Violation code

391.11B4CLHA

Medical (Certificate) - Operating a commercial vehicle without corrective lenses or hearing aid as indicated on the driver's medical certificate

Not in SMSOOS· FMCSA A&I All Violations

391.11B4CLHA is a Driver violation under 49 CFR §391.11B4CLHA. It is an out-of-service violation; it is not scored in the SMS. Nationally it was cited 719 times in the last five years, with an OOS rate of 99.7%.

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National roadside inspection stats

as of 6/20/2026

Inspections

719

that found this code

Violations

719

total written

OOS rate

99.7%

717 OOS

Source: FMCSA roadside inspection data (last 5 years). The OOS rate is the share of these violations that led the officer to mark the driver or vehicle out of service.

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Not used in SMS BASIC scoring

Recorded on your inspection report and visible on the PSP, but contributes 0 points to CSA BASIC scores — even if cited Out-of-Service.

Violation group: Driver
Regulation §: 391.11B4CLHA
Severity weight: N/A
Used in SMS: No
Status: Active
Updated: 6/20/2026

Last updated June 2026

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Challenging 391.11B4CLHA through FMCSA DataQs

If this violation was written incorrectly, here are the angles trucking-safety managers use to contest it. Playbook: Driver Fitness.

Common ways to challenge this code

Medical certificate was valid and on file
A valid medical examiner's certificate was in the driver's qualification file and was either not produced at roadside or not properly recognized.
Evidence that wins
- ✓Copy of the valid medical examiner's certificate
- ✓Driver qualification file index
- ✓National Registry verification printout
CDL class / endorsement was correct for the operation
The driver's CDL class and endorsements were correct for the vehicle and cargo being operated.
Evidence that wins
- ✓Copy of the valid CDL with endorsements
- ✓Vehicle registration showing GVWR/configuration
- ✓Bill of lading or shipping papers showing cargo

Common pitfalls — avoid these

⚠A medical certificate that expired the DAY of inspection still fails — there is no grace period

⚡ Draft a challenge for 391.11B4CLHA →Read the DataQs guide first

Other Driver codes

Codes under the same FMCSA violation group

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Frequently asked questions about 391.11B4CLHA

What does violation 391.11B4CLHA mean?

391.11B4CLHA is the FMCSA roadside-inspection violation code for "Medical (Certificate) - Operating a commercial vehicle without corrective lenses or hearing aid as indicated on the driver's medical certificate", part of the Driver group, cited under 49 CFR §391.11B4CLHA.

What BASIC does 391.11B4CLHA affect?

391.11B4CLHA is not scored in any CSA BASIC. It is recorded on the inspection report and appears on the PSP, but it contributes 0 points to a carrier's SMS BASIC percentiles.

Is 391.11B4CLHA an out-of-service (OOS) violation?

Yes. 391.11B4CLHA is an out-of-service violation, meaning the driver or vehicle can be placed out of service at the roadside until the issue is corrected. OOS violations also add an extra severity point in SMS scoring.

How many CSA points does 391.11B4CLHA add?

391.11B4CLHA adds 0 CSA points because it is not used in SMS scoring, even when written out of service.

Can 391.11B4CLHA be challenged through DataQs?

Yes. If you believe 391.11B4CLHA was recorded in error, you can file a Request for Data Review (RDR) through the FMCSA DataQs system with supporting evidence. A successful challenge can remove or correct the violation on your record.

Keep going

CSA points calculator How to challenge a violation Draft a DataQs letter for 391.11B4CLHA Carrier CSA lookup CSA glossary