Montana Frontier Sandstone Llc is an active intrastate hazmat carrier based in Roundup, MT.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 2 | 0 | 0 |
| Tractors | 2 | 0 | 0 |
| Trailers | 3 | 1 | 0 |
| Total Power Units | 2 | ||
Distinct vehicles · 24 mo
vs 2 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 | 97% | 98% | Worse than most peers |
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 | 7 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
Where they run
Inspected in 1 state. Top state MT accounts for 100% of activity. Activity outside home state (MT): 0%.
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 17 | 4 | 6 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Dec 16, 2025 | MT | STRAIGHT TRUCK | 2 | 1 |
| Nov 21, 2025 | MT | TRUCK TRACTOR | 11 | 4 |
| Mar 11, 2025 | MT | TRUCK TRACTOR | 4 | 2 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 3 | 19.57 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| Date | Code | Description | BASIC | OOS |
|---|
| Dec 16, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Dec 16, 2025 | 3965HL | Hubs - Leaking hub | Vehicle Maintenance | Yes |
| Nov 21, 2025 | 393104BC | Cargo - Damaged securement devices/tiedowns | Vehicle Maintenance | — |
| Nov 21, 2025 | 393106DC | Cargo - Insufficient aggregate working load limit for cargo transported | Vehicle Maintenance | Yes |
| Nov 21, 2025 | 393201AFRCLS | Frame - Cracked/loose/sagging/broken frame or chassis | Vehicle Maintenance | — |
| Nov 21, 2025 | 393203CCBP | Cab and Body Parts - Hood not securely fastened | Vehicle Maintenance | — |
| Nov 21, 2025 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Nov 21, 2025 | 39348ABMBCBD | Drum Brake - Missing/broken component(s) | Vehicle Maintenance | — |
| Nov 21, 2025 | 39353BB | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| Nov 21, 2025 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |