Prairie Field Services Llc is an active interstate carrier based in Casper, WY.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 113 | 0 | 0 |
| Tractors | 77 | 36 | 0 |
| Trailers | 110 | 0 | 0 |
| Total Power Units | 113 | ||
Distinct vehicles · 24 mo
vs 113 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 | 80% | 96% | Worse than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 60% | 96% | Around peer average |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 100% | 94% | 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 | 1 | — | 6.67% |
| Vehicle | 0 | 47 | — | 22.26% |
| Hazmat | 48 | 0 | 0.00% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2025 | 0 | 1 | 1 | 1 |
| Jan 1, 2025 | 0 | 0 | 2 | 2 |
| Oct 1, 2024 | 1 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 220 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 19, 2026 | WY | TRUCK TRACTOR | 0 | 0 |
| Mar 19, 2026 | WY | TRUCK TRACTOR | 1 | 1 |
| Feb 23, 2026 | UT | TRUCK TRACTOR | 5 | 0 |
| Feb 18, 2026 | TX | TRUCK TRACTOR | 2 | 0 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.30 | — |
| HOS Compliance | 1 | 0.00 | — |
| Vehicle Maintenance | 50 | 12.49 | — |
| Driver Fitness | 1 | 0.06 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 5 states. Top state UT accounts for 62% of activity. Activity outside home state (WY): 91%.
| 52 |
| 51 |
| Hazardous Materials Compliance | 11 | 1 | 1 |
| Driver Fitness | 1 | 1 | 1 |
| Hours-of-Service Compliance | 1 | 0 | 0 |
| Unsafe Driving | 1 | 1 | 0 |
| Jan 19, 2026 |
| TX |
| TRUCK TRACTOR |
| 2 |
| 0 |
| Jan 19, 2026 | TX | TRUCK TRACTOR | 0 | 0 |
| Jan 14, 2026 | UT | TRUCK TRACTOR | 4 | 0 |
| Jan 6, 2026 | TX | TRUCK TRACTOR | 1 | 1 |
| Jan 4, 2026 | TX | TRUCK TRACTOR | 0 | 0 |
| Dec 31, 2025 | TX | TRUCK TRACTOR | 2 | 2 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 19, 2026 | 393201AFRSC | Frame - Cracked siderail web around the radius into the bottom flange | Vehicle Maintenance | Yes |
| Feb 23, 2026 | 39311A1CSURR | Conspicuity Systems - Truck tractor upper rear retro reflective sheeting missing on vehicle manufactured on or after July 1 1997 | Vehicle Maintenance | — |
| Feb 23, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Feb 23, 2026 | 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 | — |
| Feb 23, 2026 | 39355D1B | Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1 1997 and each single unit CMV on or after 1998. | Vehicle Maintenance | — |
| Feb 23, 2026 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| Feb 18, 2026 | 3939 | Inoperable Required Lamp | Vehicle Maintenance | — |
| Feb 18, 2026 | 3939TS | Inoperative turn signal | Vehicle Maintenance | — |
| Jan 19, 2026 | 3939 | Inoperable Required Lamp | Vehicle Maintenance | — |
| Jan 19, 2026 | 39617C | Operating a CMV without proof of a periodic inspection | Vehicle Maintenance | — |