DBA: Knowles Enterprises
Knowles Trucking Llc is an active interstate carrier based in Woodward, OK.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 53 | 0 | 0 |
| Tractors | 71 | 0 | 0 |
| Trailers | 80 | 0 | 0 |
| Total Power Units | 143 | ||
Distinct vehicles · 24 mo
vs 143 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 30% | 91% | Better than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 73% | 94% | Around peer average |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 100% | 94% | Worse than most peers |
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 | 2 | — | 6.67% |
| Vehicle | 0 | 93 | — | 22.26% |
| Hazmat | 67 | 0 | 0.00% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Oct 1, 2025 | 1 | 3 | 2 | 3 |
| Jul 1, 2025 | 0 | 0 | 2 | 2 |
| Jan 1, 2025 | 0 | 0 | 1 | 1 |
| Oct 1, 2024 | 0 | 1 | 2 | 2 |
| Jul 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 453 | 136 | 93 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 22, 2026 | TX | TRUCK TRACTOR | 0 | 0 |
| Mar 20, 2026 | TX | TRUCK TRACTOR | 3 | 1 |
| Mar 17, 2026 | CO | TRUCK TRACTOR | 2 | 0 |
| Mar 14, 2026 | TX | TRUCK TRACTOR | 0 | 0 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.03 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 130 | 11.25 | — |
| Driver Fitness | 2 | 0.11 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 3 states. Top state TX accounts for 78% of activity. Activity outside home state (OK): 85%.
| Hazardous Materials Compliance |
| 22 |
| 4 |
| 0 |
| Driver Fitness | 2 | 2 | 2 |
| Unsafe Driving | 1 | 1 | 0 |
| Mar 10, 2026 |
| CO |
| TRUCK TRACTOR |
| 6 |
| 3 |
| Mar 10, 2026 | TX | TRUCK TRACTOR | 2 | 0 |
| Mar 10, 2026 | TX | TRUCK TRACTOR | 0 | 0 |
| Mar 4, 2026 | TX | TRUCK TRACTOR | 3 | 0 |
| Feb 26, 2026 | TX | TRUCK TRACTOR | 4 | 0 |
| Feb 24, 2026 | TX | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 20, 2026 | 39348A | Inoperative/defective brakes | Vehicle Maintenance | Yes |
| Mar 20, 2026 | 39378 | Wipers - Inoperative / missing / damaged wipers | Vehicle Maintenance | — |
| Mar 20, 2026 | 3963A1 | Inspection repair and maintenance of parts and accessories | Vehicle Maintenance | — |
| Mar 17, 2026 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Mar 17, 2026 | 3939ALFTSI | Lighting - Front - Turn signal - inoperative | Vehicle Maintenance | — |
| Mar 10, 2026 | 39345B2BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | Vehicle Maintenance | Yes |
| Mar 10, 2026 | 39345DBAAL | Air Brake - Audible air leak at other than a proper connection | Vehicle Maintenance | Yes |
| Mar 10, 2026 | 39348ABIBD | Drum Brake - Inoperative other than a steering axle | Vehicle Maintenance | — |
| Mar 10, 2026 | 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 | — |
| Mar 10, 2026 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |