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US COUGAR INC
Diamond Bar, CA
CarrierChk vetting signal
Review recommended
Elevated Out-of-Service Rate
50.0% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 82% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
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FMCSA status: Active & Authorized · DOT 4378489 · MC 1715982
No Safety Rating
Active 1 yr, 5 mo
Broker Vetting Summary
Key signals from current FMCSA records
Authority
Active
MC-1715982 · Common carrier
Insurance
On File
A-one Commercial Insurance Rrg, Inc
Safety
Not Rated
50.0% OOS · 7 inspections on record
Flags · 1
Elevated Out-of-Service Rate
50.0% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 82% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
Vetting notes
- Operating authority active for 1 yr, 5 mo
- Insurance on file: $750,000
- Vehicle out-of-service rate 60.0% — above the 20.7% national average
- 7 FMCSA inspections on record
Authority & Compliance
Authority, insurance and required filings
Operating Authority
MC1715982
Common Carrier
Insurance on File
A-ONE COMMERCIAL INSURANCE RRG, INC
BI&PD · $750,000 · Policy A-ONE2026-6407
PLATINUM TRANSPORT INSURANCE RRG, INC
BI&PD · $750,000 · Policy PTI003367-00
Required Filings
Liability (BIPD)
$750,000
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
4378489
MC Number
MC-1715982
Safety Rating
Not Rated
Operation Classification
Authorized for hire
MCS-150 Filed
April 29, 2026
FMCSA Registration
March 17, 2025
Authority Granted
April 11, 2025
Annual Mileage
180,000 mi (2026)
Contact Information
Address
23593 Coyote Springs Dr, Diamond Bar, CA 91765
Phone
Email
Owner / Officer
Xiaojian Sun
Cargo Types
General Freight
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
7
Driver Inspections
4
Vehicle Inspections
5
Out-of-Service Violations
8
Violations by Category
Vehicle Maintenance21
Unsafe Driving0
Hours of Service6
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
Vehicle OOS Rate60.0% · national avg 20.7%
⚠ Above national average (39.3pp higher)
50.0% of 6 inspections in the last 24 months put a driver or vehicle out of service —
82nd percentile among carriers with 5–9 inspections (lower is better).
CarrierChk calculation from FMCSA roadside inspection records, not an FMCSA score.
Inspection Trend by Year
2026
2025
Violation Rate by Category
Share of roadside inspections in FMCSA's rolling 24-month window that found a violation in each category. The individual violations are listed under each inspection in Inspection Details below. None of this is the basis of the safety rating, which comes from an on-site compliance review.
Vehicle Maintenance
4 of 5 inspections
Unsafe Driving
0 of 6 inspections
Hours of Service
1 of 6 inspections
Driver Fitness
0 of 6 inspections
Controlled Substances
0 of 6 inspections
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
AZ2
CA1
CO1
GA1
NM1
Fleet & Equipment (6)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~2
of 2 reported to FMCSA
Trailers
~4
seen at inspection
Equipment types observed
Dry Van
3
Tractor
2
Semi-trailer
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2019 Volvo Truck VNL | Tractor · Class 8 | 4V4NC9EH1KN204834 | 5 | 3 |
| 2004 Great Dane Trailers | Dry Van · 6 ft | 1GRAA06274B003102 | 2 | 2 |
| 2008 Utility Trailer Manufacturer | Dry Van · 53 ft | 1UYVS25308P536109 | 2 | — |
| Util | Semi-trailer | 1UYVS25308P53610 | 1 | 1 |
| 2014 Utility Trailer Manufacturer | Dry Van · 53 ft | 1UYVS2530EG011319 | 1 | — |
| 2020 Volvo Truck VNL | Tractor · Class 8 | 4V4NC9EH2LN221515 | 1 | — |
A vehicle appearing here was recorded in an inspection — it is not proof the carrier still operates it today.
Inspection Details
Each roadside inspection with its violations
Inspection Records (7)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| September 2, 2026 | W210001866 | JOPLIN MO | III | 4 | 4 | OVED APPAREL | Truck Tractor Semi-trailer |
VOLVO UTILITY TRAILER MANUFACTURER |
4V4NC9EH7KN904678 1UYVS2530EG011319 |
CA ZP97710 CA 4MX5942 |
| 395.8E-HOSPDELDT | OOSHOS (Property) - Tampering with an ELD so that the device does not accurately record and retain required data. Explain: | False Log | ||||||||
| 391.11B2-S | OOSDriver cannot satisfy the English language proficiency requirements of 391.11(b)(2) in accordance with the current corresponding FMCSA enforcement guidance (391.1 | General Driver Qualification | ||||||||
| 395.8E-HOSPDELDT | OOSHOS (Property) - Tampering with an ELD so that the device does not accurately record and retain required data. Explain: | False Log | ||||||||
| 395.8E-HOSPDELDT | OOSHOS (Property) - Tampering with an ELD so that the device does not accurately record and retain required data. Explain: | False Log | ||||||||
| August 23, 2026 | 1403001852 | LAVONIA GA | III | — | — | MASA TRUCKING CO. | Truck Tractor Semi-trailer |
VOLVO TRUCK UTILITY TRAILER MANUFACTURER |
4V4NC9EH2LN221515 1UYVS2530EG011319 |
CA ZP69357 CA 4MX5942 |
| August 14, 2026 | 6898000396 | SACATON AZ | II | 9 | — | EMA ONTARIO HUB | Truck Tractor Semi-trailer |
VOLVO TRUCK UTILITY TRAILER MANUFACTURER |
4V4NC9EH1KN204834 1UYVS25308P536109 |
CA ZP12137 CA 4TG3186 |
| 393.11B-CSRIGRR | Conspicuity Systems - Trailers, rear impact guard retro reflective sheeting inadequate on vehicle manufactured on or after December 1, 1993 | Reflective Sheeting | ||||||||
| 393.78A-WS | Washers - Inoperative washing system. | Windshield/ Glass/ Markings | ||||||||
| 396.17C-PI | Operating a CMV without documentation of a periodic inspection | Inspection Reports | ||||||||
| 393.55D2-B | Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1, 2001 for towed vehicle. | Brakes All Others | ||||||||
| 393.55D2-B | Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1, 2001 for towed vehicle. | Brakes All Others | ||||||||
| 395.3A3-HOSPRNP | Driving beyond 11 hour driving limit in a 14-hour period. (Property carrying vehicle) - Nominal Violation | Hours Nominal | ||||||||
| 395.3A3II | Driving beyond 8 hour driving limit since the end of the last on duty, off duty, or sleeper period of at least 30 minutes | Hours | ||||||||
| 393.11A1-LCHL | Lighting - Lamps improper color, height, location. | Lighting | ||||||||
| 395.8E-HOSPD | HOS (Property) - No driver may make a false report in connection with a duty status. Explain | False Log | ||||||||
| May 15, 2026 | 6792000483 | COCHISE AZ | II | — | — | AMA | Truck Tractor Semi-trailer |
VOLVO TRUCK UTILITY TRAILER MANUFACTURER |
4V4NC9EH1KN204834 1UYVS25308P536109 |
CA ZP12137 CA 4TG3186 |
| April 11, 2026 | 0309Q2TT2F | GALLUP PORT OF ENTRY, NM | II | 1 | 1 | AMAZON | Truck Tractor Semi-trailer |
VOLVO TRUCK UTIL |
4V4NC9EH1KN204834 1UYVS25308P53610 |
CA ZP12137 CA 4TG318 |
| 393.75A3 | OOSTire-flat and/or audible air leak | Tires | ||||||||
| October 30, 2025 | NDUF007221 | CASTAIC IF, CA | I | 4 | 2 | — | Truck Tractor Semi-trailer |
VOLVO TRUCK GREAT DANE TRAILERS |
4V4NC9EH1KN204834 1GRAA06274B003102 |
CA ZP12137 CA 4TZ1429 |
| 396.3A1-BOS | OOSBrake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | Brake Out Of Service | ||||||||
| 396.3A1-BALAC | OOSBrake - Audible air leak from a brake chamber | Brakes All Others | ||||||||
| 393.55E-B | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998 | Brakes All Others | ||||||||
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured | Brakes All Others | ||||||||
| April 16, 2025 | 1112510501 | LOMA CO | I | 11 | 1 | TOV CA | Truck Tractor Semi-trailer |
VOLVO TRUCK GREAT DANE TRAILERS |
4V4NC9EH1KN204834 1GRAA06274B003102 |
CA ZP12137 CA 4TZ1429 |
| 396.3A1-BOS | OOSBrake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | Brake Out Of Service | ||||||||
| 393.45D-B | Air Brake - Audible air leak at a proper connection | Brakes All Others | ||||||||
| 393.47A-BCFSBD | Drum Brake - Contaminated friction surface | Brakes All Others | ||||||||
| 396.17C-PI | Operating a CMV without documentation of a periodic inspection | Inspection Reports | ||||||||
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 393.47A-BCFSBD | Drum Brake - Contaminated friction surface | Brakes All Others | ||||||||
| 393.53B-B | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Brakes All Others | ||||||||
| 396.17C-PI | Operating a CMV without documentation of a periodic inspection | Inspection Reports | ||||||||
| 393.9A-LIL | Lighting - Identification lamp(s) inoperative | Clearance Identification Lamps/Other | ||||||||
| 393.9A-LSLI | Lighting - Stop lamps - Any inoperative. | Lighting | ||||||||
| 392.2-SLLTR | State/Local Laws - Truck restriction | |||||||||
Shippers Seen at Inspections
Shipper names recorded by roadside inspectors over roughly the last three years. Only inspected loads appear, so this is a sample of who the carrier hauls for, not a complete customer list. Names are as entered at the roadside; blanks and placeholders such as “N/A” or “same as carrier” are left out.
| Shipper | Inspections | Most recent |
|---|---|---|
| OVED APPAREL | 1 | September 2, 2026 |
| MASA TRUCKING CO. | 1 | August 23, 2026 |
| EMA ONTARIO HUB | 1 | August 14, 2026 |
| AMA | 1 | May 15, 2026 |
| AMAZON | 1 | April 11, 2026 |
| TOV CA | 1 | April 16, 2025 |
History & Filings
Authority, insurance and process-agent records
Authority History
| Date | Status | Type |
|---|---|---|
| April 8, 2026 | INVOLUNTARY REVOCATION | Common |
| April 11, 2025 | GRANTED | Common Carrier |
Insurance & Revocation Filings
| Date | Type | Status |
|---|---|---|
| April 7, 2026 | BI&PD Primary/Excess | On file |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: September 20, 2026.
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