GUARDIAN OILFIELD SERVICES INC
AUTHORIZEDUSDOT
1813088
MC Number
658598
Fleet Size
51
Total Drivers
48
Last updated: March 16, 2026
Safety overview
GUARDIAN OILFIELD SERVICES INC is a mid-size interstate motor carrier based in WEATHERFORD, Oklahoma, operating 51 power units with 48 drivers. 2 of their 5 BASIC scores sit above the 75th percentile intervention threshold. The rest fall within acceptable ranges. Their driver out-of-service rate of 2.1% comes in under the 5.51% national average. They have 4 crashes on file. FMCSA records show 97 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 Oklahoma is 11.9% and the average vehicle OOS rate is 28.8% across 26,015 carriers.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Authorized For Hire
- 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
97
Total
54%
Driver %
Crash history
4
Total Crashes
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Frequently asked questions
Is GUARDIAN OILFIELD SERVICES INC authorized to operate?
Yes. GUARDIAN OILFIELD SERVICES INC (USDOT #1813088) currently holds "AUTHORIZED" status with FMCSA. They're registered as an interstate carrier.
What is GUARDIAN OILFIELD SERVICES INC's safety record?
GUARDIAN OILFIELD SERVICES INC 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 GUARDIAN OILFIELD SERVICES INC operate?
GUARDIAN OILFIELD SERVICES INC operates 51 power units with 48 drivers on file. That puts them in the mid-size range.
Does GUARDIAN OILFIELD SERVICES INC transport hazardous materials?
Yes. GUARDIAN OILFIELD SERVICES INC is flagged for hazardous materials transportation with FMCSA. That means additional safety requirements and more frequent inspections.
Where is GUARDIAN OILFIELD SERVICES INC located?
GUARDIAN OILFIELD SERVICES INC is based in WEATHERFORD, Oklahoma at 1401 LERA SUITE THREE, 73096. Phone: (888) 904-8966.
What are GUARDIAN OILFIELD SERVICES INC's out-of-service rates?
GUARDIAN OILFIELD SERVICES INC's driver out-of-service rate is 2.1%, compared to the national average of 5.51%. Below average, which is a good sign. Their vehicle out-of-service rate is 8.6% (national average: 20.72%). Below average, suggesting the fleet is well-maintained.