JAZ LLC

AUTHORIZED

DBA: BLACK DIAMOND OILFIELD SERVICES

10924 E COTTONWOOD RD, GARDENDALE, TX, 79758|(432) 934-4731

USDOT

2537037

MC Number

N/A

Fleet Size

43

Total Drivers

45

Last updated: March 16, 2026

Safety overview

JAZ LLC is a mid-size intrastate only (hazmat) motor carrier based in GARDENDALE, Texas, operating 43 power units with 45 drivers. Their safety profile raises flags: 4 of 5 BASIC categories exceed the 75th percentile, which is where FMCSA considers stepping in. Their driver out-of-service rate of 3.2% comes in under the 5.51% national average. They have 3 crashes on file (1 fatal, 1 with injuries). FMCSA records show 63 inspections for this carrier.

BASIC scores

SMS Percentiles

Higher percentile = worse performance relative to peers. Scores at or above 75% may trigger an FMCSA investigation.

Unsafe Driving
78%
HOS / Fatigue
82%
👤Driver Fitness
89%
Controlled Substances
23%
🔧Vehicle Maintenance
95%

Out-of-service rates vs. national average

An out-of-service order means the driver or vehicle was pulled from operation during a roadside inspection.

Driver OOS rate3.2%
National average5.5%
Vehicle OOS rate44.4%
National average20.7%

For reference, the average driver OOS rate in Texas is 13.3% and the average vehicle OOS rate is 29.7% across 174,809 carriers.

Company details

Entity Type
N/A
Carrier Operation
Intrastate Only (Hazmat)
Operation Classification
Authorized For Hire
Cargo Carried
N
Hazmat
No
Safety Rating Date
N/A

What are BASIC scores?

FMCSA tracks carrier performance through its Safety Measurement System (SMS), which scores carriers across six categories called BASICs. Each score is a percentile from 0 to 100, based on inspection and crash data from the past 24 months.

A score of 65 means the carrier performed worse than 65% of its peers. Anything above 75% can trigger FMCSA alerts or investigations. Brokers vetting new carriers should pay attention to scores above 50%.

Unsafe driving
Speeding, reckless driving, improper lane changes, seatbelt violations. All based on what officers find during roadside inspections.
HOS / Fatigue
Hours-of-service violations, logbook problems, driving past the allowed limits. Fatigued driving is one of the top causes of truck crashes in the US.
Driver fitness
Licensing problems, expired medical certificates, and other driver qualification issues.
Controlled substances
Drug and alcohol testing violations, possession, or impairment.
Vehicle maintenance
Brake problems, tire issues, lighting defects, load securement failures. Caught during the vehicle portion of roadside inspections.
Crash indicator
Based on crash history from state-reported data. Higher percentile means more crashes relative to the carrier's size and mileage.

Inspections

63

Total

50%

Driver %

Driver Inspections63
Vehicle Inspections63
Driver OOS Rate3.2%
Vehicle OOS Rate44.4%

Crash history

3

Total Crashes

Fatal Crashes1
Injury Crashes1
Tow Crashes3

Need trucking insurance?

Compare quotes from commercial truck insurers. Liability, cargo, physical damage coverage and more.

Get quotes (coming soon)

Frequently asked questions

Is JAZ LLC authorized to operate?

Yes. JAZ LLC (USDOT #2537037) currently holds "AUTHORIZED" status with FMCSA. They're registered as an intrastate only (hazmat) carrier.

What is JAZ LLC's safety record?

JAZ LLC has 4 BASIC scores above the 75th percentile, which is where FMCSA may look into a carrier. Brokers should weigh these scores alongside the inspection history and crash data before making a decision.

How many trucks does JAZ LLC operate?

JAZ LLC operates 43 power units with 45 drivers on file. That puts them in the mid-size range.

Does JAZ LLC transport hazardous materials?

No. JAZ LLC does not have a hazardous materials flag in the FMCSA database.

Where is JAZ LLC located?

JAZ LLC is based in GARDENDALE, Texas at 10924 E COTTONWOOD RD, 79758. Phone: (432) 934-4731.

What are JAZ LLC's out-of-service rates?

JAZ LLC's driver out-of-service rate is 3.2%, compared to the national average of 5.51%. Below average, which is a good sign. Their vehicle out-of-service rate is 44.4% (national average: 20.72%). Above average, which may point to vehicle maintenance gaps.