Home›Maryland›Upper Marlboro›Thos Somerville Co

Thos Somerville Co (DOT# 6789) – FMCSA Carrier Profile

DOT# 6789● Active
Updated: 2026-03-09

Thos Somerville Co is a registered motor carrier with the FMCSA under USDOT number 6789. The company operates from Upper Marlboro, MD and maintains an active operating status with 77 power units and 77 drivers on record.

Safety Rating

FMCSA Safety Rating
✓ Satisfactory
Rated: February 25, 2008

Thos Somerville Co holds a "Satisfactory" safety rating from the Federal Motor Carrier Safety Administration (FMCSA). This rating indicates that the carrier has been found to comply with federal safety regulations based on the most recent compliance review conducted by FMCSA. View official FMCSA record →

Advertisement

Company Information

Address16155 Trade Zone Avenue, Upper Marlboro, MD, 20774
Phone(301) 390-9575
Emailshirley
Entity TypePrivate Property
OperationInterstate
Power Units77
Drivers77
MCS-150 FiledJuly 16, 2024
Annual Mileage1,442,748 mi (2023)
All carriers in Maryland→Carriers in Upper Marlboro, MD→

Inspection Summary

All-time Inspections
All-time
88
Total
11
OOS
5
Driver OOS
6
Vehicle OOS
OOS Rate12.50%
The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service.

Crash History

Crash Records
All-time
1
Total
0
Fatal
2
Injuries
0
Tow-Away

BASICS Safety Scores

BASICS Scores
Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories
1.9
Unsafe Driving
0.0
HOS Compliance
0.4
Driver Fitness
0.0
Controlled Substances
1.3
Vehicle Maintenance
Advertisement

Related Carriers

Cowan Systems Llc
DOT# 548880 · Baltimore, MD
Satisfactory
Woodlawn Motor Coach Inc
DOT# 270798 · Baltimore, MD
Satisfactory
Williams Scotsman Inc
DOT# 350040 · Baltimore, MD
Satisfactory
Thompsongas Llc
DOT# 2812287 · Frederick, MD
Not Rated
Baltimore Tank Lines Llc
DOT# 84666 · Glen Burnie, MD
Satisfactory
Largest Trucking Companies →Safest Trucking Companies →

Frequently Asked Questions

What is USDOT Number 6789?
USDOT number 6789 is assigned to Thos Somerville Co, an active motor carrier registered with the FMCSA, based in Upper Marlboro, MD.
What is the safety rating of Thos Somerville Co?
Thos Somerville Co has a safety rating of Satisfactory as of February 25, 2008.
How many inspections has Thos Somerville Co had?
Thos Somerville Co has recorded 88 total inspections with 11 out-of-service orders, representing an OOS rate of 12.50%.
Where is Thos Somerville Co located?
Thos Somerville Co is headquartered at 16155 Trade Zone Avenue, Upper Marlboro, MD 20774.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 6789 · Last updated: 2026-03-09. View official FMCSA record →