KNOWLES TRUCKING LLC
KNOWLES ENTERPRISES
- 1246064
-
22154 US HWY 270
WOODWARD, OK 73801 - 143
- 160
- 181
Safety Rating & OOS Rates AND Licensing and Insurance
As part of FMCSA’s IT modernization strategy, we are in the process of merging our data platforms to make it easier for you to find the information you need. During this transition, please refer to the links below for additional information about this carrier.
- For licensing and insurance information, visit Motus: USDOT Registration System.
- For safety rating and Out-of-Service (OOS) rates, visit SAFER.
- If you are a motor carrier looking for your Inspection Selection System (ISS) value, log in to the FMCSA Portal.
BASIC Status
(Public Property Carrier View)
Behavior Analysis & Safety Improvement Categories (BASICs) Based on a 24-month record ending May 15, 2026
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Unsafe Driving
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Not Public Crash Indicator
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Hours-of-Service Compliance
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Vehicle Maintenance
-
Controlled Substances and Alcohol
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Not Public Hazardous Materials Compliance
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Driver Fitness
Select a BASIC icon above to get details, or view your Complete SMS Profile.
Vehicle Maintenance
On-Road Performance
11.58
Safety Event Group: 101-500 relevant vehicle inspections
Investigation Results
No Acute/Critical Violations Discovered
Carrier Measure Over Time
- Trends
This graph displays a carrier’s measure based on 24 months of on-road performance. Zero indicates the best performance. To see how the measure is calculated click here. To see how the measure relates to percentile click here. Expand for more information.
- 16
- 12
- 8
- 4
- 0
- -4
- Dec 26
- Jan 30
- Feb 27
- Mar 27
- Apr 24
- May 15
- 2025
- 2026
- 2026
- 2026
- 2026
- 2026
| Dec 26 2025 | Jan 30 2026 | Feb 27 2026 | Mar 27 2026 | Apr 24 2026 | May 15 2026 | |
|---|---|---|---|---|---|---|
| Measure | 11.30 | 11.15 | 11.52 | 11.25 | 11.10 | 11.58 |
| Measure | 0 | 0 | 0 | 0 | 0 | 0 |
Violation Summary
Vehicle Maint. Violations: 521
| Violations | Description | # Violations | # OOS Violations | Violation Severity Weight |
|---|---|---|---|---|
| 393.9 | Inoperable Required Lamp | 55 | 7 | 2 |
| 393.75(a)(3) | Tire-flat and/or audible air leak | 34 | 34 | 8 |
| 393.78 | Wipers - Inoperative / missing / damaged wipers | 31 | 0 | 1 |
| 393.47(e) | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | 20 | 0 | 4 |
| 396.5(b) | Oil and/or grease leak | 18 | 0 | 3 |
| 393.53(b) | CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | 17 | 0 | 4 |
| 393.9TS | Inoperative turn signal | 17 | 5 | 6 |
| 393.75(c) | Tire-other tread depth less than 2/32 of inch measured in a major tread groove | 15 | 1 | 8 |
| 396.3(a)1BOS | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | 15 | 15 | 0 |
| 396.3(a)(1) | Inspection, repair and maintenance of parts and accessories | 14 | 1 | 2 |
| 393.9H | Inoperable head lamps | 13 | 0 | 6 |
| 393.60(c) | Windshield - Damaged or Discolored | 12 | 0 | 1 |
| 393.83(g) | Exhaust - Discharging at a point forward or directly below the driver or sleeper compartment | 12 | 0 | 1 |
| 396.3A1B | Brakes (general) Explain: | 12 | 0 | 4 |
| 393.48(a) | Inoperative/defective brakes | 10 | 1 | 4 |
| 393.55(e) | No or Defective ABS Malfunction Indicator Lamp for trailer manufactured after 03/01/1998 | 10 | 0 | 4 |
| 393.11 | No or defective lighting devices or reflective material as required | 8 | 0 | 3 |
| 393.207(a) | Axle positioning parts defective/missing | 8 | 6 | 7 |
| 393.95(a) | No/discharged/unsecured fire extinguisher | 8 | 0 | 2 |
| 393.45B2UV | Brake Hose or Tubing Chafing and/or Kinking Under Vehicle | 7 | 0 | 4 |
| 396.17C-PI | Operating a CMV without documentation of a periodic inspection | 7 | 0 | 4 |
| 393.75(a)(1) | Tire-ply or belt material exposed | 6 | 2 | 8 |
| 393.75(a)(2) | Tire-tread and/or sidewall separation | 6 | 2 | 8 |
| 393.9A-LSLI | Lighting - Stop lamps - Any inoperative. | 6 | 0 | 6 |
| 393.11TL | Truck-Tractor lower rear mud flaps retroreflective sheeting / reflex reflective material requirements for vehicles manufactured after July 1997 | 5 | 0 | 3 |
| 393.209(e) | Power steering violations | 5 | 0 | 6 |
| 393.45D-B | Air Brake - Audible air leak at a proper connection | 5 | 0 | 4 |
| 393.45DLUV | Brake Connections with Leaks Under Vehicle | 5 | 0 | 4 |
| 393.95(f) | Emergency Equipment - Stopped vehicle warning devices missing or improper | 5 | 0 | 2 |
| 396.17(c) | Operating a CMV without proof of a periodic inspection | 5 | 0 | 4 |
| 393.207(c) | Leaf spring assembly defective/missing | 4 | 3 | 7 |
| 393.28 | Improper or no wiring protection as required | 4 | 0 | 3 |
| 393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | 4 | 0 | 2 |
| 392.2-SLLMF | State/Local Laws - Wheel (mud) flaps missing or defective | 3 | 0 | 1 |
| 393.11TU | Truck-Tractor upper body corner requirements for retroreflective sheeting or reflex reflective material for vehicles manufactured after July 1997 | 3 | 0 | 3 |
| 393.201(a) | Frame cracked / loose / sagging / broken | 3 | 1 | 2 |
| 393.207A-SAPPCBLM | Suspension - Axle positioning part cracked/broken/loose/missing. | 3 | 1 | 7 |
| 393.45 | Brake tubing and hose adequacy | 3 | 2 | 4 |
| 393.45DLPC | Brake Connections with Leaks - Connection to Power Unit | 3 | 0 | 4 |
| 393.45PC | Brake Tubing and Hose Adequacy - Connections to Power Unit | 3 | 0 | 4 |
| 393.47(a) | Inadequate brakes for safe stopping - Brake Lining condition | 3 | 0 | 4 |
| 393.75(a)(4) | Tire-cut exposing ply and/or belt material | 3 | 1 | 8 |
| 393.95(b) | Emergency Equipment - A power unit requiring fuses - missing a spare fuse for a required part or accessory (e.g., lamps required by 393.11, ABS lights or low air warning light). | 3 | 0 | 2 |
| 393.9A-LTSIR | Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit | 3 | 0 | 6 |
| 392.2WC | Wheel (Mud) Flaps missing or defective | 2 | 0 | 1 |
| 392.9A2-C | Cargo - Vehicle components or dunnage not secured | 2 | 2 | 1 |
| 393.203(c) | Hood not securely fastened | 2 | 0 | 2 |
| 393.203(e) | Cab front bumper missing/unsecured/protrude | 2 | 0 | 2 |
| 393.205(c) | Wheel fasteners loose and/or missing | 2 | 2 | 2 |
| 393.207(e) | Torsion bar cracked and/or broken | 2 | 0 | 7 |
| 393.207(f) | Air suspension pressure loss | 2 | 0 | 7 |
| 393.45B2PC | Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit | 2 | 0 | 4 |
| 393.50(c) | No means to ensure operable check valve | 2 | 0 | 4 |
| 393.53B-B | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | 2 | 0 | 4 |
| 393.55(d)(3) | No or Defective ABS Malfunction Indicator for towed vehicles on vehicles manufactured after February 2001 | 2 | 0 | 4 |
| 393.55E-B | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998 | 2 | 0 | 4 |
| 393.9(a) | Inoperative Brake Lamps | 2 | 0 | 6 |
| 393.9A-HLLH | Lighting - Headlamp(s) fail to operate on low and high beam | 2 | 0 | 6 |
| 393.9A-LFTSI | Lighting - Front - Turn signal - inoperative | 2 | 0 | 6 |
| 393.9A-LHLI | Lighting - Headlamp(s) - Any inoperative | 2 | 0 | 6 |
| 393.9A-LRLI | Lighting - Tail lamp - Any inoperative | 2 | 0 | 6 |
| 393.9T | Inoperable tail lamp | 2 | 0 | 6 |
| 396.3(a)(1) | Brake - Hole in Spring Brake Housing | 2 | 2 | 4 |
| 396.5B-HLIW | Hubs - Oil and/or Grease Leaking from hub - inner wheel | 2 | 0 | 2 |
| 396.5B-HLOW | Hubs - oil and/or Grease Leaking from hub - outer wheel | 2 | 0 | 2 |
| 396.5B-HWSLOW | Hubs - Wheel seal leaking - outer wheel | 2 | 1 | 2 |
| 393.104(d) | Damaged dunnage, chocks, cradles, shoring bars, blocking and bracing | 1 | 0 | 1 |
| 393.11A1-LRR | Lighting - Reflex reflector(s) missing or improper | 1 | 0 | 3 |
| 393.11LR | No Lower rear retroreflective sheeting or reflex reflective materials as required for vehicles manufactured after December 1993 | 1 | 0 | 3 |
| 393.19 | Inoperative/Defective Hazard Warning Lamp | 1 | 0 | 6 |
| 393.203 | Cab/body parts requirements violations | 1 | 0 | 2 |
| 393.205C-WRAWFLMIB | Wheel/Rim - Any wheel fasteners loose/missing/ineffective/broken. | 1 | 0 | 2 |
| 393.207A-STBW | Suspension - Suspension connecting rod or tracking component assembly missing the rubber bushing or the rubber bushing is worn to the extent that the component can be moved by hand along the axis of the component | 1 | 1 | 7 |
| 393.209(d) | Steering system components worn, welded, or missing | 1 | 1 | 6 |
| 393.209E-SPSLA | Steering - Power steering leaking anywhere. | 1 | 0 | 6 |
| 393.24(a) | Non-compliance with headlamp requirements | 1 | 0 | 6 |
| 393.24C-L | Lighting - Headlamp(s) improperly mounted | 1 | 0 | 6 |
| 393.45(d) | Brake connections with leaks or constrictions | 1 | 0 | 4 |
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured | 1 | 0 | 4 |
| 393.45B2-BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | 1 | 1 | 4 |
| 393.45D-BAAL | Air Brake - Audible air leak at other than a proper connection | 1 | 1 | 4 |
| 393.47(b) | Mis-matched brake chambers on same axle | 1 | 1 | 4 |
| 393.47D2-BLTBD | Drum Brake - Inadequate lining/pad thickness | 1 | 0 | 4 |
| 393.48A-BI-TSA | Brake - Inoperative on a trailer steering axle | 1 | 0 | 4 |
| 393.48A-BIBD | Drum Brake - Inoperative other than a steering axle | 1 | 0 | 4 |
| 393.48A-BMBCBD | Drum Brake - Missing/broken component(s) | 1 | 0 | 4 |
| 393.51C-BAPG | Air Brake - Inoperative/defective primary or secondary pressure gauge | 1 | 1 | 4 |
| 393.55(d)(1) | CMV not equipped with ABS malfunction circuit or signal (Truck-Tractor mfg on/after 3/1/1997; Straight Truck mfg on/after 3/1/1998) | 1 | 0 | 4 |
| 393.55D2-B | Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1, 2001 for towed vehicle. | 1 | 0 | 4 |
| 393.70B1I | Defective latching fasteners - Fasteners on either side of the vehicle are missing or ineffective | 1 | 1 | 3 |
| 393.70B1I-CDPBFL-LT20 | Coupling - Mounting plate or pivot bracket has 20% or less of the fasteners on either side missing/ineffective | 1 | 0 | 3 |
| 393.75(a) | Flat tire or fabric exposed | 1 | 1 | 8 |
| 393.75A1-TEPBM | Tires - All others - Exposed ply or belt material in tread or sidewall area | 1 | 0 | 8 |
| 393.75A3-TAOL | Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | 1 | 1 | 8 |
| 393.75C-TAOTD-LT2/32 | Tires - Less than 2/32 inch tread depth | 1 | 0 | 8 |
| 393.81-H | Horn - Inoperative or defective | 1 | 0 | 3 |
| 393.95(a)(1)(i) | Emergency Equipment (HM) - No 10 B:C (or more) fire extinguisher for quantities of hazardous materials that requires placarding. | 1 | 0 | 2 |
| 393.9A-LSLIWR | Lighting - Stop lamps - Both inoperative when required to be on | 1 | 1 | 6 |
| 396.3(a)(1) | Tie Rods / Drag Links - Defective Clamps / Holes / Missing nuts | 1 | 1 | 6 |
| 396.3(a)(1) | Tires - Use of Tire Plug or Cord | 1 | 0 | 8 |
| 396.3A1-BALAC | Brake - Audible air leak from a brake chamber | 1 | 0 | 4 |
| 396.3A1-BALR | Air Brake - Fails air loss rate test | 1 | 1 | 4 |
| 396.3A1-OAL | Other - Any air leak not attributed to the brake or suspension system. | 1 | 0 | 4 |
| 396.3A1BL | Brake system pressure loss | 1 | 1 | 4 |
| 396.3A1DSCB | Center Bearing (Carrier Bearing) Cracked / Loose / Broken / Missing | 1 | 1 | 3 |
| 396.5A-HNLOW | Hubs - No visible or measurable lubricant showing in the hub - outer wheel | 1 | 1 | 2 |
| 396.5B-HWSLIW | Hubs - Wheel seal leaking - inner wheel | 1 | 0 | 2 |
Inspection History
Vehicle Inspections: 178
Please select to view your Inspection History. You can also sort your data by Date, Report Number, Vehicle Type, etc.
| Report | Vehicle | Measure = Sum of the Total Weight (TotW) Sum of the Time Weight (TiW) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inspection Date | Number | State | Plate Number | Plate State | Type |
Severity Weight (SW) |
Time Weight (TiW) |
Total Weight (TotW) |
||
| Sum of measure weights | Sum of measure weights | 2,048 | 377 | 4,368 | ||||||
*** The sum of all violation severity weights (violation weight + out-of-service) for this inspection has been capped at 30.
Investigation Results
Vehicle Maint. Acute/Critical Violations: 0
This carrier has no Vehicle Maintenance Acute/Critical Violations to display.
Summary of Activities
The summary includes information on the 5 most recent investigations and 24 months of inspections and crash history.
- 2/7/2024 (Compliance Review)
-
181
- 33
- 148
- : 9
*Crashes listed represent a motor carrier’s involvement in reportable crashes, regardless of the carrier’s or driver’s role in the crash. Continue for details.
Continue for more Crash, Inspection & Investigation DetailsCarrier Registration
Flags
Inspection Selection System
As part of FMCSA’s IT modernization strategy, we are in the process of merging our data platforms to make it easier for you to find the information you need. During this transition, please refer to the links below for additional information about this carrier.
- For licensing and insurance information, visit Motus: USDOT Registration System.
- For safety rating and Out-of-Service (OOS) rates, visit SAFER.
- If you are a motor carrier looking for your Inspection Selection System (ISS) value, log in to the FMCSA Portal.
Enforcement Cases
(Six years as of 07/12/2026 updated monthly from FMCSA )
- Closed Date Case #
- 4/4/2024 CO-2024-0032-CO0372
- 5/23/2022 CO-2022-0045-CO0372
Tools/Resources
SMS Methodology How to Improve Request a Data ReviewFor U.S. DOT# 1246064
Complete SMS Profile Carrier History DownloadsUse of SMS Data/Information
FAST Act of 2015:
Readers should not draw conclusions about a carrier's overall safety condition simply based on the data displayed in this system. Unless a motor carrier has received an UNSATISFACTORY safety rating under part 385 of title 49, Code of Federal Regulations, or has otherwise been ordered to discontinue operations by the Federal Motor Carrier Safety Administration, it is authorized to operate on the Nation's roadways.
Safety Measurement System:
The data in the Safety Measurement System (SMS) is performance data used by the
Agency and Enforcement Community. A
symbol, based on that data, indicates that FMCSA may prioritize a motor carrier
for further monitoring.
The
symbol is not intended to imply any federal safety rating of the carrier pursuant
to 49 USC 31144. Readers should not draw conclusions about a carrier's overall safety
condition simply based on the data displayed in this system. Unless a motor carrier
in the SMS has received an UNSATISFACTORY safety rating pursuant to 49 CFR Part
385, or has otherwise been ordered to discontinue operations by the FMCSA, it is
authorized to operate on the nation's roadways.
Motor carrier safety ratings are available at http://safer.fmcsa.dot.gov and motor carrier licensing and insurance status are available at http://li-public.fmcsa.dot.gov/.