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C CARLSON INC
DBA: Carlson Trucking
Humboldt, IA
CarrierChk vetting signal
No flags raised
Authority, insurance, safety rating and crash records checked
FMCSA status: Active & Authorized · DOT 641673 · MC 304741
No Safety Rating
Active 30 yrs, 2 mo
Broker Vetting Summary
Key signals from current FMCSA records
Authority
Active
MC-304741 · Common carrier
Insurance
On File
Farm Bureau Property And Casualty Insurance Company
Safety
Not Rated
8.0% OOS · 31 inspections on record
✓ No risk flags found on authority or insurance records
Vetting notes
- Operating authority active for 30 yrs, 2 mo
- Insurance on file: $750,000
- Vehicle out-of-service rate 40.0% — above the 20.7% national average
- 31 FMCSA inspections on record
Authority & Compliance
Authority, insurance and required filings
Operating Authority
MC304741
Motor Carrier of Property (Except Household Goods) · $750,000 required
Insurance on File
Farm Bureau Property and Casualty Insurance Company
BI&PD · $750,000 · Policy CPP0009157
Required Filings
Liability (BIPD)
$750,000
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
641673
MC Number
MC-304741
Safety Rating
Not Rated
Operation Classification
Authorized for hire, Exempt for hire
MCS-150 Filed
January 9, 2025
FMCSA Registration
May 18, 1996
Authority Granted
July 25, 1996
Annual Mileage
825,048 mi (2024)
Contact Information
Address
912 1st St N, Humboldt, IA 50548
Phone
Email
Owner / Officer
Curtis E Carlson
Cargo Types
General FreightMetal/Sheet SteelDrive/Tow AwayLogs/Poles/BeamsBuilding MaterialsMachinery/Large ObjectsIntermodalGrain/FeedDry BulkRefrigerated FoodBeveragesPaper ProductsFarm SuppliesConstruction MaterialsChemicalsMeat
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
31
Driver Inspections
25
Vehicle Inspections
6
Out-of-Service Violations
5
Violations by Category
Vehicle Maintenance8
Unsafe Driving12
Hours of Service5
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
Vehicle OOS Rate40.0% · national avg 20.7%
⚠ Above national average (19.3pp higher)
8.0% of 25 inspections in the last 24 months put a driver or vehicle out of service —
21st percentile among carriers with 25–99 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
3 of 5 inspections
Unsafe Driving
8 of 25 inspections
Hours of Service
4 of 25 inspections
Driver Fitness
0 of 25 inspections
Controlled Substances
0 of 25 inspections
Crash History (1)
Crashes reported to FMCSA in the last 24 months. A crash appearing here is a reported event, not a finding of fault.
1
Crashes
0
Fatalities
0
Injuries
1
Tow-aways
| Date | State | Fatal | Injured | Tow | Conditions |
|---|---|---|---|---|---|
| February 5, 2025 | MO | — | — | Yes | Rain · Dark - Not Lighted · Ice |
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
IA14
SD5
MN4
IL1
KS1
MO1
and 1 more state
Fleet & Equipment (19)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~10
of 18 reported to FMCSA
Trailers
~9
seen at inspection
Equipment types observed
Tractor
10
Grain / Hopper
5
Dry Van
2
Flatbed
2
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2016 Kenworth T8 Series | Tractor · Class 8 | 1XKDD49X8GJ467219 | 6 | 1 |
| 2006 Reitnouer Inc | Flatbed · 48 ft | 1RNF48A266R016136 | 5 | 1 |
| 2019 Wilson | Grain / Hopper · 43 ft | 1W14432A7K2270935 | 4 | — |
| 2024 Wilson | Grain / Hopper · 43 ft | 1W1K44321R7728650 | 4 | — |
| 2007 Wabash Wabash National Corporation | Dry Van · 53 ft | 1JJV532W27L976744 | 3 | — |
| 2021 Wilson | Grain / Hopper · 41 ft | 1W1K44125M7722118 | 3 | — |
| 2016 Kenworth T8 Series | Tractor · Class 8 | 1XKDD49XXGJ467223 | 3 | — |
| 2005 Kenworth W900 | Tractor · Class 8 | 1XKWDB9X35J086095 | 3 | — |
| 2021 Kenworth T880 | Tractor · Class 8 | 1XKZD49X5MJ442747 | 3 | 1 |
| 2021 Kenworth T880 | Tractor · Class 8 | 1XKZD49X7MJ442748 | 3 | — |
Show all 19 units
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2015 Kenworth T8 Series | Tractor · Class 8 | 3WKDD49X1FF453570 | 3 | — |
| 2021 Wilson | Grain / Hopper · 41 ft | 1W1K44127M7722119 | 2 | — |
| 2023 Wilson | Grain / Hopper · 43 ft | 1W1K44320P7726448 | 2 | — |
| 2021 Kenworth T880 | Tractor · Class 8 | 1XKZD49X0MJ442753 | 2 | — |
| 2019 Hyundai Translead Trailers | Dry Van · 53 ft | 3H3V532C9KT709339 | 2 | 1 |
| 2005 Reitnouer Inc | Flatbed · 48 ft | 1RNF48A275R011266 | 1 | — |
| 2015 Kenworth T8 Series | Tractor · Class 8 | 1XKDD49X5FJ438758 | 1 | — |
| 2004 Kenworth T800 | Tractor · Class 8 | 1XKDDB9X14J060648 | 1 | — |
| 2016 Kenworth T880 | Tractor · Class 8 | 1XKZD49X0GJ118349 | 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 (31)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| August 26, 2026 | 320O000155 | IA, IA | II | 1 | 1 | N/A | Truck Tractor Semi-trailer |
KENWORTH REITNOUER INC |
1XKDD49X8GJ467219 1RNF48A266R016136 |
IA FT0908 IA FT1229 |
| 393.75A3-TAOL | OOSTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Tires | ||||||||
| April 28, 2026 | 000P151WGX | I-35 SB, IA | III | 1 | — | MOSAIC GLOBAL SALES | Truck Tractor Semi-trailer |
KENWORTH WILSON |
1XKZD49X7MJ442748 1W1K44127M7722119 |
IA FZ2685 IA FX0037 |
| 392.2-SLLEWA2 | State/Local Laws - Excessive weight - 2501-5000 lbs over on an axle/axle groups | |||||||||
| March 20, 2026 | 000P123H71 | HIGHWAY 169SB, IA | III | 1 | — | RINKER MATERIALS | Truck Tractor Semi-trailer |
KENWORTH REITNOUER INC |
1XKZD49X0MJ442753 1RNF48A266R016136 |
IA FZ2686 IA FT1229 |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| March 3, 2026 | 5280002431 | DELL RAPIDS SD | III | — | — | CHANNEL | Truck Tractor Semi-trailer |
KENWORTH WABASH |
1XKWDB9X35J086095 1JJV532W27L976744 |
IA FV9727 IA FT0910 |
| February 11, 2026 | W031006228 | EAGLEVILLE MO | II | — | — | RINKER | Truck Tractor Semi-trailer |
KENWORTH REITNOUER INC |
1XKDD49X8GJ467219 1RNF48A275R011266 |
IA FT0908 IA FS8922 |
| February 5, 2026 | 5005400342 | IL-75, IL | III | 3 | — | FARM CITY ELEVATOR | Truck Tractor Semi-trailer |
KENWORTH WILSON |
1XKDD49X8GJ467219 1W1K44320P7726448 |
IA FT0908 IA FX5446 |
| 392.2-SLLEWA3 | State/Local Laws - Excessive weight - More than 5000 lbs over on an axle/axle groups | |||||||||
| 392.2-SLLEWA2 | State/Local Laws - Excessive weight - 2501-5000 lbs over on an axle/axle groups | |||||||||
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | |||||||||
| February 2, 2026 | 1667000702 | WORTHINGTON MN | III | — | — | BAYER PRODUCTION SUPPLY LLC | Truck Tractor Semi-trailer |
KENWORTH WABASH |
1XKWDB9X35J086095 1JJV532W27L976744 |
IA FV9727 IA FT0910 |
| February 2, 2026 | 5610001392 | JEFFERSON SD | III | 1 | — | CALCIUM PRODUCTS | Truck Tractor Semi-trailer |
KENWORTH WILSON |
1XKDD49XXGJ467223 1W1K44127M7722119 |
IA FT0909 IA FX0037 |
| 392.2-SLLEWA2 | State/Local Laws - Excessive weight - 2501-5000 lbs over on an axle/axle groups | |||||||||
| January 28, 2026 | 1768000798 | WORTHINGTON MN | III | — | — | ADM | Truck Tractor Semi-trailer |
KENWORTH WILSON |
3WKDD49X1FF453570 1W1K44321R7728650 |
IA FS8722 IA FX1963 |
| January 12, 2026 | 5880002546 | JEFFERSON SD | III | 1 | — | MOSAIC GLOBAL | Truck Tractor Semi-trailer |
KENWORTH WILSON |
1XKZD49X0MJ442753 1W1K44125M7722118 |
IA FZ2686 IA FX0036 |
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | |||||||||
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 |
|---|---|---|
| BAYER PRODUCTION SUPPLY LLC | 4 | February 2, 2026 |
| RINKER MATERIALS | 3 | March 20, 2026 |
| MOSAIC GLOBAL SALES | 1 | April 28, 2026 |
| CHANNEL | 1 | March 3, 2026 |
| RINKER | 1 | February 11, 2026 |
| FARM CITY ELEVATOR | 1 | February 5, 2026 |
| CALCIUM PRODUCTS | 1 | February 2, 2026 |
| ADM | 1 | January 28, 2026 |
| MOSAIC GLOBAL | 1 | January 12, 2026 |
| HANSEN MUELLER | 1 | October 28, 2025 |
| CONAGRA BRANDS | 1 | October 13, 2025 |
| BAYER | 1 | February 18, 2025 |
6 more shippers named at fewer inspections.
History & Filings
Authority, insurance and process-agent records
Authority History
| Date | Status | Type |
|---|---|---|
| July 25, 1996 | GRANTED | Contract Carrier |
| July 25, 1996 | Active GRANTED | Motor Carrier of Property (Except Household Goods) |
Insurance & Revocation Filings
| Date | Type | Status |
|---|---|---|
| May 20, 2025 | BI&PD Primary/Excess | On file |
BOC-3 Process Agent
Process Agent Service Company, Inc.
945 S Marion Rd, Sioux Falls, SD, 57105
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: September 20, 2026.
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