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USDOT 44035MC144606

Duncan & Son Lines Inc — compliance record

The full vetting file: federal registrations, authority history, insurance, inspections, record changes, and recent coverage — the checks a broker or shipper runs, in one place.

Vetting summary

✓

Authority age

47 years (granted 1979)

✓

Liability filing

$1M BIPD — meets the $750K federal minimum

✓

Inspections

564 on file

✓

Out-of-service

Within normal range vs national averages

✓

Email identity

Company domain, matches website

Federal identity

Registration snapshot

Legal name

Duncan & Son Lines Inc

DBA

—

Entity type

Carrier

Physical address

23860 W Us Hwy 85, Buckeye, AZ 85326

Phone

(623) 386-4511

Power units

259

Drivers

231

First on record

—

Last MCS-150 filing

—

Hazmat flag

No

Operating authority

Dockets & filings

MC144606

Common: Active · Contract: Active · Broker: Inactive

Property: ✓ · Passenger: — · HHG: — · BIPD filed: ✓ · Cargo: — · Bond: —

Authority history

  • Reinstated — Motor Property Common Carrier
  • Involuntary Revocation — Common
  • Involuntary Revocation — Contract
  • Granted — Motor Property Contract Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Property Broker
  • Involuntary Revocation — Common
  • Involuntary Revocation — Common
  • Involuntary Revocation — Common
  • Involuntary Revocation — Contract
  • Involuntary Revocation — Common
  • Involuntary Revocation — Contract
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Granted — Motor Property Common Carrier
  • Involuntary Revocation — Common
  • Involuntary Revocation — Broker

Revocation records

  • type license: BROKER · order1 serve date: 04/19/2013 · order2 type desc: INVOLUNTARY REVOCATION · order2 effective date: 05/22/2013
  • type license: COMMON · order1 serve date: 08/05/2005 · order2 type desc: INVOLUNTARY REVOCATION · order2 effective date: 09/07/2005
  • type license: CONTRACT · order1 serve date: 08/05/2005 · order2 type desc: INVOLUNTARY REVOCATION · order2 effective date: 09/07/2005
  • type license: COMMON · order1 serve date: 02/02/2005 · order2 type desc: INVOLUNTARY REVOCATION · order2 effective date: 03/07/2005

Insurance filings

91X — National Interstate Insurance Company · coverage $1M (as filed)

Out-of-service rates

Driver OOS

1.2%

National average ≈ 5.9% · 564 inspections on record

Vehicle OOS

9.4%

National average ≈ 20.9% · 564 inspections on record

Email & web forensics

✓

On-file email

julie@duncantruckingltd.com — company domain

✓

Mail host

Self-hosted / other

✓

Domain match

Email domain matches the company website

From the FMCSA on-file contact, public domain registration (RDAP), and live DNS.

Crash record — last 24 months

15

Reportable crashes

15

Tow-aways

5

With injuries

0

With fatalities

Most recent: AZ 05/2026 · AZ 04/2026 · CA 01/2026 — from the federal crash file; recordable crashes regardless of fault.

Safety record

Inspection history

2026: 1282025: 1982024: 1482023: 90
Level I — Full: 230Level II — Walk-around: 216Level III — Driver-only: 117Level IV — Special: 1
DateStateLevel
Jul 2, 2026AZLevel II — Walk-around
Jun 28, 2026MOLevel I — Full
Jun 25, 2026CALevel III — Driver-only
Jun 24, 2026ARLevel II — Walk-around
Jun 22, 2026AZLevel II — Walk-around
Jun 20, 2026NMLevel II — Walk-around
Jun 19, 2026NMLevel II — Walk-around
Jun 13, 2026MOLevel I — Full
Jun 11, 2026TXLevel II — Walk-around
Jun 10, 2026CALevel III — Driver-only
Jun 10, 2026AZLevel II — Walk-around
Jun 8, 2026CALevel I — Full
Jun 2, 2026NMLevel I — Full
Jun 1, 2026WYLevel III — Driver-only
May 31, 2026CALevel I — Full
May 28, 2026TXLevel II — Walk-around
May 26, 2026NMLevel III — Driver-only
May 26, 2026AZLevel II — Walk-around
May 26, 2026IDLevel II — Walk-around
May 26, 2026CALevel I — Full
May 23, 2026NMLevel II — Walk-around
May 21, 2026CALevel I — Full
May 21, 2026AZLevel I — Full
May 21, 2026CALevel I — Full
May 21, 2026AZLevel II — Walk-around
May 20, 2026AZLevel II — Walk-around
May 19, 2026CALevel I — Full
May 19, 2026CALevel I — Full
May 19, 2026CALevel I — Full
May 19, 2026NVLevel II — Walk-around
May 18, 2026CALevel I — Full
May 18, 2026CALevel I — Full
May 12, 2026ARLevel I — Full
May 12, 2026COLevel III — Driver-only
May 11, 2026COLevel I — Full
May 11, 2026TXLevel II — Walk-around
May 3, 2026CALevel I — Full
May 1, 2026CALevel II — Walk-around
Apr 28, 2026TXLevel I — Full
Apr 28, 2026AZLevel II — Walk-around
Apr 24, 2026WALevel II — Walk-around
Apr 22, 2026CALevel I — Full
Apr 21, 2026CALevel I — Full
Apr 20, 2026CALevel I — Full
Apr 19, 2026TXLevel III — Driver-only
Apr 19, 2026CALevel II — Walk-around
Apr 17, 2026NMLevel I — Full
Apr 16, 2026TXLevel III — Driver-only
Apr 15, 2026CALevel I — Full
Apr 13, 2026CALevel I — Full
Apr 13, 2026TXLevel I — Full
Apr 10, 2026AZLevel II — Walk-around
Apr 8, 2026AZLevel II — Walk-around
Apr 6, 2026CALevel III — Driver-only
Apr 6, 2026AZLevel II — Walk-around
Apr 6, 2026CALevel I — Full
Apr 3, 2026TXLevel II — Walk-around
Apr 1, 2026AZLevel I — Full
Apr 1, 2026CALevel II — Walk-around
Mar 31, 2026CALevel II — Walk-around
Mar 29, 2026NMLevel III — Driver-only
Mar 27, 2026CALevel I — Full
Mar 26, 2026AZLevel I — Full
Mar 25, 2026CALevel II — Walk-around
Mar 25, 2026AZLevel II — Walk-around
Mar 23, 2026CALevel II — Walk-around
Mar 23, 2026CALevel I — Full
Mar 23, 2026CALevel III — Driver-only
Mar 18, 2026TXLevel II — Walk-around
Mar 18, 2026CALevel II — Walk-around
Mar 18, 2026CALevel II — Walk-around
Mar 13, 2026CALevel III — Driver-only
Mar 11, 2026CALevel I — Full
Mar 10, 2026AZLevel II — Walk-around
Mar 10, 2026AZLevel II — Walk-around
Mar 6, 2026NMLevel II — Walk-around
Mar 6, 2026CALevel III — Driver-only
Mar 3, 2026WALevel III — Driver-only
Mar 3, 2026AZLevel II — Walk-around
Mar 2, 2026NMLevel III — Driver-only
Feb 28, 2026CALevel II — Walk-around
Feb 26, 2026CALevel II — Walk-around
Feb 26, 2026USLevel III — Driver-only
Feb 26, 2026CALevel II — Walk-around
Feb 24, 2026CALevel I — Full
Feb 23, 2026CALevel II — Walk-around
Feb 23, 2026CALevel I — Full
Feb 20, 2026AZLevel III — Driver-only
Feb 19, 2026SDLevel II — Walk-around
Feb 19, 2026CALevel II — Walk-around
Feb 19, 2026CALevel II — Walk-around
Feb 16, 2026AZLevel II — Walk-around
Feb 12, 2026CALevel I — Full
Feb 12, 2026TNLevel III — Driver-only
Feb 11, 2026CALevel III — Driver-only
Feb 11, 2026AZLevel I — Full
Feb 11, 2026CALevel I — Full
Feb 10, 2026CALevel I — Full
Feb 8, 2026TXLevel II — Walk-around
Feb 5, 2026AZLevel II — Walk-around

Most recent 100 of 564 inspections on file.

Activity log

Record changes

TenFourHQ re-syncs the federal record daily and logs every field that changes — address moves, fleet-size jumps, authority flips. Sudden changes are a classic fraud tell.

No changes recorded since TenFourHQ began tracking this company.

In the news

Recent coverage

No recent news coverage found for "Duncan & Son Lines Inc" — for most small carriers, no news is good news.

Via Google News — headlines may include similarly-named companies; verify before acting.

Vetting toolkit

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FMCSA SAFER snapshot ↗

The official company snapshot, straight from FMCSA.

FMCSA SMS safety profile ↗

Safety Measurement System — BASIC scores and crash history.

L&I authority record ↗

Licensing & Insurance: authority, insurance, and BOC-3 on file.

Search court records ↗

Quick sweep for litigation and judgments.

Sources: FMCSA Motor Carrier Census, Licensing & Insurance, inspection and revocation files at data.transportation.gov (synced daily by TenFourHQ), plus Google News. This page is a research aid, not a safety rating; records shown as published. TenFourHQ is not affiliated with FMCSA.