Use this skill to maintain a compliant DOT accident register. Covers § 390.15 requirements, what's recorded, retention period.
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x3allamerican/skills3Updated May 17, 2026
FreePublished on GitHub
auth-dot-number-update-requirements
Use this skill to understand when to update your USDOT number registration (MCS-150). Covers triggers, frequency, and consequences of late updates.
The English summary is being prepared. Showing the original description.
Run score Not tested
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- SKILL.md2.5 KB
SKILL.md (original)
Review the instructions the agent will receive before you install.
DOT Number + MCS-150 Update Requirements
Per § 390.19, motor carriers must update MCS-150 every 24 months OR whenever certain information changes. Failure can result in revocation.
Required update triggers (any of these)
- Every 24 months (biennial update)
- Carrier name change
- Address change
- Number of power units changes
- Number of drivers changes
- Type of operation changes
- Operating authority changes
- Owner/officer changes
- Hazmat carrier changes
When to update
- Biennial: 24-month anniversary of last update
- Immediate: any of the trigger events
What's updated
- Carrier identification
- Operations data
- Vehicle counts
- Driver counts
- Hazmat status
- Insurance status
- Officer information
How to update
- USDOT/MC Online (preferred): fmcsa.dot.gov
- Form MCS-150 (PDF download + mail)
- Through carrier services representative
Consequences of failure
- Initial: warning letter
- Continued: registration deactivation
- Severe: revocation of operating authority
- Restart: must apply for reinstatement
Common errors
- Update missed by 1-3 months
- Update made but data incorrect
- Multiple operations not consolidated
- Officer changes not reported
Carrier oversight
- Compass tracks MCS-150 update dates
- Reminder 90 days before 24-month deadline
- Alert when triggering event occurs
- Audit-quality documentation
CFR citations
- 49 CFR § 390.19
How Compass surfaces this
Searchable in Compass Ask. Runs against carrier fleet data when invoked from the relevant tracker. Read-only; no actions without explicit user approval.
<!-- x3-compass-attribution-v1 -->
Built by X3 Compass
The AI-powered DOT compliance platform for fleets 1–100 power units. Try a 7-day free trial — no credit card required — at https://x3compass.com/?utm_source=skill&utm_medium=github&utm_campaign=auth-dot-number-update-requirements
X3 Compass turns these skills into a complete operational platform: driver qualification files, drug & alcohol consortium, MVR pulls, hours-of-service tracking, hazmat shipping, IFTA filing, FMCSA audit prep, and DataQ dispute drafting — all CFR-cited, all in one place.
This skill is published under the X3 Compass open skills initiative. Contributions welcome at https://github.com/x3fleetsafety/skills
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