Re Mason Engineering Llc is an active intrastate non-hazmat carrier based in Fresno, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 15 | 0 | 0 |
| Tractors | 15 | 0 | 0 |
| Trailers | 12 | 0 | 0 |
| Total Power Units | 15 | ||
Distinct vehicles · 24 mo
vs 15 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 | 83% | 94% | Worse 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 | 85% | 93% | 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 | 5 | — | 22.26% |
| Hazmat | 0 | 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 | 35 | 7 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 4, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Feb 5, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Nov 5, 2025 | CA | STRAIGHT TRUCK | 2 | 2 |
| Nov 5, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Sep 2, 2025 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.88 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 9 | 5.25 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 1 state. Top state CA accounts for 100% of activity. Activity outside home state (CA): 0%.
| 14 |
| Unsafe Driving | 1 | 1 | 0 |
| CA |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Aug 27, 2025 | CA | STRAIGHT TRUCK | 1 | 1 |
| Jun 3, 2025 | CA | TRUCK TRACTOR | 1 | 0 |
| Apr 11, 2025 | CA | STRAIGHT TRUCK | 2 | 1 |
| Jan 21, 2025 | CA | TRUCK TRACTOR | 3 | 0 |
| Jan 8, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Nov 5, 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 5, 2025 | 3965HL | Hubs - Leaking hub | Vehicle Maintenance | Yes |
| Aug 27, 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 |
| Jun 3, 2025 | 3922SLLCP | State/Local Laws - Operate a CMV while using a cellular phone | Unsafe Driving | — |
| Apr 11, 2025 | 39347CBSAMBD | Drum Brake - Slack adjuster length mismatched on the same axle other than a steering axle | Vehicle Maintenance | — |
| Apr 11, 2025 | 3939ALSLIWR | Lighting - Stop lamps - Both inoperative when required to be on | Vehicle Maintenance | Yes |
| Jan 21, 2025 | 393207ASTCB | Suspension - Suspension connecting rod or tracking component assembly (including spring leaves used as a suspension connecting rod) or any part used for attaching | Vehicle Maintenance | — |
| Jan 21, 2025 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Jan 21, 2025 | 39370B1IICDBL | Coupling - Bolted upper coupler has any loose bolt | Vehicle Maintenance | — |
| Dec 2, 2024 | 39343DBIPBS | Brake - Inoperative or missing trailer Spring Brake | Vehicle Maintenance | — |