DUNCAN & SON LINES INC
USDOT 44035
Active, interstate carrier, large fleet (259 power units) — safety rating: satisfactory.
Vetting summary
At a glance
- Out-of-service rate11.1% vs 19.1% national avg
- Crashes (24 months)15 reported — involvement does not imply fault
- Linked registrations5 share this carrier's phone or address
These signals summarize the records shown below — they are a starting point for your own checks, not a judgment of the carrier.
Registration
Carrier identity
| USDOT Number | 44035 |
|---|---|
| MC Number | MC-144606 |
| Legal Name | DUNCAN & SON LINES INC |
| DBA Name | — |
| Entity Type | CORPORATION |
| Phone | 6233864511 |
| Address | 23860 W US HWY 85, Buckeye, AZ, 85326 |
Status
Authority & safety
| Operating Status | Active |
|---|---|
| Operation Type | Interstate |
| Safety Rating | S — Satisfactory (rated 20101013) |
| Hazmat Flag | true |
Safety ratings: S = Satisfactory, C = Conditional, U = Unsatisfactory. A carrier with no rating has not been through a full FMCSA compliance review — this is common and not itself a red flag.
Our scoring
Safety scores
| Unsafe Driving | 83 / 100 |
|---|---|
| Hours-of-Service Compliance | 86 / 100 |
| Driver Fitness | 86 / 100 |
| Controlled Substances & Alcohol | 0 / 100 |
| Vehicle Maintenance | 69 / 100 |
Scores are 0-100 rankings computed by us from public FMCSA inspection measures; higher = worse relative to peers. Not official CSA/BASIC percentiles. How these scores are computed.
Safety events
Inspections & crashes (last 24 months)
| Inspections | 407 |
|---|---|
| Out-of-Service Rate | 11.1% vs 19.1% national average |
| Crashes | 15 total (0 fatal, 5 with injuries, 15 towaway) |
- 2026-05-27 — AZ — towaway
- 2026-04-29 — AZ — towaway
- 2026-01-31 — CA — 1 injured, towaway
- 2025-11-12 — AZ — towaway
- 2025-10-09 — AZ — towaway
Most frequent violation categories: 16 (55), 12 (41), 7 (38).
Crash involvement does not imply fault. FMCSA crash records list all reportable crashes involving a carrier, regardless of who caused them.
Signals
Linked registrations
5 other active carrier registrations share this carrier's phone or address in FMCSA records.
USDOT 1582145 · USDOT 2229816 · USDOT 4076484 · USDOT 4125375 · USDOT 4184471
Shared contact details can have many ordinary explanations, such as a shared dispatch service, registration agent, or office address.
Equipment
Fleet & operations
| Power Units (trucks) | 259 |
|---|---|
| Drivers | 231 |
| Recent Annual Mileage | 23,801,483 |
| Last MCS-150 Filing | 10-FEB-26 |
DUNCAN & SON LINES INC operates 259 power units — a larger fleet than 100% of carriers registered in AZ.
Nearby
Other carriers in Buckeye, AZ
- HICKMAN'S EGG RANCH INC — USDOT 495506, 78 power units
- WINGFIELD LIVESTOCK TRANSPORTATION INC — USDOT 131031, 20 power units
- WESTERN PILOT SERVICE — USDOT 587758, 17 power units
- TRINDAD PEREZ — USDOT 201626, 11 power units
- PIERCE AVIATION INC — USDOT 521665, 6 power units
Browse all carriers in Buckeye, AZ or all AZ carriers.