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
veh-trailer-only-inspection
Use this skill to understand trailer-specific inspection requirements when a trailer is not coupled to a tractor. Covers annual inspection, DVIR rules, and parking inspections.
The English summary is being prepared. Showing the original description.
Run score Not tested
See how to installFiles included (1)
- SKILL.md2.8 KB
SKILL.md (original)
Review the instructions the agent will receive before you install.
Trailer-Only Inspection (Standalone Trailer)
A standalone trailer (not coupled to a tractor) still requires periodic inspection. The carrier owns the inspection responsibility.
Annual inspection (same as tractor)
- Required every 12 months
- Conducted by a qualified inspector
- Covers brakes, lights, hubs, structure, body, suspension
- Certificate retained in trailer file
Pre-trip inspection of trailer
- Driver coupling to a trailer inspects the trailer at coupling
- Brake hose connections, lights, glass, mirrors
- Body integrity, latches, doors
When trailer is parked
- Not subject to daily DVIR (only when in operation)
- Annual inspection still required regardless of parking time
- Lights, tires, structure visible from outside should be checked weekly
Trailer ownership scenarios
- Owned trailer — carrier is responsible for inspection
- Leased trailer — depending on lease, lessor may be responsible (read the lease)
- Hired trailer (drayage, intermodal) — operator/owner responsible
Trailer maintenance records
Required per § 396.3:
- Last annual inspection
- Last preventive maintenance event
- Last repairs
- Hub lubrication
- Lighting and electrical work
Inspection at non-traditional times
- Before long-term storage (180+ days inactive)
- After unusual wear pattern noticed
- Following accident or impact event
- When carrier identifies trailer in trouble pool
Compass Vehicles tracking
- Trailer fleet visible in main vehicle inventory
- Annual inspection due tracked per VIN
- Coupling event auto-logs pre-trip
- Inactivity flag for trailers inactive 180+ days
CFR citations
- 49 CFR § 396.17
- 49 CFR § 393
- FMCSA Appendix G
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=veh-trailer-only-inspection
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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