DUNCAN & SON LINES INC

USDOT 44035 · status active · 6 pass / 1 fail / 2 unknown

What this page is. A rendering of FMCSA public records on a stated date. Not a safety rating, credit score, or recommendation. Source: Company Census File (az4n-8mr2, updated 2026-10-21, sha256 73d4c5901abe8cdb…).

Checks

PASS authority_active
Registration active in the census record.

fields: status_code
UNKNOWN allowed_to_operate
Not queried. Requires the live FMCSA API; the census file does not carry this field. We never default it to pass.

fields: allowed_to_operate
UNKNOWN bipd_on_file
Absence from the gap release is not proof of coverage; the release only lists carriers with no filing. Query the live API to confirm.

fields: bipd_file
PASS mcs150_current
Last MCS-150 filing 2026-02-10.

fields: mcs150_date
PASS contact_complete
Phone and email both on file.

fields: phone, email_address
PASS shared_identifier_suppressed
No suppressed identifier on this record.

fields: phone, phy_street
FAIL no_involuntary_revocation
4 involuntary revocation(s) in the FMCSA history. This is a historical fact, not current status - the carrier may hold valid authority again today. Check the authority check above.

fields: dot_number
PASS out_of_service_order
No out-of-service order in the FMCSA record.

fields: dot_number
PASS authority_age
Registered 1974-06-01 (19137 days ago, ~52.4 years). Context only; new authority is a higher-risk cohort, not a verdict.

fields: add_date

Identity

Legal name	DUNCAN & SON LINES INC Company Census File
DBA	— Company Census File
MC number	144606 Company Census File
Registration status	A Company Census File
Operation type	A Company Census File
Registered since	1974-06-01 Company Census File

Contact

Phone	6233864511 Company Census File
Email	julie@duncantruckingltd.com Company Census File
Officer 1	DAVID DUNCAN Company Census File
Officer 2	JULIE SMITH Company Census File

Address

Street	23860 W US HWY 85 Company Census File
City	BUCKEYE Company Census File
State	AZ Company Census File
ZIP	85326 Company Census File
Country	US Company Census File

Fleet (self-reported on MCS-150)

Truck units	259 Company Census File
Power units	259 Company Census File
Drivers	231 Company Census File
CDL drivers	231 Company Census File
Intrastate drivers	0 Company Census File
Last MCS-150 filing	2026-02-10 Company Census File

Related carriers

No other active carrier shares this carrier's officer and address in the public record.

Safety history

Counts from FMCSA inspection and crash records, all history on file. Not a safety rating; FMCSA assigns ratings only after an on-site review.

Inspections	592 driver 133 · vehicle 259
Out-of-service	68 (11.5% of inspections) driver 10 · vehicle 58
Violations	416
Inspection span	2023-10-23 – 2026-10-15
Crashes	144 fatal 6 · injury 31 · tow-away 142
Crash span	2000-09-19 – 2026-07-16

Rulebook v1 · JSON