PROSOSKI TRAILER PARTS AND SERVICE LLC
USDOT 4148944 · Doing business as IRON BEAR TRAILER
Active, interstate carrier, small fleet (5 power units) — no FMCSA safety rating on record (common).
Vetting summary
At a glance
- Out-of-service rate42.9% vs 19.1% national avg
- Crashes (24 months)1 reported — involvement does not imply fault
- Linked registrations1 share this carrier's phone or address
These signals summarize the records shown below — they are a starting point for your own checks, not a judgment of the carrier.
Registration
Carrier identity
| USDOT Number | 4148944 |
|---|---|
| MC Number | — |
| Legal Name | PROSOSKI TRAILER PARTS AND SERVICE LLC |
| DBA Name | IRON BEAR TRAILER |
| Entity Type | — |
| Phone | 3032970339 |
| Address | 1291 E 54TH AVE, Denver, CO, 80216-1771 |
Status
Authority & safety
| Operating Status | Active |
|---|---|
| Operation Type | Interstate |
| Safety Rating | None on record — most carriers have not received a formal FMCSA safety rating. |
| Hazmat Flag | false |
Safety ratings: S = Satisfactory, C = Conditional, U = Unsatisfactory. A carrier with no rating has not been through a full FMCSA compliance review — this is common and not itself a red flag.
Our scoring
Safety scores
| Unsafe Driving | 82 / 100 |
|---|---|
| Hours-of-Service Compliance | 94 / 100 |
| Driver Fitness | 86 / 100 |
| Controlled Substances & Alcohol | 0 / 100 |
| Vehicle Maintenance | 77 / 100 |
Scores are 0-100 rankings computed by us from public FMCSA inspection measures; higher = worse relative to peers. Not official CSA/BASIC percentiles. How these scores are computed.
Safety events
Inspections & crashes (last 24 months)
| Inspections | 7 |
|---|---|
| Out-of-Service Rate | 42.9% vs 19.1% national average |
| Crashes | 1 total (0 fatal, 0 with injuries, 1 towaway) |
- 2026-05-08 — CO — towaway
Most frequent violation categories: 15 (3), 50 (2), 1 (1).
Crash involvement does not imply fault. FMCSA crash records list all reportable crashes involving a carrier, regardless of who caused them.
Signals
Linked registrations
1 other active carrier registration share this carrier's phone or address in FMCSA records.
Shared contact details can have many ordinary explanations, such as a shared dispatch service, registration agent, or office address.
Equipment
Fleet & operations
| Power Units (trucks) | 5 |
|---|---|
| Drivers | 3 |
| Recent Annual Mileage | 150,000 |
| Last MCS-150 Filing | 07-APR-26 |
PROSOSKI TRAILER PARTS AND SERVICE LLC operates 5 power units — a larger fleet than 88% of carriers registered in CO.
Nearby
Other carriers in Denver, CO
- MOSARR SERVICES LLC — USDOT 4320367, 41061 power units
- GREYHAWK SIGNS LLC — USDOT 4415831, 30000 power units
- S A TOWING — USDOT 4121614, 12001 power units
- MARKWEST ENERGY OPERATING COMPANY LLC — USDOT 4151788, 122 power units
- LAZ PARKING MIDWEST LLC — USDOT 4349340, 90 power units
Browse all carriers in Denver, CO or all CO carriers.