DWI investigation
  • Questioning the accuracy of breath, blood, or field sobriety tests
  • Examining whether proper procedures were followed during testing and arrest
  • Investigating equipment calibration and maintenance records
  • Identifying medical conditions or other factors that might have affected test results
  • Negotiating for reduced charges that may have less impact on your CDL status

Each case requires a customized approach based on the specific circumstances and evidence involved. Our attorneys carefully analyze every aspect of your case to identify the most effective defense strategies.

The Importance of Specialized Legal Representation

For commercial drivers, the stakes in DWI cases are exceptionally high. General practice attorneys may not fully understand the specialized regulations governing CDLs or the devastating professional consequences a conviction can have on your career. Working with attorneys experienced in defending commercial drivers provides significant advantages.

Our firm understands both the criminal aspects of DWI defense and the administrative proceedings related to commercial license disqualification. We can represent you in criminal court and at DMV administrative hearings, fighting to protect both your freedom and your professional driving privileges. We’re familiar with the specific challenges commercial drivers face and the best strategies for addressing them.

Contact an Experienced DWI Defense Attorney

If you’re a commercial driver facing DWI charges in Louisiana, taking immediate action is crucial to protecting your career and livelihood. At John D. & Eric G. Johnson Law Firm, we’ve helped numerous CDL holders navigate the complex legal challenges of DWI charges and fight to preserve their professional driving privileges.

Our experienced criminal defense attorneys understand the unique challenges commercial drivers face when charged with DWI offenses. We provide aggressive representation focused on achieving the best possible outcome for your specific situation. Don’t risk your commercial driving career by facing these serious charges alone. For skilled legal assistance with your case, call us at (318) 377-1555 or visit our contact form.

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Attention: While this website provides general information, it does not constitute legal advice
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John D. & Eric G. Johnson Law Firm, LLC
Office: 318-377-1555 | Fax: 318-377-1559
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John D. & Eric G. Johnson Law Firm, LLC
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 Serving the entire State of Louisiana including Minden, Ruston, Monroe, Shreveport, Bossier City, as well as Caddo, Webster, and Ouachita parishes.
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