DUNCAN & SON LINES INC
- 44035
-
23860 W US HWY 85
BUCKEYE, AZ 85326 - 270
- 226
- 349
Safety Rating & OOS Rates
(As of 02/20/2026 updated daily from SAFER )
Out of Service Rates
| Type | OOS % | National Avg % |
|---|---|---|
| Vehicle | 11.9 | 23.2 |
| Driver | 0.8 | 6.4 |
| Hazmat | 0.0 | 4.4 |
Licensing and Insurance
(As of 02/20/2026 updated hourly from L&I )
| Type | Yes/No | MC#/MX# |
|---|---|---|
| Property | Yes | MC-144606 |
| Passenger | No | |
| Household Goods | No | |
| Broker | No |
BASIC Status
(Public Property Carrier View)
Behavior Analysis & Safety Improvement Categories (BASICs) Based on a 24-month record ending January 30, 2026
-
Unsafe Driving
-
Not Public Crash Indicator
-
Hours-of-Service Compliance
-
Vehicle Maintenance
-
Controlled Substances and Alcohol
-
Not Public Hazardous Materials Compliance
-
Driver Fitness
Select a BASIC icon above to get details, or view your Complete SMS Profile.
Vehicle Maintenance
On-Road Performance
1.78
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.
- 4
- 3
- 2
- 1
- 0
- -1
- Aug 29
- Sep 26
- Oct 31
- Nov 28
- Dec 26
- Jan 30
- 2025
- 2025
- 2025
- 2025
- 2025
- 2026
| Aug 29 2025 | Sep 26 2025 | Oct 31 2025 | Nov 28 2025 | Dec 26 2025 | Jan 30 2026 | |
|---|---|---|---|---|---|---|
| Measure | 1.66 | 1.59 | 1.63 | 1.77 | 1.87 | 1.78 |
| Measure | 0 | 0 | 0 | 0 | 0 | 0 |
Violation Summary
Vehicle Maint. Violations: 91
| Violations | Description | # Violations | # OOS Violations | Violation Severity Weight |
|---|---|---|---|---|
| 393.75A3-TAOL | Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | 11 | 11 | 8 |
| 393.11A1-CSLRR | Conspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 1997. | 7 | 0 | 3 |
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured. | 7 | 2 | 4 |
| 393.45D-B | Air Brake - Audible air leak at a proper connection. | 7 | 0 | 4 |
| 393.48A-BMBCBD | Drum Brake - Missing/broken component(s). | 3 | 0 | 4 |
| 393.55E-B | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998. | 3 | 0 | 4 |
| 393.9A-LIL | Lighting - Identification lamp(s) inoperative. | 3 | 0 | 2 |
| 392.2-SLLMF | State/Local Laws - Wheel (mud) flaps missing or defective. | 2 | 0 | 1 |
| 393.207A-SAPPAS | Suspension - Axle positioning part cracked/broken/loose/missing resulting in axle shift. | 2 | 2 | 7 |
| 393.40A-B | Brake - Inadequate braking system. | 2 | 0 | 4 |
| 393.45 | Brake tubing and hose adequacy | 2 | 2 | 4 |
| 393.45A-BHTBS | Air Brake - Hose/tubing with a bulge/swelling when air pressure is applied. | 2 | 2 | 4 |
| 393.45B2-BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | 2 | 1 | 4 |
| 393.45B2UV | Brake Hose or Tubing Chafing and/or Kinking Under Vehicle | 2 | 1 | 4 |
| 393.95A4-EEUS | Emergency Equipment - Fire Extinguishers - unsecured. | 2 | 0 | 2 |
| 393.9A-LHLI | Lighting - Headlamp(s) - Any inoperative. | 2 | 0 | 6 |
| 393.9A-LSML | Lighting - Side marker lamp(s) inoperative. | 2 | 0 | 2 |
| 396.3A1-BARS | Air Brake - Air reservoir separated from its original attachment points or moving more than 1 inch | 2 | 0 | 4 |
| 396.5B-HWSL | Hubs - Wheel seal leaking. | 2 | 1 | 2 |
| 393.11A1-LCL | Lighting - Clearance lamp(s) missing. | 1 | 0 | 2 |
| 393.11A1-LSLMWR | Lighting - Stop lamps - Both missing when required to be on. | 1 | 1 | 6 |
| 393.205C-WRAWFLMIB | Wheel/Rim - Any wheel fasteners loose/missing/ineffective/broken. | 1 | 0 | 2 |
| 393.207(a) | Axle positioning parts defective/missing | 1 | 1 | 7 |
| 393.43A-TPV | Air Brake - Inoperable or missing tractor protection valve | 1 | 1 | 4 |
| 393.45(b)(2) | Brake hose or tubing chafing and/or kinking | 1 | 1 | 4 |
| 393.45B2-B | Air brake - Hose/tubing damaged or not secured | 1 | 0 | 4 |
| 393.45B2PC | Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit | 1 | 0 | 4 |
| 393.45DLPC | Brake Connections with Leaks - Connection to Power Unit | 1 | 0 | 4 |
| 393.45DLUV | Brake Connections with Leaks Under Vehicle | 1 | 0 | 4 |
| 393.47(e) | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | 1 | 0 | 4 |
| 393.48(a) | Inoperative/defective brakes | 1 | 1 | 4 |
| 393.55(e) | No or Defective ABS Malfunction Indicator Lamp for trailer manufactured after 03/01/1998 | 1 | 0 | 4 |
| 393.55C2-B | Air Brake - CMV other than truck-tractor manufactured on or after March 1, 1998 not equipped with an antilock brake system. System does not function or indicates a fault. | 1 | 0 | 4 |
| 393.75(a)(1) | Tire-ply or belt material exposed | 1 | 0 | 8 |
| 393.75(a)(3) | Tire-flat and/or audible air leak | 1 | 1 | 8 |
| 393.9A-LFTSI | Lighting - Front - Turn signal - inoperative. | 1 | 0 | 6 |
| 393.9A-LLPL | Lighting - License plate lamp inoperative. | 1 | 0 | 2 |
| 393.9A-LRLI | Lighting - Tail lamp - Any inoperative. | 1 | 0 | 6 |
| 393.9A-LSLIWR | Lighting - Stop lamps - Both inoperative when required to be on. | 1 | 1 | 6 |
| 396.17(c) | Operating a CMV without proof of a periodic inspection | 1 | 0 | 4 |
| 396.3(a)1BOS | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination. | 1 | 1 | 0 |
| 396.3A1-ALBV | Air Brake - Any leak from a brake valve. | 1 | 0 | 4 |
| 396.3A1-BALAC | Brake - Audible air leak from a brake chamber | 1 | 0 | 4 |
| 396.3A1-BNMH | Brake - Non-manufactured hole or crack in the spring brake housing section of a parking brake. | 1 | 1 | 4 |
| 396.5(b) | Oil and/or grease leak | 1 | 0 | 3 |
Inspection History
Vehicle Inspections: 274
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 | 457 | 529 | 943 | ||||||
*** 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.
- 3/19/2025 (Non-Ratable Review)
-
349
- 222
- 127
- : 15
*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
Carrier Registration Details Subject to Hazmat Threshold Update Registration InfoEnforcement Cases
(Six years as of 02/20/2026 updated monthly from FMCSA )
No penalties found
Tools/Resources
SMS Methodology How to Improve Request a Data ReviewFor U.S. DOT# 44035
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/.