SHAMROCK VACUUM SERVICE INC
Nothing in the FMCSA record matched our risk signals. That is not a guarantee; follow the checks below. Authority and insurance are last known from May 14, 2026. How this works
No cargo cover filed with FMCSA
Green means the FMCSA record shows it. It does not confirm who you are talking to, or that a policy covers your specific load.
Not a live check. FMCSA has not published a Motus record for this carrier, so authority and insurance show the last known status from May 14, 2026. Confirm on Motus ↗ before booking.
What to verify next
- Confirm authority and insurance on the official Motus record ↗: our copy is the last known status from May 14, 2026. Safety record: SAFER ↗.
- Call back on the number on file, (936) 334-8100, not a number from an email or load board.
- Check that the MC number you were given is MC579917.
- Ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Insurance on file
Liability (BI&PD) pays for injury and damage to other people and property; it does not cover the freight. Cargo insurance covers the freight. FMCSA only requires cargo filings from household goods carriers and freight forwarders, so most carriers file none: ask for a cargo certificate that fits your load. No cargo cover filed with FMCSA.
| Type | Docket | Layer | Insurer | Coverage | Effective | Status |
|---|---|---|---|---|---|---|
| Liability (BI&PD) | MC579917 | Primary | GREAT DIVIDE INSURANCE COMPANY Policy BAP2025331-18 · 91X | $1,000,000 | Feb 6, 2026 | Active |
| Liability (BI&PD) | MC579917 | Excess over $1,000,000 | OBSIDIAN SPECIALTY INSURANCE COMPANY Policy AWDXS-00000055-00 · 91X | $2,000,000 | Feb 6, 2025 | Active |
Source: Last known · FMCSA snapshot May 14, 2026. Identical filings repeated in the FMCSA data are shown once; a filing listed under two dockets is one policy, not extra coverage. Coverage is the maximum amount filed with FMCSA, not the full policy.
Last known filings. Insurance for this carrier comes from the FMCSA snapshot of May 14, 2026. Policies may have been cancelled or replaced since. Confirm current filings: Motus record ↗ and ask the insurer for a certificate naming you as holder.
Roadside inspections Oct 18, 2024 – Oct 18, 2026
1 of 13 · Texas avg 25.1%
0 of 14 · Texas avg 7.7%
10 most recent inspections
| Date | State | Level | Violations | Out of service |
|---|---|---|---|---|
| Jun 10, 2026 | TX | 2 | 0 | No |
| Jun 4, 2026 | TX | 2 | 2 | No |
| May 5, 2026 | TX | 2 | 0 | No |
| May 5, 2026 | TX | 2 | 0 | No |
| Apr 14, 2026 | TX | 1 | 1 | No |
| Feb 19, 2026 | LA | 3 | 0 | No |
| Feb 9, 2026 | TX | 2 | 1 | No |
| Dec 25, 2025 | TX | 2 | 1 | No |
| Nov 13, 2025 | TX | 2 | 7 | No |
| Oct 17, 2025 | TX | 2 | 2 | No |
How these rates are calculated
Period: Oct 18, 2024 – Oct 18, 2026. Vehicle rate = vehicle inspections with a vehicle out-of-service order ÷ vehicle inspections (levels 1, 2, 5 and 6). Driver rate uses levels 1, 2, 3 and 6. The Texas average covers 347,521 vehicle and 460,200 driver inspections of all Texas-based carriers in this period. It mixes every type of operation, so compare with care; rates based on a handful of inspections say little. FMCSA's own SMS measures are weighted differently: SMS profile ↗ · SAFER snapshot ↗
Violations in FMCSA's SMS last 24 months
13 violations counted in FMCSA's Safety Measurement System (SMS), 1 of them serious enough to put the driver or vehicle out of service.
Why is this different from the 18 violations above?
The inspections section's number counts every violation written on the inspection reports in our Oct 18, 2024 – Oct 18, 2026 window. The SMS count comes from FMCSA's own monthly SMS snapshot, which uses its own 24-month window and only the violations it scores. Both are FMCSA figures; they measure different things.
| Category (FMCSA BASIC) | Violations | Out of service | Share | Texas share |
|---|---|---|---|---|
| Vehicle Maintenance | 13 | 1 | 100.0% | 78.8% |
10 most frequent violations
| Violation | Times | Out of service |
|---|---|---|
| Operating a CMV without proof of a periodic inspection Inspection Reports · Vehicle Maintenance · code 39617C | 3 | 0 |
| Truck Tractor manufactured on or after March 1 1997 not equipped with an antilock brake system Brakes All Others · Vehicle Maintenance · code 39355C1 | 2 | 0 |
| Flat tire or fabric exposed Tires · Vehicle Maintenance · code 39375A | 1 | 1 |
| Inadequate brakes for safe stopping - Brake Lining condition Brakes All Others · Vehicle Maintenance · code 39347A | 1 | 0 |
| CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear Brakes All Others · Vehicle Maintenance · code 39353B | 1 | 0 |
| Brakes (general) Explain: Brakes All Others · Vehicle Maintenance · code 3963A1B | 1 | 0 |
| Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt Brakes Out of Adjustment · Vehicle Maintenance · code 39347E | 1 | 0 |
| Failing to inspect/use emergency equipment Emergency Equipment · Vehicle Maintenance · code 3928 | 1 | 0 |
| No or defective lighting devices or reflective material as required Reflective Sheeting · Vehicle Maintenance · code 39311 | 1 | 0 |
| Truck-Tractor upper body corner requirements for retroreflective sheeting or reflex reflective material for vehicles manufactured after July 1997 Reflective Sheeting · Vehicle Maintenance · code 39311TU | 1 | 0 |
Source: FMCSA SMS violation file, inspections in the last 24 months, published Oct 18, 2026. "Share" is this company's mix of violations; the Texas column is the mix across all Texas-based carriers, so you can see which kinds of problems stand out. A high count partly reflects fleet size and how often trucks are inspected.
Crashes Oct 18, 2024 – Oct 18, 2026
5 most recent crashes
| Date | Location | Fatalities | Injuries |
|---|---|---|---|
| Sep 28, 2026 | Baytown, TX | 0 | 1 |
| Jul 22, 2026 | Beaumont, TX | 0 | 1 |
| Oct 13, 2025 | Not Listed, TX | 0 | 0 |
| Jul 1, 2025 | Baytown, TX | 0 | 1 |
| Jun 28, 2025 | Mont Belvieu, TX | 0 | 1 |
Reportable crashes do not imply the carrier was at fault.
Company details FMCSA census · Oct 18, 2026
| USDOT number | 1285243 |
|---|---|
| MC / docket | MC579917 |
| Legal name | SHAMROCK VACUUM SERVICE INC |
| Operation | Interstate |
| Business type | — |
| Power units | 40 |
| Drivers | 23 |
| Annual mileage | 1,340,000 (2025) |
| Hazmat | Yes |
| Safety rating | Satisfactory (Aug 12, 2009) |
| USDOT number added | Sep 14, 2004 · 22 years ago |
| Last MCS-150 update | Feb 4, 2026 |
Cargo carried
Liquids/GasesOilfield EquipmentChemicalsOtherOILFIELD FLUIDS
Questions about SHAMROCK VACUUM SERVICE INC
What does SHAMROCK VACUUM SERVICE INC's operating authority allow?
MC579917: Contract carrier (may haul regulated property for hire under continuing contracts with specific shippers).
Which information about SHAMROCK VACUUM SERVICE INC is old or missing?
Operating authority is the last known status from the FMCSA snapshot of May 14, 2026, not a current check. Insurance filings are from the same May 14, 2026 snapshot.
What should I verify before booking SHAMROCK VACUUM SERVICE INC?
Confirm the authority and insurance on the Motus record for USDOT 1285243. Call the company back on the phone number on file, (936) 334-8100, not a number from an email or load board message. Check that the MC number the dispatcher gave you matches MC579917, and ask the insurer for a certificate of insurance naming you as certificate holder.
Other companies using (936) 334-8100
A shared number is common for related companies, dispatch services and family businesses. It is not proof of fraud, but it is worth knowing which company you are dealing with.
1 company
| Company | USDOT | Docket | Trucks | Authority |
|---|---|---|---|---|
| FORWARD OILFIELD SERVICES LLC | 2133884 | MC743128 | 1 | Last known: Active FMCSA snapshot May 14, 2026 |
Other trucking companies in Liberty
All in Liberty →Largest fleets
| Company | USDOT | Docket | Trucks | Authority |
|---|---|---|---|---|
| CURTIS & SON VACUUM SERVICE INC DBA CURTIS & SON COMPANIES |
619741 | MC296490 | 97 | Active Current · Motus |
| SMART OILFIELD SERVICES LLC | 923251 | MC399555 | 61 | Active Current · Motus |
| CURTIS & SON HEAVY HAUL LLC DBA CURTIS & SON COMPANIES |
3665804 | MC1269185 | 58 | Active Current · Motus |
| RED EYE LLC | 3943973 | MC1470934 | 11 | Last known: Active FMCSA snapshot May 14, 2026 |
| BLACKGOLD SERVICES INC | 1879682 | MC771112 | 7 | Last known: Active FMCSA snapshot May 14, 2026 |
| EAGLEHIGH LLC | 3520117 | MC1197732 | 4 | Last known: Active FMCSA snapshot May 14, 2026 |
| RCJ RENTALS LLC DBA M & M RENT ALL |
1960552 | MC959159 | 3 | Active Current · Motus |
| HORSEGATE TRANSPORTATION LLC | 3454953 | MC1125908 | 3 | Last known: Inactive FMCSA snapshot May 14, 2026 |
| JOHN DANIEL MARANGAKIS DBA JDM EXCAVATION |
1474570 | MC877611 | 2 | Last known: Inactive FMCSA snapshot May 14, 2026 |
| STB LOGISTICS SERVICE LLC | 1548113 | MC575272 | 2 | Last known: Active FMCSA snapshot May 14, 2026 |
Company details from the FMCSA Company Census File (Oct 18, 2026). Inspections and crashes from FMCSA MCMIS files. About our data · Report an error.