DBA: Black Diamond Oilfield Services
Jaz Llc is an active intrastate hazmat carrier based in Gardendale, TX.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 43 | 0 | 0 |
| Tractors | 43 | 0 | 0 |
| Trailers | 43 | 0 | 0 |
| Total Power Units | 43 | ||
Distinct vehicles · 24 mo
vs 43 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 53% | 92% | Around peer average |
| HOS Compliance | 59% | 90% | Around peer average |
| Driver Fitness | 75% | 92% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 98% | 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 | 2 | — | 6.67% |
| Vehicle | 0 | 38 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Apr 1, 2025 | 0 | 1 | 1 | 1 |
| Oct 1, 2024 | 1 | 0 | 1 | 1 |
| Jul 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 284 | 56 | 39 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 10, 2026 | TX | TRUCK TRACTOR | 4 | 1 |
| Mar 5, 2026 | TX | TRUCK TRACTOR | 0 | 0 |
| Feb 20, 2026 | TX | TRUCK TRACTOR | 0 | 0 |
| Jan 29, 2026 | TX | TRUCK TRACTOR | 0 | 0 |
| Jan 16, 2026 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.02 | — |
| HOS Compliance | 2 | 0.04 | — |
| Vehicle Maintenance | 60 | 15.59 | — |
| Driver Fitness | 2 | 0.31 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 1 state. Top state TX accounts for 100% of activity. Activity outside home state (TX): 0%.
| Driver Fitness | 2 | 2 | 2 |
| Hours-of-Service Compliance | 2 | 0 | 0 |
| Unsafe Driving | 1 | 0 | 0 |
| TX |
| TRUCK TRACTOR |
| 3 |
| 0 |
| Jan 12, 2026 | TX | TRUCK TRACTOR | 2 | 0 |
| Jan 6, 2026 | TX | TRUCK TRACTOR | 1 | 0 |
| Dec 26, 2025 | TX | TRUCK TRACTOR | 2 | 0 |
| Dec 24, 2025 | TX | TRUCK TRACTOR | 3 | 0 |
| Dec 18, 2025 | TX | TRUCK TRACTOR | 9 | 3 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 10, 2026 | 39375A3 | Tire-flat and/or audible air leak | Vehicle Maintenance | Yes |
| Mar 10, 2026 | 39378 | Wipers - Inoperative / missing / damaged wipers | Vehicle Maintenance | — |
| Mar 10, 2026 | 3939 | Inoperable Required Lamp | Vehicle Maintenance | — |
| Mar 10, 2026 | 3939H | Inoperable head lamps | Vehicle Maintenance | — |
| Jan 16, 2026 | 39311UR | Upper Rear retroreflective sheeting or reflex reflecting material requirements for vehicles manufactured after December 1993 | Vehicle Maintenance | — |
| Jan 16, 2026 | 39378 | Wipers - Inoperative / missing / damaged wipers | Vehicle Maintenance | — |
| Jan 16, 2026 | 3939TS | Inoperative turn signal | Vehicle Maintenance | — |
| Jan 12, 2026 | 39311TL | Truck-Tractor lower rear mud flaps retroreflective sheeting / reflex reflective material requirements for vehicles manufactured after July 1997 | Vehicle Maintenance | — |
| Jan 12, 2026 | 3939 | Inoperable Required Lamp | Vehicle Maintenance | — |
| Jan 6, 2026 | 3939 | Inoperable Required Lamp | Vehicle Maintenance | — |