The federal framework
Serious CDL Violations & Disqualification
The offenses that can take a commercial driver off the road — explained in plain English for working truckers.
What is a “serious traffic violation”?
For CDL holders, “serious traffic violation” is not a casual phrase — it is a defined federal category. These offenses are tracked across state lines and counted toward disqualification of your commercial driver's license. A ticket that would be a minor nuisance for a four-wheel driver can threaten your career.
How disqualification stacks up
The federal rules use simple counting math. The danger is how quickly two ordinary-looking tickets can combine:
- Two serious violations in 3 years: minimum 60-day disqualification.
- Three serious violations in 3 years: minimum 120-day disqualification.
- Violations are counted by the date of the offense, not the conviction date.
- Major offenses (DUI, refusal, hit-and-run) carry a separate one-year minimum on a first offense.
Examples of serious violations
The core federal list of serious traffic violations includes:
Excessive speeding
Driving 15 mph or more over the posted speed limit.
Reckless driving
Operating with willful or wanton disregard for safety.
Improper or erratic lane changes
Unsafe, weaving, or improper lane movements.
Following too closely
Failing to keep a safe distance behind another vehicle.
Traffic offense connected to a fatal accident
Any traffic violation arising in connection with a fatality.
Driving a CMV without a CDL
Operating a commercial motor vehicle without holding a CDL.
Driving without the CDL in possession
Operating a CMV without your CDL physically present.
Wrong class or missing endorsement
Driving without the proper class of license or required endorsement.
Texting while driving
Texting while operating a commercial motor vehicle.
Using a hand-held mobile phone
Holding and using a mobile telephone while driving a CMV.
Railroad crossings and out-of-service orders
Two categories carry their own, even harsher penalty tracks. Railroad-grade crossing violations bring a mandatory disqualification starting at 60 days for a first offense. Violating an out-of-service order starts at 180 days. These do not follow the two-and-three counting rule — a single conviction triggers mandatory time off the road.
Why fast defense matters
Because convictions cannot be masked and the counting windows are unforgiving, the time to act is before a ticket becomes a conviction. Getting one serious violation reduced or dismissed can keep you under the threshold that triggers disqualification. Explore our CDL defense services or check the speed trap database for the corridors where these tickets are most common.
Disclaimer
Laws vary by state and the facts of your case matter. CDL consequences may involve both federal and state rules. This page is general information, not legal advice.
Answers for drivers
Serious violations: common questions
What is a serious traffic violation for a CDL holder?+
Federal regulations define a specific list of serious traffic violations including 15-over speeding, reckless driving, improper or erratic lane changes, following too closely, texting, hand-held phone use, and traffic offenses connected to a fatal accident.
How many serious violations cause disqualification?+
Two serious violations within three years lead to at least a 60-day disqualification. Three within three years lead to at least 120 days. The violations are counted by offense date.
Do violations in my personal vehicle count?+
They can. Some serious violations apply when operating any vehicle, and major offenses like DUI affect your CDL even if committed in a personal car. State rules vary, so get advice on your specific situation.
Can I avoid a conviction with traffic school?+
Generally no. Federal law prohibits masking CDL convictions through diversion or traffic school. The reliable path is to fight the citation or negotiate a reduction before it becomes a conviction.
Do not ignore the citation.
A regular traffic ticket can become a career problem for a CDL driver. Fast response matters.