4 risky driver scenarios—and how to avoid disqualification
Commercial motor vehicle (CMV) drivers must meet strict qualification rules. A disqualified driver operating a CMV can lead to serious problems like:
- Out-of-service violations along with fines and stranded assets,
- Compliance, Safety, Accountability (CSA) Driver Fitness score damage, and
- Excessive judgments if a crash occurs.
4 scenarios and best practices
The four disqualification scenarios below are quite common, but the recommended best practices can help avoid them.
1. Expired medical certifications
Drivers must carry a valid medical certificate or have the certification on their motor vehicle record (MVR) in the case of drivers holding a Commercial Driver’s License (CDL). If the certification expires, the driver cannot operate any CMV.
Examples of when medical certifications may expire include:
- The medical exam was not scheduled early enough to allow for examiner-required tests or input from a specialist, which may impact a certification decision. An examiner cannot extend an expiration date for any reason.
- CDL driver exam information may not transfer to their state licensing authority in a timely manner and the MVR will show “Not-certified” if the problems are not resolved before the expiration date.
Best practices:
1. Track in a fleet management system, all driver medical certification expiration dates and verify that each medical exam is scheduled with sufficient time prior to expiration.
2. Use continuous MVR monitoring to receive alerts on driver licensing status changes.
2. Suspended or revoked CDLs
A licensing authority can suspend or revoke a commercial driver’s license (CDL) for reasons like driving under the influence (DUI) in a person vehicle or unpaid child support. If the carrier doesn’t monitor a driver’s MVR more than the minimum of once per year, the driver may lose CDL privileges or any ability to operate vehicles without their company being aware.
Best practices:
1. Use continuous MVR monitoring to receive alerts on driver licensing status changes.
2. Implement a company policy requiring drivers to immediately notify the company of any moving violation or warning, in addition to convictions.
3. Missed drug and alcohol tests
CDL-vehicle drivers must be part of a Department of Transportation (DOT) drug and alcohol testing program. This includes pre-employment, random, and post-accident testing. A top acute (most serious) DOT audit violation each year is issued to carriers not having a DOT testing program. The DOT requires a testing program for any carrier operating CDL vehicles in intrastate or interstate commerce.
Best practices:
1. Hire a third party to provide compliance guidance on the applicability of safety regulations, and
2. Outsource the management of any DOT drug and alcohol testing and Clearinghouse requirements.
4. Failed English Language Proficiency (ELP) assessments
At hire, carriers must verify that CMV drivers are able to read and speak the English language well enough to:
1. Interact with enforcement officers,
2. Complete forms, and
3. Understand road signs.
Since June 25, 2025, during a roadside inspection, enforcement can conduct a two-step assessment of ELP. Officers can place a driver out-of-service, disqualifying them, if the driver cannot answer basic questions or recognize road signs.
Best practice:
1. Assess all driver applicants by simulating a roadside inspection as the last step of the road test process.
Key to remember: Closely monitor driver qualifications with best practices that exceed regulatory minimums.