What 383.37(a) means in plain language
FMCSR 383.37(a) holds employers accountable for knowingly permitting someone to operate a commercial motor vehicle when that person lacks a valid CDL or is operating with a suspended or revoked license. This is fundamentally different from a driver-focused citation—it targets the employer's decision-making and oversight.
The regulation assumes that an employer had knowledge (or should have had knowledge) that the driver was unqualified. In practical terms, this means your company either failed to verify your CDL status before putting you behind the wheel, or continued to assign you work despite knowing your license had been suspended or revoked. The citation reflects a breakdown in the hiring, onboarding, or ongoing compliance process at the fleet level.
For a driver who has been cited under this code, it typically signals that an inspection found you operating without the proper licensing. That discovery then generates citations not just for you as the driver, but also against your employer for knowingly allowing the situation to occur.
What our enforcement data actually shows
Across our 13 million+ inspection records, 383.37(a) shows no recorded citations in our database as of April 2026. Over the last 12 months and the last 90 days, we have similarly recorded zero citations for this code. With zero placements out of service and zero total violations logged, the OOS rate stands at 0.0%.
This absence of enforcement data is striking. It suggests one of two things: either this regulation is rarely enforced at the roadside, or violations are being coded differently by inspectors. Either way, if you have received a citation for 383.37(a), you are in a rare category. The silence in our data does not mean the violation is permissible—it means enforcement is uncommon, which makes any citation you have received noteworthy and worth taking seriously.
Who gets cited most
Because our database records zero citations for 383.37(a), we cannot identify state-level or carrier-level concentration. No state appears in the top citations list, and no carrier shows a citation count we can report. This data absence prevents us from telling you which fleets or jurisdictions have faced the most enforcement action under this specific code.
However, the rarity of citations does not mean compliance is optional. Employers across all states and all carrier types remain legally bound by this regulation. If you have been cited, your employer was among the very few flagged for this violation in our inspection history.
How severe is this compared to similar codes
To understand the severity of 383.37(a) in context, we can compare it to related Driver Fitness codes that appear frequently in our records:
383.23(a)(2) — CDL wrong class has generated 50,385 citations with a 98.4% out-of-service rate. This code captures drivers operating a CMV in a class they are not licensed for—a close cousin to 383.37(a) in intent, though focused on the class mismatch rather than employer knowledge.
383.23A2-LCDLN — Operate a CMV without a valid CDL has resulted in 47,123 citations with a 98.6% out-of-service rate. This is the direct driver-side equivalent: the driver is operating without any valid CDL at all. The extremely high OOS rates on both of these reflect how seriously inspectors treat unlicensed operation.
391.41(a) — Physical qualification (general) has 42,270 citations with a 16.2% OOS rate, showing that fitness violations can vary widely in how they are enforced depending on the specific subsection.
The peer codes' near-universal out-of-service rates underscore that CMV operation by unqualified drivers is treated as an immediate safety disqualifier. Even though 383.37(a) is not OOS-eligible itself, the driver conduct it captures (unqualified operation) triggers OOS citations in almost every case.
How to avoid it
As a driver, your responsibility is to maintain a valid, unrevoked CDL and inform your employer immediately if your license status changes. Here are the concrete steps:
-
Verify your CDL status monthly. Check your state's licensing portal or call the DMV before each month begins. If suspension, revocation, or restriction notices have been issued, you will know before your employer assigns you a load.
-
Report any traffic citation or administrative action immediately. Do not wait for your employer to discover a suspension. The moment you receive a notice of points, suspension, or conviction, disclose it to your safety manager or dispatcher in writing. This creates a record that you acted in good faith and prevents your employer from claiming ignorance.
-
Confirm CDL class and endorsements match your assignment. Before accepting a job, verify that your CDL class (A, B, or C) and any endorsements (HazMat, tanker, passenger) align with the vehicle and cargo. A mismatch puts both you and your employer at legal and financial risk.
-
Request a pre-hire and periodic license verification from your fleet. Responsible employers run these checks automatically. If yours does not, ask for it. A paper trail showing your employer verified your license reduces the "knowingly allowed" liability and protects you from being the scapegoat.
-
Keep proof of valid CDL in your cab and in your FMCSA record. Carry a copy of your valid CDL. If you renew or receive a new license, ensure the state updates the FMCSA licensing agency record. A mismatch between the state database and your physical card can trigger confusion during an inspection.
The core principle: 383.37(a) exists because employers have a duty to know their drivers' qualifications. You have a corresponding duty to stay honest about yours and to report changes immediately. That combination prevents the citation.