Commercial drivers in Texas face stricter standards than everyday motorists. A single mistake behind the wheel — even when driving a personal vehicle — can jeopardize a career. One of the most serious risks is a driving while intoxicated (DWI) charge. For holders of a Commercial Driver’s License (CDL), a DWI arrest or conviction can trigger immediate suspensions, lengthy disqualifications, and long-term employment consequences.
This guide explains how a DWI affects CDL holders in Texas, the laws that apply, and what drivers need to know about protecting their livelihood.
Texas CDL Rules and Federal Oversight
CDL holders are governed by both Texas law and federal regulations under the Federal Motor Carrier Safety Administration (FMCSA). Because commercial vehicles carry passengers or heavy cargo, drivers are held to higher safety standards.
- In Texas, the legal blood alcohol concentration (BAC) limit for CDL drivers is 0.04%, half the standard limit of 0.08% for non-commercial drivers.
- A DWI arrest may result in both criminal charges in court and administrative penalties against the CDL through the Texas Department of Public Safety (DPS).
- Even if a driver is stopped in their personal car, a DWI conviction affects their CDL status.
Administrative License Suspension
Texas law requires an automatic license suspension after a DWI arrest if:
- The driver refuses to submit to a breath or blood test (refusal = automatic license revocation under implied consent).
- The driver submits to testing and shows a BAC above 0.04% while operating a commercial vehicle, or above 0.08% in a personal vehicle.
This administrative suspension is separate from any criminal court case. It can disqualify CDL privileges for a set period even before a court date.
Criminal Convictions and CDL Disqualifications
The consequences of a DWI conviction are severe for commercial drivers.
First Offense
- A first-time DWI conviction results in a minimum 1-year CDL disqualification.
- If the driver was transporting hazardous materials, the disqualification increases to 3 years.
Second Offense
- A second DWI conviction — at any time — results in a lifetime CDL disqualification.
- In some cases, drivers may be eligible to reapply after 10 years, but reinstatement is not guaranteed.
Refusal to Test
- Refusing a chemical test carries the same weight as a failed test, leading to CDL disqualification.
CDL Disqualifications Even Without a DWI Conviction
Commercial drivers must also understand that certain situations may affect their CDL even if they are not convicted in criminal court. For example:
- An administrative finding of refusal or BAC above the limit will suspend CDL privileges regardless of trial outcome.
- Some employers follow zero-tolerance policies and terminate drivers based on arrest alone, not just conviction.
This makes it critical for CDL holders to act immediately after a DWI arrest to protect their driving privileges.
Employment and Career Consequences
Beyond the license suspension itself, CDL drivers with a DWI face long-term career challenges:
- Many trucking companies refuse to hire drivers with a DWI on record.
- Insurance carriers may increase premiums or deny coverage for employers with drivers who have DWI histories.
- Federal and state contracts often disqualify drivers with alcohol-related offenses.
For drivers in South Texas — from San Antonio and Boerne to Brownsville and Harlingen — the loss of a CDL often means the loss of a primary source of income.
Things to Know About CDL Suspensions in Texas
CDL Standards Are Stricter
A BAC of 0.04% or higher is enough to disqualify a CDL holder, even when not driving a commercial vehicle.
DWI in a Personal Vehicle Still Counts
Texas law applies DWI penalties to CDL holders even if the arrest occurs in their personal car.
Hazardous Materials Offenses Carry Longer Bans
Transporting hazardous materials at the time of arrest triggers a minimum 3-year suspension for a first offense.
Lifetime Consequences Are Real
Two DWI convictions at any point result in a lifetime CDL ban under Texas and federal rules.
Frequently Asked Questions About CDL Suspensions and DWI
Can I get my CDL back after a DWI?
After a first conviction, a CDL holder must wait at least one year (or three years with hazardous materials) before reapplying. A second conviction often means lifetime disqualification.
What happens if I refuse a breathalyzer with a CDL?
Refusal triggers an automatic administrative suspension under implied consent laws. This disqualification applies even if criminal charges are later dismissed.
Does a DWI in another state affect my Texas CDL?
Yes. CDL suspensions and disqualifications apply nationwide through the FMCSA system. A conviction in another state is reported to Texas DPS and carries the same penalties.
Can my employer fire me for a DWI arrest?
Yes. Many trucking companies use strict safety policies and may terminate drivers upon arrest, even before a conviction.
Final Thoughts On CDL and DWI Implementations
For CDL drivers, the consequences of a DWI extend far beyond fines or jail time. A single mistake can result in losing a commercial license, ending a career, and creating financial hardship. Texas law, combined with federal CDL regulations, enforces some of the strictest penalties in the country.
Understanding these rules helps CDL holders grasp the stakes and highlights the importance of maintaining safe, sober driving practices — both professionally and personally.
