LOCKEN OIL LLC
AUTHORIZEDUSDOT
1891781
MC Number
802520
Fleet Size
16
Total Drivers
14
Last updated: March 15, 2026
Safety overview
LOCKEN OIL LLC is a small interstate motor carrier based in ISABEL, South Dakota, operating 16 power units with 14 drivers. Their safety profile raises flags: 3 of 5 BASIC categories exceed the 75th percentile, which is where FMCSA considers stepping in. Their driver out-of-service rate of 7.7% runs above the national average of 5.51%. No crashes on file. FMCSA records show 26 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 South Dakota is 7.6% and the average vehicle OOS rate is 29.8% across 6,099 carriers.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Authorized For Hire, Private (Property)
- Cargo Carried
- N
- Hazmat
- Yes
- 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
26
Total
60%
Driver %
Crash history
0
Total Crashes
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Frequently asked questions
Is LOCKEN OIL LLC authorized to operate?
Yes. LOCKEN OIL LLC (USDOT #1891781) currently holds "AUTHORIZED" status with FMCSA. They're registered as an interstate carrier.
What is LOCKEN OIL LLC's safety record?
LOCKEN OIL LLC has 3 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 LOCKEN OIL LLC operate?
LOCKEN OIL LLC operates 16 power units with 14 drivers on file. That makes them a small carrier.
Does LOCKEN OIL LLC transport hazardous materials?
Yes. LOCKEN OIL LLC is flagged for hazardous materials transportation with FMCSA. That means additional safety requirements and more frequent inspections.
Where is LOCKEN OIL LLC located?
LOCKEN OIL LLC is based in ISABEL, South Dakota at 301 NORTH MAIN, 57633. Phone: (605) 466-2143.
What are LOCKEN OIL LLC's out-of-service rates?
LOCKEN OIL LLC's driver out-of-service rate is 7.7%, compared to the national average of 5.51%. Higher than average, which could point to driver compliance issues. Their vehicle out-of-service rate is 0.0% (national average: 20.72%). Below average, suggesting the fleet is well-maintained.