DUNCAN & SON LINES INC
Operations
What DUNCAN & SON LINES INC’s FMCSA record shows
Each field from the public registration, and what it means when you’re vetting this carrier.
- USDOT number 44035
- The USDOT number is FMCSA's permanent ID for this company. It never changes, even when the business renames, moves, or changes owners, so it's the most reliable way to identify DUNCAN & SON LINES INC.
- MC number MC 144606
- An MC (docket) number means the company applied for interstate operating authority to haul regulated freight for hire or to broker loads. Brokers and shippers usually check MC authority before booking.
- Operating status Active
- FMCSA lists this USDOT number as active. Active status alone doesn't confirm current insurance or operating authority; those are separate checks.
- Operation type Interstate
- Interstate carriers can haul freight across state lines and fall under the full federal safety rules (FMCSRs).
- Fleet size 259 power units, 231 drivers
- DUNCAN & SON LINES INC self-reports 259 power units (trucks and tractors), which makes it a large fleet. Fleet counts come from the carrier's own MCS-150 filing and aren't independently audited.
- Last MCS-150 update Feb 10, 2026
- The MCS-150 is the registration form where carriers report their address, fleet size, and operations. DUNCAN & SON LINES INC last filed it on Feb 10, 2026. That's within FMCSA's two-year update requirement, so the company details here are reasonably current.
Safety profile
FMCSA BASIC percentiles, inspection history, and out-of-service rates.
Full safety report
All 7 FMCSA BASIC percentiles, recent inspection records, vehicle & driver out-of-service rates — free with any account.
Crash history
State-reportable crashes, severity breakdown, and time-decayed analysis.
Crash history
Individual crash records with date, severity (fatal / injury / tow-away), and fleet-normalized rate.
Insurance & compliance
Active policy coverage, insurance carrier, effective dates, and historical gaps.
Insurance details
BI&PD coverage, cargo insurance, insurance carrier name, effective dates — a critical pre-booking check.
Authority & cross-reference
Authority revocation history and chameleon carrier detection across 4.4M records.
Authority & cross-reference
Every authority grant, revocation, and reinstatement — plus chameleon flags from address / officer / phone matches.
Change history
3 recorded changes to DUNCAN & SON LINES INC’s FMCSA record. Derived from monthly FMCSA Census snapshots.
270
to
259
226
to
231
Feb 18, 2025
to
Feb 10, 2026
Frequently asked questions about DUNCAN & SON LINES INC
Common questions about this carrier, answered from FMCSA public records.
Is DUNCAN & SON LINES INC a legitimate motor carrier?
DUNCAN & SON LINES INC is registered with FMCSA under USDOT number 44035. Operating authority status is currently Active. Carrier90's trust score of 90/100 yields a APPROVE verdict based on safety, insurance, authority, and crash data.
What is DUNCAN & SON LINES INC's safety score?
Carrier90 scores DUNCAN & SON LINES INC at 90 out of 100 with a APPROVE verdict. The score combines FMCSA BASIC percentiles, crash history, insurance status, operating authority, and chameleon carrier detection signals.
Where is DUNCAN & SON LINES INC based?
DUNCAN & SON LINES INC lists its physical address in BUCKEYE, AZ in FMCSA records. The physical state and city fields are provided by the carrier on their MCS-150 form.
Is USDOT 44035 active?
USDOT 44035 (DUNCAN & SON LINES INC) operating authority status is currently Active. Last verified by Carrier90 on October 15, 2026. Data is sourced from live FMCSA federal records.
How many trucks does DUNCAN & SON LINES INC operate?
DUNCAN & SON LINES INC reports 259 power units and employs 231 drivers to FMCSA. These figures come from the carrier's most recent MCS-150 filing.
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Nearby USDOT numbers
- LINZIE DOWNING DOT 44032
- DOSS MOVING & STORAGE INC DOT 44033
- R B & R E DUNCAN DOT 44034
- HENRY A DALTON DOT 44036
- DAVIS BUILDING SUPPLY DOT 44038
- DAY AND SONS LLC DOT 44039
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