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SOUTHWICK & SON TRUCKING
Pioneer, CA
CarrierChk vetting signal
No flags raised
Authority, insurance, safety rating, crash records and out-of-service rates checked
FMCSA status: Active registration · no operating authority · DOT 1709931
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
14.3% OOS · 20 inspections on record
✓ No risk flags found on authority or insurance records
Vetting notes
- Active FMCSA registration, but no active for-hire operating authority on record
- No active insurance filing found on record
- Driver out-of-service rate 0.0% — below the 5.5% national average
- Vehicle out-of-service rate 0.0% — below the 20.7% national average
- 20 FMCSA inspections on record
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
1709931
Safety Rating
Not Rated
Operation Classification
Authorized for hire
MCS-150 Filed
March 12, 2025
FMCSA Registration
November 19, 2007
Annual Mileage
325,000 mi (2024)
Contact Information
Address
22540 State Hwy 88, Pioneer, CA 95666
Phone
Email
Owner / Officer
Jon Marie Southwick
Officer 2
Kevin Southwick
Cargo Types
General FreightOther Cargo
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
20
Driver Inspections
11
Vehicle Inspections
7
Out-of-Service Violations
3
Violations by Category
Vehicle Maintenance12
Unsafe Driving5
Hours of Service0
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
Vehicle OOS Rate0.0% · national avg 20.7%
✓ Below national average
14.3% of 7 inspections in the last 24 months put a driver or vehicle out of service —
32nd 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
2024
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
2 of 3 inspections
Unsafe Driving
2 of 7 inspections
Hours of Service
0 of 7 inspections
Driver Fitness
0 of 7 inspections
Controlled Substances
0 of 7 inspections
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
CA16
Fleet & Equipment (12)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~6
of 7 reported to FMCSA
Trailers
~6
seen at inspection
Equipment types observed
Grain / Hopper
5
Tractor
4
Chassis / Incomplete
1
Truck
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2012 Peterbilt 365 | Tractor · Class 8 | 1XPSD79X4CD146371 | 4 | — |
| 2005 Western Trailer Company | Grain / Hopper · 48 ft | 5DN1448285B001101 | 4 | — |
| 2011 Kenworth T6 Series | Tractor · Class 8 | 1XKAD49X7BJ290142 | 2 | 1 |
| 2025 Western Trailer Company | Grain / Hopper · 48 ft | 5DN144828SB000459 | 2 | 1 |
| 2020 Chevrolet Silverado | Chassis / Incomplete · Class 3 | 1GB3YTEY6LF274119 | 1 | — |
| 2022 Peterbilt 389 | Truck · Class 8 | 1NPXL49X6ND813090 | 1 | — |
| Reli | — | 1R9FA528SM7040144 | 1 | — |
| 2017 Kenworth T880 | Tractor · Class 8 | 1XKZDK9X8HJ176165 | 1 | — |
| 2011 Peterbilt 365 | Tractor · Class 8 | 1XPSD79X4BD129004 | 1 | — |
| 2025 Western Trailer Company | Grain / Hopper · 48 ft | 5DN144826SB000458 | 1 | — |
Show all 12 units
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2017 Western Trailer Company | Grain / Hopper · 48 ft | 5DN144827HB001417 | 1 | — |
| 2024 Western Trailer Company | Grain / Hopper · 46 ft | 5DN154626RB000812 | 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 (20)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| March 25, 2026 | UFA3003344 | EB 80 JWO GREENBACK, CA | III | 2 | — | — | Truck Tractor Semi-trailer |
PETERBILT WESTERN TRAILER COMPANY |
1XPSD79X4CD146371 5DN1448285B001101 |
CA 9B99375 CA 4GD4594 |
| 392.2-SLLLR | State/Local Laws - Lane restriction violation | Misc Violations | ||||||||
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| February 23, 2026 | UD4G004336 | CORDELIA IF, CA | III | 2 | — | — | Truck Tractor Semi-trailer |
PETERBILT WESTERN TRAILER COMPANY |
1XPSD79X4CD146371 5DN1448285B001101 |
CA 9B99375 CA 4GD4594 |
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| January 6, 2026 | UDEX007330 | IONE, CA | III | — | — | — | Straight Truck Semi-trailer |
KENWORTH WESTERN TRAILER COMPANY |
1XKZDK9X8HJ176165 5DN144827HB001417 |
CA 9E87231 CA 4PT2411 |
| October 17, 2025 | UCV0001066 | EB ANTELOPE PLATFORM SCALE, CA | II | 2 | — | — | Truck Tractor Semi-trailer |
PETERBILT WESTERN TRAILER COMPANY |
1XPSD79X4CD146371 5DN1448285B001101 |
CA 9B99375 CA 4GD4594 |
| 393.9A-LCL | Lighting - Clearance lamp(s) inoperative | Clearance Identification Lamps/Other | ||||||||
| 392.2-SLLEQP | State/Local Laws - Violation of state and local law - Equipment violation. | |||||||||
| July 23, 2025 | UCV0000788 | EB ANTELOPE PLATFORM SCALE, CA | II | 3 | — | — | Truck Tractor Semi-trailer |
PETERBILT WESTERN TRAILER COMPANY |
1XPSD79X4CD146371 5DN1448285B001101 |
CA 9B99375 CA 4GD4594 |
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 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 7, 2025 | UG2P000280 | SR132 / RIVER RD, CA | III | 2 | 1 | N/A | Truck Tractor Semi-trailer |
KENWORTH WESTERN TRAILER COMPANY |
1XKAD49X7BJ290142 5DN144828SB000459 |
CA 9E57283 OK CZ6891 |
| 392.2-SLLSOA | OOSState/Local Laws - State operating authority violation | |||||||||
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| June 19, 2025 | ND6S008375 | W/B ANTELOPE SCALES, CA | I | 5 | — | — | Truck Tractor Semi-trailer |
KENWORTH WESTERN TRAILER COMPANY |
1XKAD49X7BJ290142 5DN144828SB000459 |
CA 9E57283 OK CZ6891 |
| 392.2-SLLSOA | State/Local Laws - State operating authority violation | |||||||||
| 393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Emergency Equipment | ||||||||
| 393.11A1-LHLM | Lighting - Headlamp(s) - Any missing | Lighting | ||||||||
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 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 | ||||||||
| July 11, 2024 | NCWR002017 | 22540 HWY 88 PIONEER CA 95666, CA | V | — | — | — | Straight Truck |
CHEVROLET |
1GB3YTEY6LF274119 |
CA 93129B3 |
| July 11, 2024 | NCWR002016 | 22540 HWY 88 PIONEER CA 95666, CA | V | — | — | — | Straight Truck Trailer |
PETERBILT RELI |
1NPXL49X6ND813090 1R9FA528SM7040144 |
CA 61644K3 CA 4UR8618 |
| July 11, 2024 | NCWR002015 | 22540 HWY 88 PIONEER CA 95666, CA | V | — | — | — | Semi-trailer |
WESTERN TRAILER COMPANY |
5DN154626RB000812 |
OK CY-9268 |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: November 1, 2026.
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