Every commercial driver on Highway 99 or I-5 must meet federal standards before a trucking company puts them behind the wheel. CDL violations turn up in truck accident cases regularly, whether an expired license, a lapsed medical certificate, or a disqualifying offense that went unchecked.
At the Law Offices of Mickey Fine, we have spent more than 30 years on Kern County injury claims. Truck driver qualification requirements exist so companies cannot put an unqualified driver on the road, and a failure to meet them is one of the clearest ways to show a company knew or should have known.
Key Takeaways:
- A commercial driver's license violation can include an expired credential, a lapsed medical certificate, or a disqualifying offense like a prior DUI.
- Federal law requires a driver qualification file for every CDL driver, covering employment history, medical certification, and driving record.
- Federal law places an ongoing duty on carriers to check and confirm their drivers meet every qualification standard before dispatch.
- A qualification failure that contributed to a crash can pull the trucking company itself into the case alongside the driver.
- CDL violations often surface through records that must be specifically requested, rather than information a trucking company volunteers on its own.
What Counts as a CDL Violation?

A commercial driver's license violation covers more ground than most people assume it does. An expired license or an expired medical certificate are the most straightforward examples, since federal law requires both to remain current for a driver to legally operate a commercial vehicle at all, let alone one hauling a full load through Kern County.
Certain offenses disqualify a driver outright, regardless of whether the license is otherwise valid. Federal rules sort these into two groups that carry very different consequences.
Major offenses under 49 C.F.R. Section 383.51 include driving under the influence, refusing a chemical test, leaving the scene of an accident, and operating a commercial vehicle on a suspended or revoked CDL.
A first major offense carries at least a one-year disqualification, or three years if the driver was hauling hazardous materials in quantities large enough to require warning placards on the trailer. A second major offense carries a lifetime disqualification.
Serious traffic violations are a separate and lighter category, covering things like excessive speeding, reckless driving, improper lane changes, and texting behind the wheel of a commercial vehicle. A second serious violation within three years carries a 60-day disqualification, and a third carries 120 days.
Out-of-service violations found during roadside inspections add another category. A driver placed out of service, whether for their own conduct or the condition of the vehicle, generates a record that becomes part of the carrier's safety history.
A pattern of these violations across multiple stops reads very differently from a single isolated stop. That pattern is the kind of evidence that surfaces in discovery, the phase where each side must hand over relevant records, and in depositions, where witnesses answer questions under oath.
What Makes a Truck Driver Legally Qualified to Be on the Road?
Federal regulations require every motor carrier to keep a complete driver qualification file for each CDL driver, built around a specific list of documents rather than a general sense that the driver seems capable.
That file has to include the driver's employment application, a review of the driving record from every state where the driver held a license in the past three years, and a road test or its equivalent showing the driver can operate the vehicle.
Medical certification is its own requirement layered on top of the license. A driver must pass an exam from a medical examiner listed on the National Registry of Certified Medical Examiners and carry a current certificate, typically valid for up to two years.
A driver operating without a current medical certificate is not legally qualified, regardless of how long they have been driving trucks or how clean the record otherwise looks.
Employment history verification adds another layer. Carriers are required to check a driver's safety performance history with employers going back three years, which is meant to catch a pattern of violations or terminations that a single background check might miss. The three-year lookback is what carries a prior safety record forward, so a termination for safety violations at one carrier is visible to the next one that checks.
A road test, or an equivalent certification showing the driver can safely operate the specific type of vehicle involved, rounds out the file. A valid license alone does not confirm a driver can handle a fully loaded tractor-trailer through the Grapevine or dense Central Valley fog.
The written application itself also has to disclose prior violations and accidents. That gives the carrier a starting point before it ever pulls a formal driving record.
The Employer's Duty to Screen Every Driver Before Dispatch
Trucking companies have a duty to verify their drivers are properly qualified, and federal regulations give that duty specific teeth through the Drug and Alcohol Clearinghouse. Every carrier must run a full query of this federal database before hiring a CDL driver, and an annual query on every driver already employed, to check for unresolved drug or alcohol violations that would legally bar that person from safety-sensitive work.
A driver with an unresolved violation in the Clearinghouse is prohibited from operating a commercial vehicle until completing the return-to-duty process, a set of federally required steps a driver must finish before regaining eligibility for safety-sensitive work. Hiring or keeping that driver on anyway is a violation, whether or not the company ran the query.
Pre-employment screening reports covering a driver's crash and inspection history are also available before a hiring decision. In many cases, the information that would have surfaced a qualification issue already existed and was never pulled.
The Clearinghouse closed a gap that ran for decades, where a driver disqualified by one carrier for a drug or alcohol violation could apply to a new company that had no way of knowing. Carriers previously relied on the driver's own disclosure and whatever a state record happened to show.
When a carrier skips the required query, or does not act on what it finds, the safeguard the rule created does not function.
The duty does not end at hiring. Annual reviews of a driver's motor vehicle record, ongoing medical certification tracking, and continued Clearinghouse monitoring are all part of the employer's continuing obligation, not a one-time box checked during onboarding.
Federal rules go a step further. Under 49 C.F.R. Section 383.37, a carrier must not let a driver operate a commercial vehicle if it knows or reasonably should know the driver is disqualified.
A company that lets these reviews lapse fails the same duty as one that never ran them. A gap of a few months between required checks is enough for a disqualifying issue to go unnoticed until it results in a crash.
When Liability Reaches Beyond the Driver
A crash caused by an unqualified or disqualified driver rarely stays a simple case against the driver alone. An unqualified truck driver accident lawsuit often reaches the company itself, since liability can extend beyond the driver to the company that hired them when the evidence shows the company knew, or should have known, that the driver did not meet legal qualification standards.
This theory is called negligent hiring, a claim that the company was careless in who it put on its payroll and behind the wheel. It becomes negligent entrustment when the claim is that the company handed the keys to someone it should have known was unfit. Neither version requires proving the company acted with bad intent.
It requires showing the company failed to do what federal regulations and ordinary care already required. That might mean skipping a required background check, ignoring a disqualifying result, or never verifying medical certification before dispatch. A company that relied on an incomplete file is not automatically shielded from responsibility because a file exists.
Good faith reliance on a database result has limits as a defense. A company that ran the required Clearinghouse query and got a clean result may argue it did everything the law asked.
That argument weakens if other parts of the driver qualification file were incomplete, outdated, or never assembled. The stronger question is usually whether the carrier's whole hiring and monitoring process held together, not whether one required step was completed.
A documented qualification failure changes what a case is about. Instead of a single moment of driver error, the question becomes whether a required process was followed at all, and that is a question the carrier has to answer with its own records.
How Do CDL Violations Surface in a Truck Accident Case?
Qualification failures rarely surface on their own. Driver qualification files, Clearinghouse records, and prior employer verifications are internal company documents, and none of them are produced automatically after a crash. Uncovering a CDL violation means requesting each one specifically rather than working from a general assurance that the driver was vetted.
Cross-referencing these documents against the driver's actual history is often where the gap shows. A driving record listing a prior DUI that never appears in the employer's own file, or a medical certificate that expired months before the crash, is the kind of mismatch that reframes a case.
Requesting these records early matters. Some documentation is retained for only a limited period before routine deletion, and a formal preservation letter can keep records from disappearing once litigation becomes likely.
Depositions of hiring managers and safety directors often expose the gap between a company's written policy and what actually happened in practice. A safety manual describing a thorough vetting process means very little if the person responsible for actually running it cannot explain, under oath, why a specific driver's file was missing a required document or why a flagged result was never followed up on before the crash.

FAQs: CDL Violations
How would I know if the driver in my crash had a CDL violation?
You typically would not know without requesting the driver's qualification file and related records. Qualification documents are not part of a standard police report and are not among the records exchanged at the scene.
Does a disqualifying offense from years ago still matter?
Yes, potentially. A prior disqualifying offense that a carrier failed to catch during hiring, or continued to ignore afterward, can support a claim that the company was negligent, regardless of how much time had passed since the original offense occurred and regardless of whether the driver's more recent record looked clean.
Can the driver's employer be liable even if the driver had a valid CDL at the time of the crash?
Yes. A technically valid license does not rule out other qualification failures, such as a lapsed medical certificate, an unresolved Clearinghouse violation, or a pattern of safety issues the employer should have caught during its own required review process well before the crash occurred.
What if the trucking company says it followed all the required checks?
The documents settle it. A complete file shows the pre-employment Clearinghouse query and a three-year employment history check covering every state where the driver was licensed. A file missing either step does not support the claim, regardless of what the company believed it had done.
Is a driver qualification file considered a fully public record?
No. Unlike some inspection data, driver qualification files are maintained privately by the employer and typically require a subpoena, a court order compelling the company to produce them, once a case has been filed.
How long do trucking companies have to keep these driver qualification records?
Federal rules generally require these files to be kept for the length of the driver's employment plus three years afterward, though related records like drug and alcohol testing documentation follow their own separate retention schedule.
Talk to a Bakersfield Truck Accident Attorney About the Driver's Record
A truck accident claim built only around the moments before impact misses half the picture. Our Bakersfield truck accident lawyer investigate whether the trucking company hired an unqualified driver, pulling qualification files, Clearinghouse records, and employment history.
That work shows whether a crash was genuinely unforeseeable or the result of a hiring process that skipped steps federal law requires.
Call the Law Offices of Mickey Fine at (661) 333-3333 for a free consultation. Mickey Fine personally reviews every case, and you pay nothing unless we recover compensation for you.