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DIABLO ROOFING INC
Oakland, CA
CarrierChk vetting signal
Review recommended
Elevated Out-of-Service Rate
44.4% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 80% 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 registration · no operating authority · DOT 4354276
Active
No Safety Rating
Broker Vetting Summary
Key signals from current FMCSA records
Authority
No Active Authority
Common carrier
Insurance
Not Found
No coverage amount on file
Safety
Not Rated
44.4% OOS · 9 inspections on record
Flags · 1
Elevated Out-of-Service Rate
44.4% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 80% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
Vetting notes
- Active FMCSA registration, but no active for-hire operating authority on record
- Registered with FMCSA as a private carrier — not registered to haul other companies' freight for hire
- No active insurance filing found on record
- Driver out-of-service rate 12.5% — above the 5.5% national average
- Vehicle out-of-service rate 42.9% — above the 20.7% national average
- 9 FMCSA inspections on record
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
4354276
Safety Rating
Not Rated
Operation Classification
Private (property)
MCS-150 Filed
May 27, 2025
FMCSA Registration
January 30, 2025
Annual Mileage
5,525 mi (2024)
Contact Information
Address
10227 International Blvd, Oakland, CA 94603
Phone
Email
Website
Owner / Officer
Adrian Contreras
Cargo Types
General FreightBuilding MaterialsUtility EquipmentConstruction Materials
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
9
Driver Inspections
8
Vehicle Inspections
7
Out-of-Service Violations
6
Violations by Category
Vehicle Maintenance11
Unsafe Driving6
Hours of Service0
OOS Rates vs. National Average
Driver OOS Rate12.5% · national avg 5.5%
⚠ Above national average (7.0pp higher)
Vehicle OOS Rate42.9% · national avg 20.7%
⚠ Above national average (22.2pp higher)
44.4% of 9 inspections in the last 24 months put a driver or vehicle out of service —
80th 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
5 of 7 inspections
Unsafe Driving
4 of 8 inspections
Hours of Service
0 of 8 inspections
Driver Fitness
1 of 8 inspections
Controlled Substances
0 of 8 inspections
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
CA9
Fleet & Equipment (4)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~2
of 1 reported to FMCSA
Trailers
~2
seen at inspection
Equipment types observed
Chassis / Incomplete
2
Flatbed
1
Utility Trailer
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2022 Chevrolet Silverado HD | Chassis / Incomplete · Class 3 | 1GB3WRE70NF252734 | 5 | 4 |
| 2024 Ford F-650 | Chassis / Incomplete · Class 6 | 1FDNF6DE1RDF03471 | 4 | — |
| 2022 Big Tex | Flatbed · 26 ft | 16V1F2621N4180889 | 3 | 1 |
| 2014 Big Tex | Utility Trailer · 12 ft | 16VDX1226E5H29865 | 1 | 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 (9)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| October 28, 2026 | UE4O000922 | CA, CA | III | 3 | 1 | — | Straight Truck |
CHEVROLET |
1GB3WRE70NF252734 |
CA 32555N3 |
| 391.11B2-Q | OOSDriver cannot satisfy the English language proficiency requirements of 391.11(b)(2) in accordance with the current corresponding FMCSA enforcement guidance (391. | General Driver Qualification | ||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 392.2-SLLEQP | State/Local Laws - Violation of state and local law - Equipment violation. | |||||||||
| July 21, 2026 | UGL7000292 | CA, CA | III | 4 | — | — | Straight Truck |
FORD |
1FDNF6DE1RDF03471 |
CA 67391Z3 |
| 392.2-SLLTCD | State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other | Dangerous Driving | ||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 390.21TB2-DOT | Operate a CMV without USDOT number displayed. Must be preceded by the letters USDOT | |||||||||
| June 11, 2026 | UF44007554 | CA, CA | II | 4 | 2 | — | Straight Truck Semi-trailer |
CHEVROLET BIG TEX |
1GB3WRE70NF252734 16VDX1226E5H29865 |
CA 32555N3 CA 4NM1377 |
| 391.11B2-Q | OOSDriver cannot satisfy the English language proficiency requirements of 391.11(b)(2) in accordance with the current corresponding FMCSA enforcement guidance (391. | General Driver Qualification | ||||||||
| 393.9A-LTSI | OOSLighting - Turn signal - Any inoperative on the rearmost vehicle. | Lighting | ||||||||
| 392.2-SLLTCD | State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other | Dangerous Driving | ||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| January 28, 2026 | NE8I005001 | DUBLIN AREA, CA | I | 1 | — | — | Straight Truck |
FORD |
1FDNF6DE1RDF03471 |
CA 67391Z3 |
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| December 8, 2025 | NF37001724 | CORDELIA IF, CA | I | 4 | — | — | Straight Truck Semi-trailer |
FORD BIG TEX |
1FDNF6DE1RDF03471 16V1F2621N4180889 |
CA 67391Z3 CA 4UW6293 |
| 393.75A3-ATIS | Tires - All others, leaking in tread area with inflation more than 50% of the maximum inflation pressure on tire equipped with ATIS | Tires | ||||||||
| 393.75A3-ATIS | Tires - All others, leaking in tread area with inflation more than 50% of the maximum inflation pressure on tire equipped with ATIS | Tires | ||||||||
| 393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Emergency Equipment | ||||||||
| 393.95F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Emergency Equipment | ||||||||
| September 23, 2025 | NDMK006554 | CORDELIA IF, CA | I | 1 | — | — | Straight Truck Semi-trailer |
FORD BIG TEX |
1FDNF6DE1RDF03471 16V1F2621N4180889 |
CA 67391Z3 CA 4UW6293 |
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| August 11, 2025 | NE7S005072 | NIMITZ IF, CA | I | 4 | 2 | — | Straight Truck Semi-trailer |
CHEVROLET BIG TEX |
1GB3WRE70NF252734 16V1F2621N4180889 |
CA 32555N3 CA 4UW6293 |
| 393.104B-C | OOSCargo - Damaged securement devices/tiedowns | Securement Device | ||||||||
| 393.43DBMA | OOSBrake - Breakaway not attached to the towing vehicle | Brakes All Others | ||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| June 4, 2025 | UFJ5001168 | N/B 680 WC SCALES, CA | I | 9 | 1 | — | Straight Truck Semi-trailer |
CHEVROLET CLEAS |
1GB3WRE70NF252734 12867 |
CA 32555N3 CA E599002 |
| 393.43DBMA | OOSBrake - Breakaway not attached to the towing vehicle | Brakes All Others | ||||||||
| 392.2-SLL | State/Local Laws - | |||||||||
| 392.16AD | Driver - Failed to use seat belt while operating a CMV. | Seat Belt | ||||||||
| 392.2-SLLCP | State/Local Laws - Operate a CMV while using a cellular phone | Texting | ||||||||
| 392.2-SLLLR | State/Local Laws - Lane restriction violation | Misc Violations | ||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 392.2-SLLSOA | State/Local Laws - State operating authority violation | |||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 390.21TB2-DOT | Operate a CMV without USDOT number displayed. Must be preceded by the letters USDOT | |||||||||
| May 7, 2025 | UGL7000122 | I-80 E/B JEO PITTMAN RD, CA | I | 7 | — | — | Straight Truck |
CHEVROLET |
1GB3WRE70NF252734 |
CA 32555N3 |
| 392.2-SLLTCD | State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other | Dangerous Driving | ||||||||
| 392.2-SLLSOA | State/Local Laws - State operating authority violation | |||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 390.21TB2-DOT | Operate a CMV without USDOT number displayed. Must be preceded by the letters USDOT | |||||||||
| 393.60C | Windshield - Damaged or Discolored | Windshield/ Glass/ Markings | ||||||||
| 393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Emergency Equipment | ||||||||
| 393.95F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Emergency Equipment | ||||||||
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: November 1, 2026.
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