A searchable FMCSA Appendix A Controlled Substances/Alcohol violation database with section numbers, plain-English descriptions, violation groups, severity weight, SMS impact, and practical carrier/driver coaching notes.
Tap “View Details” on any violation to open explanation, carrier action, and driver action.
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| Code | Description | Group | Severity | SMS affected? | Action |
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DispatchHQ helps carriers organize Clearinghouse checks, drug/alcohol program controls, driver coaching, violation reviews, return-to-duty tracking, and corrective-action files.
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