WILLIAM NG

AUTHORIZED

DBA: DIAMOND FABRICATION AND WELDING

676 MAIN ST, CHESTER, CA, 96020|(530) 519-4729

USDOT

4526025

MC Number

N/A

Fleet Size

1

Total Drivers

1

Last updated: March 11, 2026

Safety overview

WILLIAM NG is a small interstate motor carrier based in CHESTER, California, operating 1 power unit with 1 drivers. 2 of their 5 BASIC scores sit above the 75th percentile intervention threshold. The rest fall within acceptable ranges. No crashes on file.

BASIC scores

SMS Percentiles

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

Unsafe Driving
72%
HOS / Fatigue
74%
👤Driver Fitness
78%
Controlled Substances
90%
🔧Vehicle Maintenance
58%

Company details

Entity Type
N/A
Carrier Operation
Interstate
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

0

Total

Driver %

Driver Inspections0
Vehicle Inspections0

Crash history

0

Total Crashes

Fatal Crashes0
Injury Crashes0
Tow Crashes0

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Frequently asked questions

Is WILLIAM NG authorized to operate?

Yes. WILLIAM NG (USDOT #4526025) currently holds "AUTHORIZED" status with FMCSA. They're registered as an interstate carrier.

What is WILLIAM NG's safety record?

WILLIAM NG has 2 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 WILLIAM NG operate?

WILLIAM NG operates 1 power unit with 1 driver on file. That makes them a small carrier.

Does WILLIAM NG transport hazardous materials?

No. WILLIAM NG does not have a hazardous materials flag in the FMCSA database.

Where is WILLIAM NG located?

WILLIAM NG is based in CHESTER, California at 676 MAIN ST, 96020. Phone: (530) 519-4729.