Fleet typeIdentity
Owner-operator
1 power unit. Brokers price each fleet type apart.
Carrier profile · USDOT 1925541 · Updated Jun 13, 2026
Stephen D Ambler
DBA WHITE MOUNTAIN CONSTRUCTION
1 power unitLocal · 1 statesPORT ORCHARD, WA50/100
AUTHORITY STATUS UNKNOWN
Observed fleet · trailing 24 mo daily
1Power units
1 observed · MCS-150
—Trailers seen
None observed · 24 mo
5.0Avg age (yr)
2021–2021 · vPIC
Click to see how we scored it
Load decision · FMCSA snapshot · Jun 13, 2026
Limited record
Not enough federal record to assess. Verify authority and insurance directly.
USDOT registration1717 yr registered
Authority not on fileInsurance (BIPD)— unknown
No filing on recordVehicle OOS · 24-mo—
No inspections · 24 moCrashes · fatal00
Clean · 24 moVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersDecoding
—
Not yet decoded
Identity stabilityStable
17 yr unchanged
Same registration since 2009 — no chameleon / reincarnation signal.
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Verification summary
STEPHEN D AMBLER (USDOT 1925541) is unrated by Vektor because the carrier's FMCSA record does not contain enough evidence for a safety score as of Jun 13, 2026.
The carrier has an unknown current for-hire authority status because no FMCSA L&I authority row is available as of Jun 13, 2026.
It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available as of Jun 13, 2026.
The carrier received 1 roadside inspections in the last 24 months — 0 vehicle-level and 1 driver-level — across 1 state, according to FMCSA roadside-inspection data refreshed Jun 13, 2026.
The carrier has 0 reportable crashes in the last 24 months and 0 fatal crashes across the full FMCSA crash record available as of Jun 13, 2026.
It reports 1 power unit and 2 drivers in its most recent MCS-150 filing dated Aug 19, 2009.
It has no FMCSA-assigned safety rating in the federal record refreshed Jun 13, 2026.
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Frequently asked
What is STEPHEN D AMBLER's USDOT number?
STEPHEN D AMBLER's USDOT number is 1925541.
Is STEPHEN D AMBLER authorized to operate?
As of Jun 13, 2026, STEPHEN D AMBLER is active in the FMCSA register.
What is STEPHEN D AMBLER's safety record?
STEPHEN D AMBLER has a — vehicle out-of-service rate across 1 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor does not assign this carrier a safety score — there is not enough federal record to assess it.
How big is STEPHEN D AMBLER's fleet?
STEPHEN D AMBLER operates 1 power unit and 2 drivers per its most recent MCS-150 filing.
Where is STEPHEN D AMBLER based?
STEPHEN D AMBLER is based in PORT ORCHARD, WA, with roadside inspections recorded across 1 state.
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