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Carrier profile · USDOT 6789 · Data as of Oct 7, 2026

Thos Somerville Co

Upper Marlboro, MD · Interstate carrier · Since 1974
No MC authoritySatisfactory ratingHazmat
Cargo carriedBuilding MaterialsConstructionPlumbing,heating,air-Conditioning Supplies
View on FMCSA SAFERCall (301) 390-9575
77
Power units
77
Drivers
93
Inspections · 24 mo
1
Crashes · 24 mo
1.4M
Annual miles
52 yr
Registered
95
/ 100
Clear to load

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MCS-150 not updated in over 2 years: FMCSA requires a biennial update.

How we scored it · 5 factors
Operating authority20/20
Insurance20/20
Out-of-service rates20/20
Crashes & rating20/20
Continuity & identity15/20

Composite of public FMCSA authority, insurance, inspection and crash records weighted against the national fleet. Decision support, not an official FMCSA safety rating.

Safety

FMCSA inspections & crashes · 24 mo · AS OF OCT 7, 2026
Vehicle out-of-service
6.8%▼ below avg
National 22.26% · 5 of 74 inspections
Driver out-of-service
3.2%▼ below avg
National 6.67% · 3 of 93 inspections
Crashes
1
0 fatal1 injury1 tow-away
Crash rate 0.35 per 1M mi
Total inspections
93
Driver inspections
93
Vehicle inspections
74
People injured
2
Fatalities
0
FMCSA rating
Satisfactory (2008)

Enforcement

FMCSA closed cases

Closed enforcement cases — case numbers, violation codes and the amount settled — are available after you create a free account.

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Authority & insurance

FMCSA L&I · AS OF OCT 7, 2026

No operating authority (MC/FF docket) on file. Private and intrastate carriers don't need one; interstate for-hire carriers and brokers do.

Equipment

SELF-REPORTED ON MCS-150
77
Power units
77
Trucks
—
Tractors owned
—
Trailers owned
77
Drivers
42
CDL drivers
Registered to haul hazardous materials.

Operations & cargo

FMCSA CENSUS
InterstatePrivate Property
Cargo carried
Building MaterialsConstructionPlumbing,heating,air-Conditioning Supplies
Annual mileage
1,442,748 mi (2023)

Identity & federal record

FMCSA census · MCS-150
USDOT
6789
MC / docket
None
Legal name
Thos Somerville Co
DBA
—
Entity type
Carrier
Operation
Interstate
First registered
Jun 1, 1974
Last MCS-150
Jul 16, 2024
Safety rating
Satisfactory
Drivers (CDL)
77 (42)
Hazmat
Yes
Business type
Corporation

Fraud & network signals

For review, not a verdict.

No prior revocation
FMCSA shows no link to a previously revoked authority.
Unique phone number
Not shared with any other active USDOT.
Unique email address
Not shared with any other active USDOT.
Unique street address
Not shared with any other active USDOT.

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?

It does not hold MC operating authority, which private and intrastate carriers do not need.

What is Thos Somerville Co's safety record?

Over the last 24 months: 93 roadside inspections, a 6.8% vehicle and 3.2% driver out-of-service rate, and 1 reportable crash (0 fatal). FMCSA safety rating: Satisfactory.

How big is Thos Somerville Co's fleet?

77 power units and 77 drivers per its MCS-150 filed Jul 16, 2024.

Where is Thos Somerville Co located?

Thos Somerville Co is located at 16155 Trade Zone Avenue, Upper Marlboro, MD, 20774. Phone: (301) 390-9575.

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Source: FMCSA public records via the U.S. DOT Open Data Portal. Carrier Search presents the federal record and computed signals for decision support only. It is not an FMCSA safety rating and not a recommendation to use or avoid any carrier. Verify authority and insurance before tendering.