VIN 4U3J04834ML020580 — 2021 XLS X-L SPECIALIZED TRAILERS INC
Recorded with Reliable Transport Systems Inc · USDOT 3617420
Vehicle identity
| VIN | 4U3J04834ML020580 |
| Model year | 2021 |
| Make | XLS |
| Model | X-L SPECIALIZED TRAILERS INC |
| Vehicle type | SEMI-TRAILER |
| License plate | CA 4TP2599 (California) |
| Inspection window | 2026-04-14 to 2026-07-23 |
Recorded vehicle, plate and carrier history
These are dated observations in the records available to us. They do not establish ownership, a sale, a transfer date, or continuous use between observations. The latest observation may not describe today’s vehicle or carrier.
| Observed dates | VIN | Plate | Reported carrier |
|---|---|---|---|
| 2026-07-23 | 4U3J04834ML020580 | CA 4TP2599 | RELIABLE TRANSPORT SYSTEMS INC · USDOT 3617420 |
| 2026-04-14 | 4U3J04834ML020580 | CA 4TP2599 | ALLIANCE SPECIALIZED INC · USDOT 2165842 |
Evidence: FMCSA inspection observations and retained snapshots of our vehicle records. Coverage is incomplete; an unreported change cannot be dated from these records.
Most recently recorded carrier for this vehicle
Reliable Transport Systems Inc Active
- USDOT
- 3617420
- MC
- 1234378
- Status
- Active
- Type
- Motor Carrier
- Based in
- Long Beach, CA
- Power units
- 3
- Drivers
- 3
- Inspections (24 mo)
- 6
- Crashes (24 mo)
- 0
- Vehicle OOS rate
- 60%
Carrier recorded at the latest inspection in the available records (2026-07-23). This does not establish current ownership or confirm that the carrier still operates this vehicle.
View full carrier profile →Authority, insurance & bonds, safety scores, crash history, inspections and the full fleet list.This vehicle has also been operated by 1 other carrier (listed below).
What this means
4U3J04834ML020580 is a 2021 XLS X-L SPECIALIZED TRAILERS INC operated by Reliable Transport Systems Inc (USDOT 3617420). License plate on its inspection records: CA 4TP2599. 2 roadside inspections on FMCSA record. No out-of-service violations are recorded for this VIN in the available inspection records. Other violations may still be present.
What this VIN is
2021 XLS X-L SPECIALIZED TRAILERS INC is the vehicle NHTSA’s VIN registry returns for 4U3J04834ML020580. It is a trailer built by BULL MOOSE HEAVY HAUL, INC at the MANCHESTER, IOWA plant.
Roadside inspection & out-of-service record
This specific vehicle appears in 2 FMCSA roadside inspections between 2026-04-14 and 2026-07-23. Across those inspections it was never placed out of service. Its most recent inspection (2026-07-23) was in California, a Level III — driver and paperwork only. No violations were recorded against this vehicle in our inspection window.
Operator history
This VIN appears under 2 different carriers in our records, oldest first: Alliance Specialized Inc (USDOT 2165842) on 2026-04-14 — 1 inspection, none out of service; Reliable Transport Systems Inc (USDOT 3617420) on 2026-07-23 — 1 inspection, none out of service.
Full spec sheet (NHTSA vPIC decode)
| Make | X-L SPECIALIZED TRAILERS INC |
| Model | X-L SPECIALIZED TRAILERS INC |
| Model Year | 2021 |
| Vehicle Type | TRAILER NHTSA’s top-level vehicle category derived from the VIN. |
| Body Class | Trailer The body style NHTSA assigns from the VIN — e.g. truck-tractor, straight truck, or cutaway. |
| Manufacturer | BULL MOOSE HEAVY HAUL, INC The legal manufacturer of record in NHTSA’s database. |
| Plant City | MANCHESTER Where the chassis was assembled — useful for verifying the VIN against the build record. |
| Plant State | IOWA |
| Plant Country | UNITED STATES (USA) |
| Axles | 3 Number of axles — ties directly to weight limits and toll/registration class. |
Operator history — 2 carriers operated this VIN
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Frequently Asked Questions
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