Calfrac Well Services Corp is an active interstate carrier based in Denver, CO.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 1 | 53 | 0 |
| Tractors | 513 | 0 | 0 |
| Trailers | 557 | 2 | 0 |
| Buses (16+) | 2 | 0 | 0 |
| Total Power Units | 577 | ||
Distinct vehicles · 24 mo
vs 577 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 60% | 95% | Around peer average |
| HOS Compliance | 100% | 97% | Worse than most peers |
| Driver Fitness | 70% | 96% | Around peer average |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 90% | 91% | 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 | 3 | — | 6.67% |
| Vehicle | 0 | 18 | — | 22.26% |
| Hazmat | 3 | 0 | 0.00% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2025 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 82 | 18 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 23, 2026 | CO | TRUCK TRACTOR | 0 | 0 |
| Mar 5, 2026 | MT | TRUCK TRACTOR | 0 | 0 |
| Feb 26, 2026 | MT | TRUCK TRACTOR | 0 | 0 |
| Feb 26, 2026 | MT | TRUCK TRACTOR | 0 | 0 |
| Feb 10, 2026 | CO |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 3 | 0.03 | — |
| HOS Compliance | 9 | 0.45 | — |
| Vehicle Maintenance | 44 | 4.79 | — |
| Driver Fitness | 2 | 0.10 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 13 states. Top state ND accounts for 30% of activity. Activity outside home state (CO): 73%.
+8 other states with fewer inspections
| 24 |
| Hours-of-Service Compliance | 16 | 5 | 0 |
| Driver Fitness | 3 | 2 | 2 |
| Unsafe Driving | 3 | 2 | 0 |
| Hazardous Materials Compliance | 2 | 0 | 0 |
| TRUCK TRACTOR |
| 3 |
| 2 |
| Feb 5, 2026 | ND | TRUCK TRACTOR | 0 | 0 |
| Jan 26, 2026 | UT | TRUCK TRACTOR | 1 | 0 |
| Jan 14, 2026 | CO | TRUCK TRACTOR | 0 | 0 |
| Jan 7, 2026 | ND | TRUCK TRACTOR | 1 | 0 |
| Jan 5, 2026 | ND | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 10, 2026 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Feb 10, 2026 | 3965BL | Lubrication - Oil or grease leak | Vehicle Maintenance | — |
| Feb 10, 2026 | 3965HL | Hubs - Leaking hub | Vehicle Maintenance | Yes |
| Jan 26, 2026 | 3939AHLLH | Lighting - Headlamp(s) fail to operate on low and high beam | Vehicle Maintenance | — |
| Jan 7, 2026 | 3958A | HOS (Form) - Paper Log/Logging Programs Form and Manner | Hours-of-Service Compliance | — |
| Dec 18, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Dec 18, 2025 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Dec 18, 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 |
| Nov 11, 2025 | 3963A1F | Fuel - Dripping leak. | Vehicle Maintenance | Yes |
| Oct 21, 2025 | 3963A1OAL | Other - Any air leak not attributed to the brake or suspension system. | Vehicle Maintenance | — |