Safety Measurement System - Inspection AZ4879000342 (U.S. DOT# 44035)

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United States Department of Transportation

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Use 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/.

Detailed Inspection Report as of 12/26/2025

Carrier Information

Carrier Name: Duncan & Son Lines Inc
U.S. DOT#: 44035
Carrier Address: 23860 W Us Hwy 85
Buckeye, AZ 85326

Time/Location

Report #: AZ4879000342
Report State: AZ
State: AZ
Date: 10/25/2025
Start Time: 1100
End Time: 1230
Level: I. Full
Facility: Roadside
Post Crash Inspection: No
Hazmat Placard Required: Yes

Vehicle Information

Unit	Type	Make	Plate State	Plate Number	VIN
1	Truck Tractor	KENWORTH	AZ	AL23523	1XKYD49X7PJ218329
2	Intermodal Chassis	HYUNDAI TR	AZ	TTA83Z	3H3C402S6LT871012

Carrier Violations

Vio Code	Section	Unit	OOS	Description	Included in SMS	BASIC	Reason Not Included in SMS
393.43A-TPV	393.43(a)	1	Yes	Air Brake - Inoperable Or Missing Tractor Protection Valve	Yes	Vehicle Maint.

Hazardous Material

HazMat Code	HazMat Description	Reported Quantity	Waste	Status
3	3 FLAMMABLE	No	No	A