Violation code

387.301A

Carrier -Motor carrier shall not engage in interstate or foreign commerce without proof of public liability and property damage insurance as required in 49 CFR 38

Not in SMSOOS· FMCSA A&I All Violations

387.301A is a Other violation under 49 CFR §387.301A. It is an out-of-service violation; it is not scored in the SMS. Nationally it was cited 13,719 times in the last five years, with an OOS rate of 0.2%.

📊

National roadside inspection stats

as of 9/20/2026

Inspections

13,706

that found this code

Violations

13,719

total written

OOS rate

0.2%

27 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.

📎

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: Other
Regulation §: 387.301A
Severity weight: N/A
Used in SMS: No
Status: Active
Updated: 9/20/2026

Last updated September 2026

⚡

Think this violation was written incorrectly?

Generate a polished DataQs challenge letter for 387.301A in about 5 seconds. AI quotes the CFR, predicts your grant chance.

⚡ Draft a challenge →

What 387.301A means — and how to avoid it

In plain English

In plain terms, 387.301A is cited for carrier -Motor carrier shall not engage in interstate or foreign commerce without proof of public liability and property damage insurance as required in 49 CFR 38. Because it’s an out-of-service condition, an inspector can put the driver or vehicle out of service on the spot until it’s corrected.

What the inspector checks

•The specific condition described by this violation

How to prevent it

✓Address the underlying issue during your pre-trip and maintenance routine

How it affects your CSA

0 CSA points

387.301A is not scored in the SMS. It adds 0 CSA points — even if written out-of-service — but it still appears on the inspection report and the driver’s PSP.

General guidance from the violation’s FMCSA classification — not legal advice, and not a substitute for the inspector’s findings or 49 CFR.

📚

Challenging 387.301A through FMCSA DataQs

If this violation was written incorrectly, here are the angles trucking-safety managers use to contest it. Playbook: Codes not used in SMS scoring.

Common ways to challenge this code

Not used in SMS — should not affect BASIC
This code is on the inspection report but is excluded from SMS BASIC scoring per Appendix A. Use DataQs to correct the underlying data quality issue if the code was written in error, but understand it does not affect the CSA percentile.
Evidence that wins
- ✓FMCSA SMS Methodology Appendix A reference
- ✓Underlying inspection report

Common pitfalls — avoid these

⚠These codes still appear on PSP — challenge the data if the cite was wrong

⚡ Draft a challenge for 387.301A →Read the DataQs guide first

Other Other codes

Codes under the same FMCSA violation group

❓

Frequently asked questions about 387.301A

What does violation 387.301A mean?

387.301A is the FMCSA roadside-inspection violation code for "Carrier -Motor carrier shall not engage in interstate or foreign commerce without proof of public liability and property damage insurance as required in 49 CFR 38", part of the Other group, cited under 49 CFR §387.301A.

What BASIC does 387.301A affect?

387.301A 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 387.301A an out-of-service (OOS) violation?

Yes. 387.301A 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 387.301A add?

387.301A adds 0 CSA points because it is not used in SMS scoring, even when written out of service.

How can a driver prevent 387.301A?

Address the underlying issue during your pre-trip and maintenance routine.

Can 387.301A be challenged through DataQs?

Yes. If you believe 387.301A 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 387.301A Carrier CSA lookup CSA glossary

Turn this violation into a training moment

Assign training on this exact topic — and prove it

Looking up a code is step one. FleetTrained — built by the same safety manager behind VioCodes — lets you assign a video on this topic; drivers quiz and sign in their language, and you get a DOT-ready certificate so it stops happening.