Jim Brock Trucking Inc is an active interstate carrier based in Huron, SD.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 32 | 0 | 0 |
| Tractors | 32 | 0 | 0 |
| Trailers | 198 | 0 | 0 |
| Total Power Units | 32 | ||
Distinct vehicles · 24 mo
vs 32 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 88% | 95% | Worse than most peers |
| HOS Compliance | 75% | 94% | Worse than most peers |
| Driver Fitness | 81% | 94% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 56% | 83% | Around peer average |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 4 | — | 6.67% |
| Vehicle | 0 | 3 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Apr 1, 2025 | 0 | 1 | 1 | 1 |
| Oct 1, 2024 | 0 | 1 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 21 | 9 | 3 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 23, 2026 | SD | TRUCK TRACTOR | 1 | 0 |
| Mar 19, 2026 | MN | TRUCK TRACTOR | 0 | 0 |
| Mar 3, 2026 | SD | TRUCK TRACTOR | 0 | 0 |
| Feb 19, 2026 | MN | TRUCK TRACTOR | 1 | 0 |
| Feb 15, 2026 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 10 | 3.18 | — |
| HOS Compliance | 11 | 0.56 | — |
| Vehicle Maintenance | 11 | 3.12 | — |
| Driver Fitness | 2 | 0.17 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 6 states. Top state ND accounts for 42% of activity. Activity outside home state (SD): 63%.
+1 other state with fewer inspections
| Hours-of-Service Compliance |
| 11 |
| 7 |
| 3 |
| Unsafe Driving | 11 | 4 | 0 |
| Driver Fitness | 3 | 1 | 2 |
| ND |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Feb 12, 2026 | ND | TRUCK TRACTOR | 0 | 0 |
| Feb 4, 2026 | SD | TRUCK TRACTOR | 2 | 1 |
| Jan 28, 2026 | ND | TRUCK TRACTOR | 0 | 0 |
| Jan 7, 2026 | MN | TRUCK TRACTOR | 0 | 0 |
| Dec 24, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 23, 2026 | 39524 | HOS (ELD) - ELD Form and Manner | Hours-of-Service Compliance | — |
| Feb 19, 2026 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Feb 4, 2026 | 393207ASAPPCBLM | Suspension - Axle positioning part cracked/broken/loose/missing. | Vehicle Maintenance | — |
| Feb 4, 2026 | 393207FSDAS | Suspension - Deflated air suspension | Vehicle Maintenance | Yes |
| Oct 31, 2025 | 3939ALBL | Lighting - Backup lamp inoperative | Vehicle Maintenance | — |
| Oct 31, 2025 | 3953A3II | 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-of-Service Compliance | — |
| Jul 10, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Jul 10, 2025 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Jul 10, 2025 | 39353BB | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| Jul 7, 2025 | 39141B10MC | Medical (Certificate) - Operating a commercial vehicle without corrective lenses or hearing aid as indicated on the driver's medical certificate | Driver Fitness | Yes |