Carrier profile · USDOT 6789 · FMCSA profile data as of Nov 3, 2026

Thos Somerville Co

77 power unitsavg 2.5 yrMulti-region · 8 statesUPPER MARLBORO, MD84/100

AUTHORITY STATUS UNKNOWNRATED SATISFACTORYHAZMAT

Observed fleet · trailing 24 mo daily

77Power units

50 observed · MCS-150

—Trailers seen

None observed · 24 mo

2.5Avg age (yr)

2017–2026 · vPIC

Call dispatch(301) 390-9575 Email dispatchshirley

Click to see how we scored it

Load decision · FMCSA profile data as of Nov 3, 2026

Review before loading

Operating, but with flags a broker should weigh before tendering freight.

Watch · 2

Fatal crash on record1 crash(es) involving a fatality are on this carrier's record.MCS-150 update dueThe biennial MCS-150 update is overdue.

In good standing · 2

Established 52 yearsOperating authority has been on file since 1974.Out-of-service rates below national averageBoth vehicle and driver OOS rates beat the national benchmark across 138 inspections.

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo10.8%

▼ 22.26% nat'l

Crashes · fatal

1 in 24 mo

Vektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots

Fleet typeIdentity

Asset-based

77 power units. Brokers price each fleet type apart.

Fleet age vs peersNewer

2.5 yr

Model years 2017–2026 · peer benchmark unavailable.

Identity stabilityStable

52 yr unchanged

Same registration since 1974 — no chameleon / reincarnation signal.

Cross-border activity

No border inspections on record

A named inspection location does not confirm a border transit or operating authority. Counts cover retained inspection records.

Safety

92 inspections · 24 mo · vs national benchmarks

FMCSA safety data as of Nov 7, 2026

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 10.8%24-mo cumulative

050%nat'l 22.26%

Driver OOS 3.3%24-mo cumulative

030%nat'l 6.67%

Every inspection in the window pooled — 74 vehicle and 92 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

21.4% · latest 6-mo window● Steady

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Holding steady across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

90 inspections in the charted months · busiest month Dec '24 · 10

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Expected band

Under-inspected

Expected

Well-monitored

Heavily inspected

≈0.6 / unit·yr

thin signalabundant signal

Roadside-inspection volume is about what you'd expect for a 77-unit fleet — enough signal to read the safety record, though not a heavy sample.

Registered power units: 77
Inspections · 24 mo: 92
Annualized: ≈46 / yr
Coverage: ≈0.6 inspections / unit · yr

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving24 · 0 OOS
393.9 Inoperative required lampsVehicle Maintenance20 · 3 OOS
391.41 No / expired medical certificateDriver Fitness7 · 3 OOS
390.21 USDOT number marking on vehicleUnsafe Driving6 · 0 OOS
393.47 Brake actuators / linings / componentsVehicle Maintenance5 · 0 OOS
396.3 Inspection / repair / maintenance not performedVehicle Maintenance5 · 5 OOS
393.75 Tires (defective / underinflated / worn)Vehicle Maintenance4 · 4 OOS
392.82 Using a hand-held mobile phoneUnsafe Driving3 · 0 OOS
393.53 Automatic brake adjusters / indicatorsVehicle Maintenance3 · 0 OOS
392.16 Failure to use seat beltUnsafe Driving3 · 0 OOS

Explore full safety record — inspections, BASICs, crashes

Authority & Insurance

Can they legally + adequately haul your load?

FMCSA authority & insurance data as of Nov 3, 2026

Insurance continuity· insurer · policy · lapses

No insurance filing history on record.

This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here. Request a certificate of insurance to confirm active coverage before tendering.

Explore full authority & insurance record

Equipment

VIN-decoded · NHTSA vPIC

FMCSA equipment data as of Nov 7, 2026

Capacity· power units = haulable capacity; trailers are towed

Registered power units (MCS-150): 77
Observed power (24 mo): 50
Trailers (towed): 0

Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.

Fleet age· model years · decoded VINs

2.5 yr

Average age

2026

Newest model yr

2017

Oldest model yr

52.0%

VINs decoded

Explore full fleet — VIN roster, equipment mix, age distribution

Operations & Lanes

Revealed by inspection density across 8 states · 24 mo

FMCSA operations & lanes data as of Nov 7, 2026

Operating footprint· revealed by roadside-inspection geography

Operating radiusRegional

revealed

States observed

US states

Inspections · 24 mo

MD busiest

Inspections by state· roadside inspections, last 24 mo

Maryland: 59 inspections
Pennsylvania: 15 inspections
Delaware: 5 inspections
Virginia: 4 inspections
New Jersey: 3 inspections
District of Columbia: 2 inspections
West Virginia: 1 inspections

Home base

UPPER MARLBORO, MD

16155 TRADE ZONE AVENUE

Most inspections: MD

59 inspections

MD 59 · PA 15 · DE 5

See the full operating map — state density, top lanes

Network & Fraud

Affiliated entities & reincarnation signals · for review, not a verdict

FMCSA network & fraud data as of Nov 7, 2026

No shared-VIN flow in the last 12 months

None of this carrier's trucks were inspected under another USDOT in the last 12 months — any shared equipment is historical, not active.

Show all-time history (8 trucks · 8 carriers)

Across all inspections on record: USDOT 3532893 USDOT 4107425 USDOT 3883187 USDOT 4345610 USDOT 1459681 USDOT 925129 USDOT 3109624 USDOT 2109578

Capacity consistency· registered vs roadside-observed power units

Registered (MCS-150)

Observed (24 mo)

Shared w/ other carriers

Registered capacity materially exceeds what is observed roadside — the MCS-150 may be stale or the fleet under-utilized.

Explore the carrier network & VIN cross-links

Identity & Federal

FMCSA census + L&I dossier

FMCSA identity & federal data as of Nov 7, 2026

Location

Physical address: 16155 TRADE ZONE AVENUE, UPPER MARLBORO, MD, 20774
Operation: Interstate· Hazmat

Contact

Phone: (301) 390-9575
Fax: (301) 390-1108
Email: shirley

Registration

Officers: Michael Leisher · Doug Riley
USDOT / docket: 6789
First registered: Jun 1, 1974
Last MCS-150: Jul 16, 2024 · 1,442,748 mi (2023)
FMCSA safety rating: Satisfactory · Feb 25, 2008
D-U-N-S: 3242781

Fleet (self-reported · MCS-150)

Power units

Drivers

CDL drivers

1,442,748

Annual mileage

Open the full identity & federal record

Federal activity

Daily-captured FMCSA licensing & insurance changes — monitored by Vektor

FMCSA federal activity data as of Nov 7, 2026

Federal record activity· monitored daily by Vektor

No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.

Open the full federal-record activity feed

Reviews

Verified broker, shipper & driver reviews — moderated

Performance ratings only — never the Vektor risk score

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11%

vehicle out-of-service rate

Safety and violations

8 of 74 eligible vehicle inspections had a vehicle OOS finding.

FMCSA roadside inspections, Nov 2024 to Nov 2026.

59violation records

13OOS-tagged records

8 of 74inspections with OOS

What the violations were

FMCSA BASIC themes in plain language: vehicle maintenance, driver fitness, hours of service and unsafe driving. Roadside records grouped without double counting.

Unsafe driving

230%0 / 23

Other vehicle maintenance

2143%9 / 21

Brakes

60%0 / 6

Driver fitness

580%4 / 5

Lights

40%0 / 4

Bar = record count; % = OOS share.

Vehicle OOS over time

Eligible vehicle inspections in six-month windows; no national comparison.

30%

15%

30%

9%Nov 24 to May 252 / 22

10%May 25 to Nov 252 / 20

6%Nov 25 to May 261 / 17

20%May 26 to Nov 263 / 15

Top 3 codes (14 of 59 records)

392.2-SLLTCD State/local traffic law violation (speeding, etc.)6
392.2-SLLTL State/local traffic law violation (speeding, etc.)4
393.47E Brake actuators / linings / components4

View all

393.75A3-TAOL Tires (defective / underinflated / worn)4
393.78A-WS Windshield wipers3
396.3A1-BOS Inspection / repair / maintenance not performed3
390.21TB1-MC USDOT number marking on vehicle2
390.21TB2-DOT USDOT number marking on vehicle2
390.19B2-BIENNIAL Unified registration / MCS-1501
391.11B4-CLHA Driver not qualified1
391.11B5-LNCDLNVE Driver not qualified1
391.41A-MCPC No / expired medical certificate1
391.41APC No / expired medical certificate1
391.41B10-MC No / expired medical certificate1
392.2-SLLDL State/local traffic law violation (speeding, etc.)1
392.2-SLLEQP State/local traffic law violation (speeding, etc.)1
392.2-SLLIRP State/local traffic law violation (speeding, etc.)1
392.2-SLLLR State/local traffic law violation (speeding, etc.)1
392.2-SLLS3 State/local traffic law violation (speeding, etc.)1
392.2-SLLTR State/local traffic law violation (speeding, etc.)1
392.2-SLLUCR State/local traffic law violation (speeding, etc.)1
392.82DUMT Using a hand-held mobile phone1
393.201C-FR Parts & accessories (vehicle condition)1
393.203B-CBP Parts & accessories (vehicle condition)1
393.53B Automatic brake adjusters / indicators1
393.53BMAN Automatic brake adjusters / indicators1
393.60C Windshield / glazing1
393.67C7V-F Parts & accessories (vehicle condition)1
393.93A-SBA Parts & accessories (vehicle condition)1
393.95A1 Emergency equipment (extinguisher, triangles)1
393.95F Emergency equipment (extinguisher, triangles)1
393.9A-LCL Inoperative required lamps1
393.9A-LHLI Inoperative required lamps1
393.9A-LLPL Inoperative required lamps1
393.9A-LSML Inoperative required lamps1
396.17C-PI Periodic (annual) inspection1
396.3A1-F Inspection / repair / maintenance not performed1
396.3A1BOS Inspection / repair / maintenance not performed1
396.5B-L Oil and/or grease leak1

Before you tender

Ask for current records for the assigned equipment and driver.

Unsafe driving

Check dated inspection records and current authority before tendering.

Other vehicle maintenance

Check dated inspection records and current authority before tendering.

Brakes

Request current brake repair and follow-up inspection records for the assigned equipment.

Safety and violations

Violation data is not available for this carrier right now.

Verification summaryAuthority, insurance, safety and identity facts for THOS SOMERVILLE CO.

THOS SOMERVILLE CO (USDOT 6789) has a Vektor safety score of 84/100 and a Review before loading verdict, from the carrier's FMCSA record. FMCSA profile data as of Nov 3, 2026.

The carrier has an unknown current for-hire authority status because no FMCSA L&I authority row is available. FMCSA authority data as of Nov 7, 2026.

It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available. FMCSA insurance data as of Nov 3, 2026.

Its vehicle out-of-service rate was 10.8% over the last 24 months, versus the 22.26% CVSA national average, from FMCSA roadside-inspection data. FMCSA safety data as of Nov 7, 2026.

The carrier received 92 roadside inspections in the last 24 months — 74 vehicle-level and 92 driver-level — across 8 states, according to FMCSA roadside-inspection data. FMCSA operations data as of Nov 7, 2026.

The carrier has 1 reportable crash in the last 24 months and 1 fatal crash across the full FMCSA crash record available. FMCSA safety data as of Nov 7, 2026.

It reports 77 power units and 77 drivers in its most recent MCS-150 filing dated Jul 16, 2024. FMCSA identity data as of Nov 7, 2026.

It has an FMCSA safety rating of Satisfactory assigned Feb 25, 2008 in the federal record. FMCSA identity data as of Nov 7, 2026.

Frequently asked

What is THOS SOMERVILLE CO's USDOT number?

THOS SOMERVILLE CO's USDOT number is 6789.

Is THOS SOMERVILLE CO authorized to operate?

FMCSA authority data as of Nov 7, 2026. THOS SOMERVILLE CO is active in the FMCSA register.

What is THOS SOMERVILLE CO's safety record?

THOS SOMERVILLE CO has a 10.8% vehicle out-of-service rate (national average 22.26%) across 138 roadside inspections, with 1 reportable crash in the last 24 months, and an FMCSA "Satisfactory" safety rating. Vektor's computed risk score is 84/100 (tier: review).

How big is THOS SOMERVILLE CO's fleet?

THOS SOMERVILLE CO operates 77 power units and 77 drivers per its most recent MCS-150 filing.

Where is THOS SOMERVILLE CO based?

THOS SOMERVILLE CO is based in UPPER MARLBORO, MD, with roadside inspections recorded across 8 states.

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