DUNCAN DIESEL LLC
AUTHORIZEDUSDOT
4290172
MC Number
N/A
Fleet Size
1
Total Drivers
1
Last updated: March 11, 2026
Safety overview
DUNCAN DIESEL LLC is a small interstate motor carrier based in TRUCKEE, California, operating 1 power unit with 1 drivers. None of their 5 BASIC scores cross the 75th percentile intervention line. Their driver out-of-service rate of 0.0% comes in under the 5.51% national average. No crashes on file. FMCSA records show 2 inspections for this carrier.
BASIC scores
SMS PercentilesHigher percentile = worse performance relative to peers. Scores at or above 75% may trigger an FMCSA investigation.
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.
For reference, the average driver OOS rate in California is 8.9% and the average vehicle OOS rate is 22.3% across 311,254 carriers.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Private (Property)
- 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
2
Total
50%
Driver %
Crash history
0
Total Crashes
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Frequently asked questions
Is DUNCAN DIESEL LLC authorized to operate?
Yes. DUNCAN DIESEL LLC (USDOT #4290172) currently holds "AUTHORIZED" status with FMCSA. They're registered as an interstate carrier.
What is DUNCAN DIESEL LLC's safety record?
Based on FMCSA data, DUNCAN DIESEL LLC has no BASIC scores above the 75th percentile intervention threshold. They haven't received a formal FMCSA safety rating. No crashes on record.
How many trucks does DUNCAN DIESEL LLC operate?
DUNCAN DIESEL LLC operates 1 power unit with 1 driver on file. That makes them a small carrier.
Does DUNCAN DIESEL LLC transport hazardous materials?
No. DUNCAN DIESEL LLC does not have a hazardous materials flag in the FMCSA database.
Where is DUNCAN DIESEL LLC located?
DUNCAN DIESEL LLC is based in TRUCKEE, California at 10745 ALLENBY WAY, 96161. Phone: (530) 575-8710.
What are DUNCAN DIESEL LLC's out-of-service rates?
DUNCAN DIESEL LLC's driver out-of-service rate is 0.0%, compared to the national average of 5.51%. Below average, which is a good sign. Their vehicle out-of-service rate is 0.0% (national average: 20.72%). Below average, suggesting the fleet is well-maintained.