TruckCodex

THOS SOMERVILLE CO

USDOT 6789 Active CORPORATION PRIVATE PROPERTY Hazmat Satisfactory rated CORPORATION Company officer: MICHAEL LEISHER Company officer 2: DOUG RILEY Building Materials Other (PLUMBING AND HVAC) Based in UPPER MARLBORO, MD Grade A · 85
Brokers & shippers · booking check

Book with caution — review signals below

No hard OOS / revoked / uninsured blocker, but elevated risk signals need a human look before booking.

Caution
Review these
  • OOS rate worse than size peers Driver and/or vehicle out-of-service rate is above the peer median.
  • 2 fatalities on crash record 30 FMCSA-reportable crashes on file. Details →
On file
  • Satisfactory FMCSA safety rating
  • OOS rate better than size peers
Org: CORPORATION
Company officer: MICHAEL LEISHER
Company officer 2: DOUG RILEY
Cargo: Building Materials, Other (PLUMBING AND HVAC)
Built for brokers and shippers deciding whether to tender. Always confirm on FMCSA SAFER and L&I before booking — TruckCodex mirrors public filings and can lag by up to a day.
Plain-text risk summary (print / paste) 
TruckCodex risk summary — THOS SOMERVILLE CO (USDOT 6789)
Verdict: CAUTION
Book with caution — review signals below
No hard OOS / revoked / uninsured blocker, but elevated risk signals need a human look before booking.

Authority / census status: Active
Officer(s): MICHAEL LEISHER (Company officer); DOUG RILEY (Company officer 2)
Organization: CORPORATION

Blockers:
  (none)

Cautions:
  • OOS rate worse than size peers — Driver and/or vehicle out-of-service rate is above the peer median.
  • 2 fatalities on crash record — 30 FMCSA-reportable crashes on file.

On file:
  • Satisfactory FMCSA safety rating
  • OOS rate better than size peers

Source: https://truckcodex.com/usdot/6789/
As of: Jul 25, 2026
Always confirm on FMCSA SAFER and L&I before tendering — TruckCodex mirrors public filings and can lag by up to a day.
TruckCodex · compliance grade

Compliance grade A

Composite of 4/5 scored components (mean 85/100). Expand for per-signal evidence. Heuristic — not an FMCSA rating or legal advice.

A confidence 80% · 4/5 signals
Authority / census
Active · 100/100

Active census status with no OOS order or revoked authority on file.

Insurance / BIPD
NR

Insurance/BIPD signal not resolved for this carrier.

NR reason: No active policies and no uninsured flag to score against.

OOS vs peers
Mixed vs peers · 40/100

Driver OOS 3.4% vs peer median 1% (worse). Vehicle OOS 8.5% vs peer median 17.65% (better). n=13263 same-size ACTIVE peers.

FMCSA safety rating
Satisfactory · 100/100

Official FMCSA Satisfactory safety rating.

Insurance-watch tier
Not on watch · 100/100

No BMC-91 insurance-lapse watch classification on file for this USDOT.

TruckCodex compliance grade from authority, BIPD, peer OOS, FMCSA safety rating, and insurance-watch signals. Not legal advice. See methodology. Booking triage on this page: Caution.

Operating authority

No authority breakdown on file.

Insurance

No active policies on file.

BOC-3 agent

No BOC-3 filing on file.

Company profile

Company details
USDOT 6789
In FMCSA records since Jun 1, 1974 (~52y)
Entity CORPORATION
Business org CORPORATION
Company officer MICHAEL LEISHER
Company officer 2 DOUG RILEY
Operation PRIVATE PROPERTY
Hazmat Yes (MCS-150)
Cargo carried
Building Materials, Other (PLUMBING AND HVAC)
Fleet size 77 units
Drivers 77
Annual mileage 1,442,748 mi
Contact & address
Phone: (301) 390-9575
Email: shirley
Physical
16155 TRADE ZONE AVENUE
UPPER MARLBORO, MD 20774
Mailing address matches physical.
Registration & safety rating
USDOT 6789
In FMCSA records since Jun 1, 1974 (~52y)
Entity CORPORATION
Operation PRIVATE PROPERTY
Annual mileage (MCS-150) 1,442,748 mi
Safety Rating Satisfactory
Hazmat Yes (MCS-150)
vs. National Average
Vehicle OOS Rate 8.5% vs 23.4% -14.9 pts
Driver OOS Rate 3.4% vs 6.7% -3.3 pts
Violations per Inspection 0.57 vs 1.80 -1.23
Peer tier (mid-sized fleets (11-100 power units)) median OOS rate: 27.3%
FMCSA cargo filing (BMC-34/83)

No active FMCSA cargo filing on file.

FMCSA L&I filing evidence — not a shipper certificate of insurance (COI). Cargo (BMC-34) is primarily an HHG / household-goods requirement; general freight carriers often have none.

Fleet details (MCS-150)

Vehicle type Owned Term leased Trip leased
Trucks 77 0 0

Self-reported on the carrier’s Form MCS-150 (FMCSA Company Census).

Accident reports (24 months)

All 30 crashes →
Last 6 months 6–12 months 12–24 months Total
Fatalities 0 0 0 0
Injuries 0 2 0 2
Tow-away 0 1 0 1
Crash reports 0 1 0 1

Reportable crashes from FMCSA MCMIS for the trailing 24 months. Counts may differ slightly from SAFER due to reporting lag.

Inspections (24 months)

All 134 inspections →
Driver Vehicle Hazmat
Inspections 88 88 0
OOS inspections 2 5 0
OOS percentage 2.27% 5.68% —
National average 6.67% 22.26% 4.44%

Roadside inspections in the last 24 months. National averages are FMCSA MCSAP reference rates (driver ~6.7%, vehicle ~23.4%, hazmat ~4.4%).

Power Units
77
Drivers
77
Inspections
134
FMCSA roadside history on file
OOS Rate (peak)
8.5%
driver or vehicle, whichever higher
Crashes (24m)
1
30 all-time
Authorities
0
Carrier analysis & narrative context SEO summary, status notes, AI overview, and safety profiles

THOS SOMERVILLE CO is a corporation based in UPPER MARLBORO, MD, registered with the FMCSA under USDOT 6789. The carrier is currently active in FMCSA's records, with a safety rating of Satisfactory. MCS-150 self-reporting puts the fleet at 77 power units and 77 drivers, with 134 roadside inspections on file and a peak out-of-service rate of 8.5%. Use this page to verify the carrier's authority and insurance, review its inspection and crash history, and cross-reference live data on FMCSA SAFER before booking a load or onboarding a partner.

Carrier overview

THOS SOMERVILLE CO is a mid-sized fleet, operating 77 power units and 77 drivers, organized as a corporation, based in Upper Marlboro, MD. Across 88 roadside inspections in the last 24 months, the fleet recorded a 9.1% out-of-service rate, with 1 reportable crash. no operating authority record was located.

Inspection profile

88 roadside inspections over the last 24 months, up 120% versus the prior 24 months, concentrated in MD (59) and PA (13), with Level 2 inspections the most common.

Violation profile

9.1% out-of-service rate; led by Vehicle Maintenance (50.0% of violations); top code 392.2-SLLTCD (Operating a CMV while ill or fatigued) cited 6 times.

Fleet profile

The fleet comprises 77 power units (mid-sized fleet) and 77 drivers; Mack, Kenworth, and Freightliner are the most-inspected makes.

Out-of-Service rate vs same-size peers FMCSA roadside inspections, % placed out-of-service

Compared against 13,263 ACTIVE carriers operating 38–116 power units (±50% of this carrier's 77 unit fleet).

This carrier — Driver OOS
3.4%
Drivers placed out-of-service at roadside inspections
Peer median
1%
Median across 13,263 same-size peers
Verdict
Riskier than peers
Delta +2.4 pts vs peer median (lower is safer)
This carrier — Vehicle OOS
8.5%
Vehicles placed out-of-service at roadside inspections
Peer median
17.65%
Median across 13,263 same-size peers
Verdict
Safer than peers
Delta -9.15 pts vs peer median (lower is safer)
Inspection Analytics Monthly activity · BASIC mix · state map

Monthly Inspection Activity (24 months)

2024-08 2026-06

Violations by BASIC Category

Federal BASIC buckets for every citation issued against this carrier over the past 24 months.
Vehicle Maintenance
25 violations
4 OOS · 16.0%
Unsafe Driving
15 violations
Driver Fitness
5 violations
3 OOS · 60.0%
General/Admin
5 violations

Activity by State

States this carrier has been inspected in over the past 24 months.
State Inspections OOS OOS % Last Inspection
Maryland (MD) 57 4 7.0% Jun 2, 2026
Pennsylvania (PA) 15 1 6.7% Jun 24, 2026
Delaware (DE) 4 0 0.0% Nov 14, 2025
Virginia (VA) 4 0 0.0% Nov 12, 2025
New Jersey (NJ) 3 0 0.0% Jan 9, 2026
District of Columbia (DC) 2 1 50.0% Aug 6, 2025
US (US) 2 1 50.0% Dec 22, 2025
West Virginia (WV) 1 0 0.0% Feb 26, 2026
Vehicle Fleet Top makes and models observed in roadside inspections
Make Model Inspections
Kenworth 37
Mack 32
Freightliner 29
Peterbilt 5
Dodge 3
GMC 3
Isuzu 2
Knnw 2
SMS BASIC Scores FMCSA Safety Measurement System per-BASIC scores
BASIC Inspections Serious Measure Percentile Alert As Of
Driver Fitness 5 — 0.28 0 — Jul 20, 2026
Controlled Substances / Alcohol 0 — 0.00 0 — Jul 20, 2026
Hours of Service 0 — 0.00 0 — Jul 20, 2026
Unsafe Driving 9 — 1.42 1 — Jul 20, 2026
Vehicle Maintenance 16 — 1.23 1 — Jul 20, 2026

Higher percentiles indicate worse performance relative to peer carriers. Carriers at or above the FMCSA intervention threshold are marked ALERT.

Recent Inspections (134 rows) View all 134 →
Inspection # Date ▼ State Level Station Vehicle Violations Top Codes OOS
88230339 Jun 24, 2026 PA 3 —
KENWORTH STRAIGHT TRUCK
PA ZGB0605 · 2NKHHM6XXJM182333
0 — No
88043035 Jun 2, 2026 MD 2 —
MACK STRAIGHT TRUCK
MD 6GM879 · 1M2MDBAA8SS017740
0 — No
87990291 May 27, 2026 MD 2 —
MACK STRAIGHT TRUCK
MD 5HA7564 · 1M2MDBAA2TS019680
0 — No
87717324 Apr 28, 2026 MD 2 EDGEWATER MD
MACK STRAIGHT TRUCK
MD 5HA7564 · 1M2MDBAA2TS019680
0 — No
87699838 Apr 28, 2026 PA 3 SOUTH WHITEHALL TOWNSHIP PA
KENWORTH STRAIGHT TRUCK
PA ZVZ7030 · 2NK3HM6X6PM236780
1 2-SLLTL No
87667206 Apr 23, 2026 MD 1 PERRYVILLE MD
KENWORTH STRAIGHT TRUCK
DE C60718 · 2NK3HM6X7PM236772
0 — No
87612573 Apr 17, 2026 MD 2 PERRYVILLE MD
KENWORTH STRAIGHT TRUCK
DE C60718 · 2NK3HM6X7PM236772
2 75A3-TAOL, 9A-LSML Yes
87528548 Apr 6, 2026 MD 2 VIENNA MD
FREIGHTLINER STRAIGHT TRUCK
MD 5GG9444 · 1FVACWFC6SHVK8876
0 — No
87390650 Mar 23, 2026 MD 1 EDGEWATER MD
KENWORTH STRAIGHT TRUCK
MD 5FE1226 · 2NK3HM6XXPM236782
0 — No
87310496 Mar 11, 2026 MD 2 ANNAPOLIS MD
KENWORTH STRAIGHT TRUCK
MD 5FE1226 · 2NK3HM6XXPM236782
0 — No
87211698 Mar 4, 2026 MD 2 PERRYVILLE MD
FREIGHTLINER STRAIGHT TRUCK
MD 5GG9443 · 3ALACWFC4SDVT3029
0 — No
87200796 Feb 26, 2026 WV 2 MARTINSBURG WV
MACK STRAIGHT TRUCK
WV B323348 · 1M2MDBAA0SS017733
0 — No
87013714 Feb 6, 2026 MD 2 QUEEN ANNE MD
FREIGHTLINER STRAIGHT TRUCK
MD 5GG9444 · 1FVACWFC6SHVK8876
0 — No
86870482 Jan 21, 2026 MD 2 ANNAPOLIS MD
KENWORTH STRAIGHT TRUCK
MD 5FE1226 · 2NK3HM6XXPM236782
0 — No
87367543 Jan 9, 2026 NJ 2 NJ
MACK STRAIGHT TRUCK
MD 6GL9291 · 1M2MDBAA6SS017736
1 392.2-SLLUCR No
86756355 Jan 9, 2026 MD 2 PERRYVILLE MD
KENWORTH STRAIGHT TRUCK
DE C60718 · 2NK3HM6X7PM236772
0 — No
86755758 Jan 8, 2026 MD 2 ANNAPOLIS MD
KENWORTH STRAIGHT TRUCK
MD 5FE1226 · 2NK3HM6XXPM236782
2 392.82DUMT, 393.203B-CBP No
86779746 Jan 7, 2026 PA 3 —
MACK STRAIGHT TRUCK
PA ZRJ3363 · 1M2MDBAA5SS016965
0 — No
86735741 Dec 22, 2025 US 1 SUITLAND-SILVER HILL MD
RAM STRAIGHT TRUCK
Ticket: Dodge
MD 8FE2774 · 3C63RRAJ5NG303221
7 391.41APC, 393.95F, 392.2-SLLS3 Yes
86600337 Dec 17, 2025 PA 3 PHILADELPHIA PA
KENWORTH STRAIGHT TRUCK
MD 5FE1228 · 2NK3HM6X8PM236781
1 392.2-SLLTCD No
86527712 Dec 9, 2025 NJ 2 CARNEYS POINT SCALE
MACK STRAIGHT TRUCK
MD 6GL9291 · 1M2MDBAA6SS017736
0 — No
86404932 Nov 24, 2025 PA 2 PA
MACK STRAIGHT TRUCK
MD 6GK6665 · 1M2MDBAA5SS016898
1 393.93A-SBA No
86395132 Nov 21, 2025 MD 2 ANNAPOLIS MD
MACK STRAIGHT TRUCK
MD 1GM1538 · 1M2MDBAA3SS017743
0 — No
86319672 Nov 14, 2025 DE 3 TOWNSEND DE
FREIGHTLINER STRAIGHT TRUCK
MD 5GG9445 · 1FVACWD28SHVP4445
1 392.2-SLLTCD No
86360078 Nov 12, 2025 VA 3 DAHLGREN VA
MACK STRAIGHT TRUCK
MD 5GG9438 · 1M2MDBAA7SS016899
0 — No
Recent Crashes (30 rows) View all 30 →
Report # Date ▼ State Fatalities Injuries Tow Hazmat Severity
VA0252380167 Aug 26, 2025 VA 0 2 Yes No Injury
PA210290900X Nov 1, 2022 PA 0 2 Yes No Injury
MD22A1004586 Oct 17, 2022 MD 0 0 Yes No Tow
MD22A0944031 Aug 30, 2022 MD 0 0 Yes No Tow
MD22A0912232 May 18, 2022 MD 0 1 Yes No Injury
PA105090800X May 20, 2021 PA 0 0 Yes No Tow
MD21A0768017 Feb 11, 2021 MD 0 0 Yes No Tow
DE0219007155 Jan 23, 2019 DE 0 0 Yes No Tow
DE0417069355 Oct 12, 2017 DE 0 1 Yes No Injury
PA610771800X Oct 7, 2016 PA 2 2 Yes No Fatal
VA0161470218 Feb 8, 2016 VA 0 0 Yes No Tow
VA0143605150 Dec 26, 2014 VA 0 1 Yes No Injury
PA408374800X Aug 28, 2014 PA 0 0 Yes No Tow
MD14A0017936 Jan 29, 2014 MD 0 1 Yes No Injury
VA0131055235 Apr 15, 2013 VA 0 0 Yes No Tow
PA200921700X Jan 18, 2012 PA 0 1 No No Injury
MD1110637065 Nov 29, 2011 MD 0 1 Yes No Injury
MD1112218475 Jul 8, 2011 MD 0 0 Yes No Tow
VA0110675066 Mar 7, 2011 VA 0 3 Yes No Injury
DC2007070607 May 29, 2007 DC 0 2 No No Injury
MD0409502336 May 19, 2004 MD 0 1 Yes No Injury
WV000007810A Feb 24, 2003 WV 0 2 Yes No Injury
PA108188600A Nov 13, 2001 PA 0 0 Yes No Tow
MD0007751016 Aug 7, 2000 MD 0 1 No No Injury
VA0000065213 Jan 19, 2000 VA 0 0 Yes No Tow
Top Stations & Violation Codes Where this carrier gets inspected and what they get cited for

Top Violation Codes Cited

Code Description Category Cited OOS
393.9(a) Inoperable required lamps Vehicle Maintenance 17 4
392.2 Violation of Local Laws - Explain: Unsafe Driving 6 0
392.16(a) Failing to use seat belt (49 CFR) Unsafe Driving 3 0
391.41(a)(1) 391.41(a)(1) Driver Fitness 2 1
392.82(a)(1) Using a hand-held mobile telephone while operating a CMV Unsafe Driving 2 0
391.11(b)(4) Medical (Certificate) - Operating a CDL (passenger or property carrying) vehicle that is non-excepted and the driver has self-certified as excepted interstate or excepted intrastate with the state driver's licensing agency. Driver Fitness 1 1
391.41(a) Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency. History of either failing to produce a medical certificate or having an expired medical certificate. Driver Fitness 1 0
393.11 No or defective lighting devices or reflective material as required Vehicle Maintenance 1 0
393.110 Failing to meet minimum tiedown requirements Vehicle Maintenance 1 1
393.19 Inoperative/Defective Hazard Warning Lamp Vehicle Maintenance 1 0
Related Records Cross-references to every adjacent page
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How to verify THOS SOMERVILLE CO

  1. Verify USDOT and MC numbers match the carrier's documents. Compare the USDOT number and MC docket on this page to the numbers on the carrier's invoice, rate confirmation, or load-board listing. A mismatch between the carrier's claimed numbers and the registered legal name is the single most common red flag.
  2. Check active operating authority and insurance status. Confirm the Authority Records show at least one ACTIVE docket for the type of operation you're booking, and that the Active Insurance card lists a current BIPD/Primary policy. A revoked authority or uninsured carrier cannot legally operate.
  3. Review safety rating and SMS BASIC scores. Check the carrier's FMCSA safety rating (if any) and the SMS BASIC table. A high percentile in any BASIC category — especially Unsafe Driving, HOS, or Vehicle Maintenance — is worth investigating before tendering a load.
  4. Examine inspection and crash history. Open the Inspection History and Crash History subpages for the full record. Look for patterns: repeat OOS findings on the same unit, multiple crashes in a short window, or violations clustered in one BASIC category.
  5. Cross-reference real-time data with FMCSA SAFER. For the most current snapshot — within 24 hours of any insurer filing or authority change — click through to the FMCSA SAFER lookup. TruckCodex mirrors SAFER and L&I daily; SAFER itself reflects filings within 24 hours.

Frequently asked questions about THOS SOMERVILLE CO

Is THOS SOMERVILLE CO an active motor carrier? ▾
Yes. THOS SOMERVILLE CO is registered with the FMCSA under USDOT 6789 and is currently shown as Active in the agency's Motor Carrier Management Information System (MCMIS). Active status means the carrier may legally operate, contingent on continuous insurance and authority filings.
What is THOS SOMERVILLE CO's safety rating? ▾
THOS SOMERVILLE CO's FMCSA safety rating is Satisfactory. A Satisfactory rating means FMCSA evaluators determined the carrier had an adequate safety management program at the time of the most recent compliance review. Safety ratings are assigned only after a formal compliance review; most carriers in the FMCSA database are unrated.
How many inspections has THOS SOMERVILLE CO had? ▾
134 roadside inspections are on file for THOS SOMERVILLE CO in FMCSA's MCMIS database. Each inspection is summarized in the Inspection History section below — sortable by date, state, level, and out-of-service result. Newer inspections are pulled from the FMCSA SMS data feed daily.
What is THOS SOMERVILLE CO's out-of-service rate? ▾
THOS SOMERVILLE CO's peak out-of-service rate is 8.5% (whichever is higher of driver-OOS or vehicle-OOS, computed from FMCSA roadside inspection data). The national averages are roughly 6.7% for drivers and 23.4% for vehicles — see the peer-context card on this page for a side-by-side comparison.
Where is THOS SOMERVILLE CO based? ▾
THOS SOMERVILLE CO reports its physical address to the FMCSA as 16155 TRADE ZONE AVENUE, UPPER MARLBORO, Maryland 20774. Carriers must file a Form MCS-150 every two years to keep their address current; an outdated address is a common compliance flag.
Does THOS SOMERVILLE CO have valid operating authority? ▾
THOS SOMERVILLE CO does not have any FMCSA for-hire operating authority (MC, FF, or MX docket) on file. This is normal for private carriers — companies that haul their own goods need only a USDOT number, not an MC number. For-hire carriers (those hauling for compensation) must hold operating authority in addition to a USDOT number.
How many trucks and drivers does THOS SOMERVILLE CO operate? ▾
THOS SOMERVILLE CO self-reports 77 power units and 77 drivers on its most recent FMCSA Form MCS-150 filing. Power-unit and driver counts come from the carrier directly and are required to be updated every two years; very large fluctuations between filings can indicate fleet changes worth investigating.
Has THOS SOMERVILLE CO had any crashes? ▾
30 FMCSA-reportable crashes are on file for THOS SOMERVILLE CO in MCMIS. A reportable crash is one resulting in a fatality, an injury requiring medical attention, or a vehicle disabled and towed from the scene. The full crash log is on the Crashes subpage with date, state, and outcome details.

About FMCSA carrier records

Every commercial motor carrier operating in the United States is required to register with the Federal Motor Carrier Safety Administration (FMCSA) and obtain a USDOT number. The USDOT number is a permanent, unique identifier — once assigned, it stays with the carrier for life and is never reissued to another company. Carriers must update their registration every two years on Form MCS-150 to keep their address, fleet size, and operating data current.

Carrier safety data lives in FMCSA's Motor Carrier Management Information System (MCMIS): roadside inspections, crashes, out-of-service findings, and the seven Behavior Analysis and Safety Improvement Categories (BASICs) that make up the SMS scoring methodology. For-hire carriers must also hold operating authority — an MC, FF, or MX docket number — which is separate from the USDOT number and requires continuous insurance and BOC-3 process-agent filings to remain active.

TruckCodex mirrors FMCSA's public SAFER and L&I systems on a daily refresh cycle. Every record on this page reflects what FMCSA has on file. We do not edit or modify carrier data — for real-time confirmation immediately before a transaction, click through to the FMCSA SAFER lookup linked in the related records section above. Safety ratings, when present, come from formal compliance reviews; most active carriers have not been reviewed and are correctly listed as unrated.

Data sources & freshness

TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.

FMCSA

Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.

Refreshed daily.
NHTSA

Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).

Refreshed daily.
EIA

Retail diesel and gasoline price history and state fuel-tax tables.

Refreshed weekly.
Transport Canada

Cross-border carrier registry and Canadian recall campaigns where applicable.

Refreshed weekly.

TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.