Shamrock Vacuum Service Inc is an active interstate carrier based in Liberty, TX.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 9 | 0 | 0 |
| Tractors | 26 | 0 | 0 |
| Trailers | 31 | 0 | 0 |
| Total Power Units | 40 | ||
Distinct vehicles · 24 mo
vs 40 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 0% | 0% | Better than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 61% | 78% | Around peer average |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 0 | — | 6.67% |
| Vehicle | 0 | 1 | — | 22.26% |
| Hazmat | 1 | 0 | 0.00% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Oct 1, 2025 | 0 | 0 | 1 | 1 |
| Jul 1, 2025 | 0 | 1 | 0 | 1 |
| Apr 1, 2025 | 0 | 1 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 11 | 1 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Feb 19, 2026 | LA | TRUCK TRACTOR | 0 | 0 |
| Feb 9, 2026 | TX | TRUCK TRACTOR | 1 | 0 |
| Dec 25, 2025 | TX | TRUCK TRACTOR | 1 | 0 |
| Nov 13, 2025 | TX | TRUCK TRACTOR | 2 | 0 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 7 | 5.40 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 2 states. Top state TX accounts for 92% of activity. Activity outside home state (TX): 8%.
| 1 |
| Oct 17, 2025 |
| TX |
| TRUCK TRACTOR |
| 2 |
| 0 |
| May 30, 2025 | TX | TRUCK TRACTOR | 3 | 1 |
| Feb 18, 2025 | TX | TRUCK TRACTOR | 0 | 0 |
| Nov 11, 2024 | TX | TRUCK TRACTOR | 0 | 0 |
| Oct 22, 2024 | TX | TRUCK TRACTOR | 1 | 0 |
| Sep 18, 2024 | TX | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 9, 2026 | 39617C | Operating a CMV without proof of a periodic inspection | Vehicle Maintenance | — |
| Dec 25, 2025 | 39617C | Operating a CMV without proof of a periodic inspection | Vehicle Maintenance | — |
| Nov 13, 2025 | 3928 | Failing to inspect/use emergency equipment | Vehicle Maintenance | — |
| Nov 13, 2025 | 39617C | Operating a CMV without proof of a periodic inspection | Vehicle Maintenance | — |
| Oct 17, 2025 | 39355C1 | Truck Tractor manufactured on or after March 1 1997 not equipped with an antilock brake system | Vehicle Maintenance | — |
| Oct 17, 2025 | 3963A1B | Brakes (general) Explain: | Vehicle Maintenance | — |
| May 30, 2025 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| May 30, 2025 | 39353B | CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| May 30, 2025 | 39375A | Flat tire or fabric exposed | Vehicle Maintenance | Yes |
| Oct 22, 2024 | 39347A | Inadequate brakes for safe stopping - Brake Lining condition | Vehicle Maintenance | — |