GRABOW & SONS INC
USDOT 2982435 • 14646 472ND AVE, TWIN BROOKS, SD, 57269
ACTIVEMotor Carrier
Authority:1 active
Insurance:None on file
BOC-3:On file
Safety Rating:Not rated
MCS-150:Never updated
OOS Orders:None
Overview
Company profile from FMCSA Census File
USDOT
2,982,435
Status
ACTIVE
Operation
Interstate
Business Type
Motor Carrier
State
Phone
6058804204
Email
Power Units (MCS-150)
3
Drivers (MCS-150)
3
MCS-150 Mileage
80,000
BOC-3 Agent
Physical Address
14646 472ND AVE, TWIN BROOKS, SD, 57269
Contact
Phone: 6058804204
Email: [email protected]
Risk Signals1 flagged
HIGH
No insurance filings on record
This for-hire carrier has no insurance filings in the FMCSA database — a critical compliance gap.
Signals are auto-detected from FMCSA public records. This is not a regulatory determination.
Authority & Insurance
Operating authority, insurance filings, and BOC-3 status
Contract Carrier — Active
Active Authority
1
Revoked / Inactive
0
Authority Types
1
Insurance Policies
None on file
BOC-3 Filing
On file
Operating Authority
fmcsa-authhistApr 5, 2026
| Authority Type | Docket # | Status | Original Date | Final Date |
|---|---|---|---|---|
| Contract Carrier | MC-1032764 | ACTIVE | Unknown | Unknown |
No insurance filings found for this carrier in FMCSA records.
Authority Action History (1 events)
fmcsa-authhist-blob
| Docket | Authority Type | Original Action | Served Date | Disposition | Decided Date |
|---|---|---|---|---|---|
| MC1032764 | MOTOR PROPERTY CONTRACT CARRIER | GRANTED | Apr 26, 2019 | — | Unknown |
Safety & Inspections
SMS BASIC scores, inspection history, and out-of-service rates
SMS BASIC Scores
Hours of Service
N/A
Unsafe Driving
N/A
Higher percentile = worse safety performance relative to peers. Scores at or above 75% trigger FMCSA alerts.
Inspections
9
Violations
14
4 OOS
Vehicle OOS %
33.3%
Above nat'l avg (23.4%)
Driver OOS %
11.1%
Above nat'l avg (6.7%)
Power Units (MCS-150)
3
Drivers (MCS-150)
3
Crash Records
1
Inspection Activity (24 months)
Monthly inspection counts with OOS months highlighted. Hover bars for details.
May
Jun
1
Jul
Aug
Sep
Oct
Nov
1
Dec
Jan
1
Feb
2
Mar
Apr
1
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Clean monthMonth with OOSBased on latest 9 of 9 inspection records
Inspection Activity Map
6 states • 9 inspections
None Low Medium High🚛 Home base
Violation Summary (14 violations from 9 inspections)
fmcsa-inspection-file
| Code | Description | # Violations | # OOS | Severity Wt | BASIC |
|---|---|---|---|---|---|
| FMCSR:392.2-SLLEQP | Operating a CMV while ill or fatigued | 3 | 0 | 8 | Unsafe Driving |
| FMCSR:393.45 | Brake tubing/hoses inadequate | 1 | 1 | 7 | Vehicle Maintenance |
| FMCSR:393.9 | Inoperable Required Lamp | 1 | 0 | — | Vehicle Maintenance |
| FMCSR:393.9T | Inoperable tail lamp | 1 | 0 | — | Vehicle Maintenance |
| FMCSR:392.2RG | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:383.23A2-LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | 1 | 1 | — | Driver Fitness |
| FMCSR:392.2-SLL | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:393.106C1-C | Cargo securement - front end structure | 1 | 1 | 5 | Vehicle Maintenance |
| FMCSR:392.2 | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:393.95(a) | Emergency equipment - fire extinguisher missing/defective | 1 | 0 | 5 | Vehicle Maintenance |
| FMCSR:393.45(b)(2) | Brake tubing/hoses inadequate | 1 | 0 | 7 | Vehicle Maintenance |
| FMCSR:393.47(b) | Brake actuators/chambers defective | 1 | 1 | 7 | Vehicle Maintenance |
Peer Context
This carrier vs national averages. Lower is better for all metrics.
Vehicle OOS Rate
33.3%vs nat'l 23.4%
+9.9 pts above avg
Driver OOS Rate
11.1%vs nat'l 6.7%
+4.4 pts above avg
Violations / Inspection
1.56vs nat'l 1.80
-0.24 below avg
National averages: vehicle OOS 23.4%, driver OOS 6.7%, violations per inspection ~1.8. Based on FMCSA MCSAP program data.
Inspection History (9 inspections)
fmcsa-inspectionsApr 5, 2026
| Date | Report # | Station | State | Level | Vehicle | Violations | Top Codes | OOS |
|---|---|---|---|---|---|---|---|---|
| May 16, 2025 | 84723149 | CLEARWATER MT | MT | Level 3 | INTERNATIO TRUCK TRACTOR | 0 | — | No |
| Mar 18, 2025 | 84244469 | US 87 AND 33RD STREE | TX | Level 2 | INTI TRUCK TRACTOR | 4 | 393.45, 393.9, 393.9T | Yes |
| Mar 11, 2025 | 84115129 | BRISTOL SD | SD | Level 3 | FREIGHTLIN TRUCK TRACTOR | 5 | 392.2-SLLEQP, 383.23A2-LCDLN, 392.2-SLL | Yes |
| Feb 19, 2025 | 83920516 | RATON PORT OF ENTRY | NM | Level 3 | INTL TRUCK TRACTOR | 0 | — | No |
| Dec 13, 2024 | 83394540 | HAUGAN MT | MT | Level 2 | TRANSCRAFT SEMI-TRAILER | 1 | 393.106C1-C | Yes |
| Jul 22, 2024 | 82232700 | MONUMENT CO | CO | Level 3 | INTERNATIO TRUCK TRACTOR | 0 | — | No |
| Jan 24, 2024 | 80682893 | ANDOVER SD | SD | Level 3 | WILSON TRA SEMI-TRAILER | 0 | — | No |
| Sep 27, 2023 | 79778771 | HENRY SD | SD | Level 3 | FREIGHTLIN TRUCK TRACTOR | 0 | — | No |
| May 26, 2023 | 78799124 | MAYVIEW, MO | MO | Level 1 | INTL TRUCK TRACTOR | 4 | 392.2, 393.95(a), 393.45(b)(2) | Yes |
Inspection analytics
Monthly cadence, frequent stations, and violation mix
Inspections per month (24 mo)
6 total · 50.0% OOS
2024-072025-05
InspectionsOOS
Most frequent inspection stations
Violations by BASIC category
Recent Crashes
1 crash record from FMCSA Crash File
Total Crashes
1
Fatalities
0
Injuries
1
Across 1 crash
Tow-Aways
1
Crash History (1 records)
fmcsa-crash-fileApr 5, 2026
| Date | State | Severity | Fatalities | Injuries | City | Location | VIN | Carrier Name at Crash |
|---|---|---|---|---|---|---|---|---|
| Jan 18, 2019 | WY | INJURY | 0 | 1 | — | — | — | — |
Compliance Timeline
1 event merged from authority, insurance, enforcement, OOS, crash, MCS-150, and safety rating records
Related Records
Related records
StateAll entities in South Dakota
Browse carriers, brokers, and FFs in SD
CityEntities in TWIN BROOKS, SD
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AuthorityMC-1032764 Certificate
Contract Carrier — Download free PDF
Crashes1 crash records
FMCSA Crash File
Inspections9 inspection records
Full inspection history
StationCLEARWATER MT
1 inspection at this station
StationUS 87 AND 33RD STREE
1 inspection at this station
StationBRISTOL SD
1 inspection at this station
BOC-3 AgentPROCESS AGENT SERVICE COMPANY, INC.
Process agent on file
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FMCSA Insurance Filings
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FMCSA Vehicle Inspection File
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Refresh dataLast updated: Apr 5, 2026