Carrier profile · USDOT 1246064 · MC-667980 · Updated Jun 13, 2026

Knowles Trucking LLC

DBA KNOWLES ENTERPRISES

124 power unitsavg 13.4 yrRegional · 3 statesWOODWARD, OK74/100
CARRIER ACTIVEMC-667980 ACTIVERATED CONDITIONALHAZMAT
Verified linksknowlestransportation.comFMCSA SAFER

Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 41.5%24-mo cumulative
050%nat'l 22.26%
Driver OOS 1.0%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 195 vehicle and 200 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

36.7% · latest 6-mo window▲ Rising

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending up 11.5 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

200 inspections in the charted months · busiest month Feb '26 · 18

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Well-monitored
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.8 / unit·yr
thin signalabundant signal
Within the expected band for a 124-unit fleet — FMCSA has inspected this carrier often enough that the out-of-service and violation signals above are statistically trustworthy.
Registered power units
124
Inspections · 24 mo
200
Annualized
≈100 / yr
Coverage
≈0.8 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

Unsafe Driving
.06measure
SMS · per-BASIC
Hours-of-Service
0violations
clean · per-BASIC
36%
Driver Fitness
Vektor peer est.
Controlled Substances
0violations
clean · per-BASIC
94%
Vehicle Maintenance
Vektor peer est.

Percentile = standing among same-exposure peers (higher = worse). FMCSA publishes percentiles for only some carriers (shown official); elsewhere we show a Vektor peer-percentile estimate, or the absolute SMS measure when there are too few inspections to rank.

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

  • 393.9 Inoperative required lampsVehicle Maintenance171 · 17 OOS
  • 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance89 · 54 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance88 · 39 OOS
  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving84 · 0 OOS
  • 393.47 Brake actuators / linings / componentsVehicle Maintenance62 · 2 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance54 · 8 OOS
  • 393.78 Windshield wipersVehicle Maintenance39 · 0 OOS
  • 396.5 Oil and/or grease leakVehicle Maintenance37 · 2 OOS
  • 393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance33 · 0 OOS
  • 396.17 Periodic (annual) inspectionVehicle Maintenance32 · 0 OOS

ELD & hours-of-service

3 hours-of-service / ELD violations on record · most recent Nov 28, 2023. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

3ELD device issues
0No log / no ELD
0False logs
0Drove over hours

0 ELD violations in the last 24 months.

Crash history· 43 total · 10 in 24 mo

43
Total crashes
10
In last 24 mo
2
Fatal
21
Injury
YearCrashesFatalInjuryTow
20261011
20256135
20243013
20232012
20222012
20216055
20202012
20193123
20181011
20161001
20152002
20141001
20131011
20121011
20111011
20106016
20091001
20081011
20072002
DateStateFatalitiesInjuriesTow-away
May 22, 2026OK01Yes
Dec 21, 2025TX01No
Dec 11, 2025TX11Yes
Nov 25, 2025CO01Yes
Sep 21, 2025OK00Yes
Sep 9, 2025TX00Yes
Mar 5, 2025OK00Yes
Dec 9, 2024TX00Yes
Oct 14, 2024OK01Yes
Sep 5, 2024TX00Yes
Jun 30, 2023OK01Yes
Apr 7, 2023OK00Yes
Aug 18, 2022TX01Yes
Jun 16, 2022TX00Yes
Nov 21, 2021CO01Yes
Aug 10, 2021CO01Yes
May 5, 2021TX01No
May 1, 2021TX01Yes
Apr 7, 2021OK00Yes
Mar 13, 2021CO01Yes
Aug 6, 2020CO01Yes
Mar 19, 2020TX00Yes
Oct 21, 2019TX20Yes
Aug 15, 2019TX01Yes
Apr 16, 2019CO01Yes