Freight Carrier · Buckeye, AZ
DUNCAN & SON LINES INC
23860 W US HWY 85 · Buckeye, AZ 85326
AUTHORIZED FOR:
(623) 386-4511
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- MC #144606
- USDOT #44035 USDOT Active
- 259Power Units
- 231Drivers
- CarrierEntity Type
About this carrier
DUNCAN & SON LINES INC is a Buckeye, AZ freight carrier that is authorized for: in the state of Arizona. This company has 259 truck(s) in their fleet and 231 truck drivers. Their motor carrier number is MC-144606 and their USDOT number is 44035.
Sourced from FMCSA SAFER · last filed 02/10/2026 · last updated Jun 26, 2026.Carrier Details
- Operating Status AUTHORIZED FOR:
- MCS-150 Filed 02/10/2026
- MCS-150 Mileage 23,801,483 (2025)
Authority & Operations
Operation Classification
- Authorized for Hire
Carrier Operation
- Interstate
Cargo Authorized
- General Freight
- Building Materials
- Intermodal Containers
- Grain, Feed, Hay
- Chemicals
- Refrigerated Food
- Paper Products
Operating Territory
Inspection activity Inspected in 20 states over the past 24 months: CA (232), AZ (67), NM (37), TX (17), AR (8), OK (7), TN (6), NV (5), IA (3), CO (3), KY (2), WA (2), +8 more. Home base: Buckeye, Arizona.
Safety Record
Crashes (24 mo)
-
0Fatal
- 5Injury
- 10Tow
- 15Total
Behavior Categories (BASICs)
CategoryMeasureViolations
Unsafe Driving
1.36
40
Crash Indicator
Not Public
—
Hours of Service
0.42
26
Vehicle Maintenance
2.15
97
Drugs / Alcohol
0
0
Hazmat
Not Public
—
Driver Fitness
0.1
3
Inspection Summary
- 399Total
- 252Clean
- 147With violations
24-month window ending Jun 26, 2026
Violations Cited 94 unique codes
Critical 33
- 392.2-SLLS4State/Local Laws - Speeding 15 or more miles per hour over the speed limit
- 392.2-SLLSWZState/Local Laws - Speeding work/construction zone
- 392.82DUMTDriver - Using a hand-held mobile telephone
- 393.75A3-TAOLTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS
- 393.75A1-TAORETATires - All others, has more than one ply exposed in the tread area exceeding 2 square inches.
- 393.75(a)(3)Tire-flat and/or audible air leak
- 391.11(b)(4)Driver operating a CMV without proper endorsements or in violation of restrictions
- 383.95LCDLRestriction - (CDL) - Operate a CMV in violation of a restriction.
- 383.23A2-LCDLNLicense (CDL) - Operate a CMV and does not possess a valid CDL
- 393.75(a)(1)Tire-ply or belt material exposed
- 393.75A1-TEPBMTires - All others - Exposed ply or belt material in tread or sidewall area
- 393.75C-TAOTD-LT2/32Tires - Less than 2/32 inch tread depth
- 393.207A-SAPPASSuspension - Axle positioning part cracked/broken/loose/missing resulting in axle shift
- 395.3A1-HOSPDHOS (Property) - Driving more than 11 hours following 10 consecutive hours off duty during the current 8 consecutive day period. Date and Time
- 393.207F-SASMDSuspension - Air spring/bag is missing or is detached at the top or bottom.
- 395.3A2-HOSPDITHOS (Property) - Driver driving beyond the 14 hour after coming on duty following 10 consecutive hours off duty at the time of inspection. Time
- 393.9A-LTSILighting - Turn signal - Any inoperative on the rearmost vehicle.
- 393.9A-LSLIWRLighting - Stop lamps - Both inoperative when required to be on
- 393.11A1-LRLMWRLighting - Tail lamp - Both lamps on rearmost vehicle missing when required to be on.
- 393.11A1-LSLMWRLighting - Stop lamps - Both missing when required to be on.
- 395.8A1-HOSPHOS (Property) - Failing to have a record of duty status using the method prescribed
- 393.45A-BHTBSAir Brake - Hose/tubing with a bulge/swelling when air pressure is applied
- 393.45B2-B-AIRAir Brake - Hose/tubing damaged or not secured
- 393.45B2-BHTDAir Brake - Hose/tubing damage into the outer reinforcement ply.
- 393.45B2UVBrake Hose or Tubing Chafing and/or Kinking Under Vehicle
- 393.43A-TPVAir Brake - Inoperable or missing tractor protection valve
- 393.45(b)(2)Brake hose or tubing chafing and/or kinking
- 396.3A1-BNMHBrake - Non-manufactured hole or crack in the spring brake housing section of a parking brake
- 396.5B-HWSLHubs - Wheel seal leaking
- 393.9Inoperable Required Lamp
- 391.41B10-MCMedical (Certificate) - Operating a commercial vehicle without corrective lenses or hearing aid as indicated on the driver's medical certificate
- 391.11(b)(4)Medical (Certificate) - Operating a CDL (passenger or property carrying) vehicle that is non-excepted and the driver has self-certified as excepted interstate or excepted intrastate with the state driver's licensing agency.
- 396.3(a)1BOSBrake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination
Unsafe Driving 10
- 392.2-SLLS3State/Local Laws - Speeding 11-14 miles per hour over the speed limit
- 392.16-DDriver - Failed to use seat belt while operating a CMV
- 392.2-SLLTCDState/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other
- 392.2CFailure to obey traffic control device
- 392.2-SLLFCState/Local Laws - Following too closely
- 392.2-SLLS2State/Local Laws - Speeding 6-10 miles per hour over the speed limit
- 392.2-SLLLRState/Local Laws - Lane restriction violation
- 392.2LVLane Restriction violation
- 392.2-SLLUPState/Local Laws - Unlawfully parking /leaving vehicle on roadway
- 392.22A-DDriver - Failed to activate hazard warning signal flashers
Hours of Service 16
- 395.3A2-HOSPDHOS (Property) - Driving beyond the 14 hour after coming on duty following 10 consecutive hours off duty during the current 8 consecutive day period. Date and Time
- 395.8(e)(1)PCHOS - False record of duty status driver improper use of Personal Conveyance - Not OOS
- 395.8E-HOSPDHOS (Property) - No driver may make a false report in connection with a duty status. Explain
- 395.3(a)(3)(ii)Driving beyond 8 hour driving limit since the end of the last on duty, off duty, or sleeper period of at least 30 minutes
- 395.3A2-PROPDriving beyond 14 hour duty period (Property carrying vehicle)
- 395.24D-ELDPTHOS (ELD) - On request by an authorized safety official, a driver must produce and transfer from an ELD the driver's hours of service records in accordance with the instruction sheet provided by the motor carrier
- 395.24(d)ELD cannot transfer ELD records electronically
- 395.24HOS (ELD) - ELD Form and Manner
- 395.30B1-ELDDFRHOS (ELD) - Driver failing to review records and certify the accuracy of the information.
- 395.22H2-ELDNISDTHOS (ELD) Driver failing to have instruction sheet describing the data transfer mechanisms supported by the ELD and step-by-step instructions for the driver to produce and transfer the driver's hours of service records to an authorized safety official
- 395.22G-ELDMFVHOS (ELD) - A portable ELD is not mounted in a fixed position and visible to the driver when seated in the normal driving position.
- 395.22H4Driver failed to maintain supply of blank drivers records of duty status graph-grids
- 395.24C2II-ELDTNHOS (ELD) - Driver failing to manually input or verify CMV trailer number.
- 395.24C2IIIDriver failed to manually add shipping document number
- 395.30B1Driver failed to certify the accuracy of the information gathered by the ELD
- 395.8(a)HOS (Form) - Paper Log/Logging Programs Form and Manner
Vehicle Maintenance 35
- 393.9A-LHLILighting - Headlamp(s) - Any inoperative
- 393.9A-LSLILighting - Stop lamps - Any inoperative.
- 393.9A-LBLLighting - Backup lamp inoperative
- 393.9A-LFTSILighting - Front - Turn signal - inoperative
- 393.9A-LHWSLighting - Hazard warning signal(s) inoperative
- 393.9A-LRLILighting - Tail lamp - Any inoperative
- 393.45D-BAir Brake - Audible air leak at a proper connection
- 393.55E-BAir Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998
- 393.48A-BMBCBDDrum Brake - Missing/broken component(s)
- 393.40A-BBrake - Inadequate braking system
- 396.3A1-ALBVAir Brake - Any leak from a brake valve
- 396.3A1-BARSAir Brake - Air reservoir separated from its original attachment points or moving more than 1 inch
- 393.55C2-BAir 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.
- 393.45B2-BAir brake - Hose/tubing damaged or not secured
- 396.17(c)Operating a CMV without proof of a periodic inspection
- 396.3A1-BALACBrake - Audible air leak from a brake chamber
- 393.45DLPCBrake Connections with Leaks - Connection to Power Unit
- 393.45DLUVBrake Connections with Leaks Under Vehicle
- 393.47(e)Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt
- 393.11A1-CSLRRConspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 1997
- 396.5(b)Oil and/or grease leak
- 396.5B-LLubrication - Oil or grease leak
- 393.11No or defective lighting devices or reflective material as required
- 393.95A4-EEUSEmergency Equipment - Fire Extinguishers - unsecured
- 393.9A-LILLighting - Identification lamp(s) inoperative
- 393.9A-LSMLLighting - Side marker lamp(s) inoperative
- 393.205C-WRAWFLMIBWheel/Rim - Any wheel fasteners loose/missing/ineffective/broken.
- 393.11A1-LCLLighting - Clearance lamp(s) missing
- 393.93B-SBASeatbelts - Trucks and truck-tractors not equipped/defective
- 393.95(a)No/discharged/unsecured fire extinguisher
- 393.9A-LCLLighting - Clearance lamp(s) inoperative
- 393.9A-LLPLLighting - License plate lamp inoperative
- 392.2-SLLMFState/Local Laws - Wheel (mud) flaps missing or defective
- 393.60EWindshield - Obstructed
- 393.60(d)Windshield / Windows - Tinting permits less than 70% of light transmittance
Locations
Physical Address
DUNCAN & SON LINES INC23860 W US HWY 85
BUCKEYE, AZ 85326
Mailing Address
Same as physical.