MAMMOET USA SOUTH INC
AUTHORIZEDUSDOT
187887
MC Number
153117
Fleet Size
41
Total Drivers
31
Last updated: March 16, 2026
Safety overview
MAMMOET USA SOUTH INC is a mid-size interstate motor carrier based in ROSHARON, Texas, operating 41 power units with 31 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 0.0% comes in under the 5.51% national average. No crashes on file. FMCSA records show 12 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 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
- 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
12
Total
57%
Driver %
Insurance on file
Liability (BIPD)
ACE AMERICAN INSURANCE COMPANY — eff. Jul 1, 2016
Cargo
ST. PAUL FIRE & MARINE INSURANCE CO. — eff. Oct 22, 2009
Surety Bond
WESTCHESTER FIRE INSURANCE COMPANY — eff. Oct 28, 2013
Trust Fund
Not on file
Crash history
0
Total Crashes
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Frequently asked questions
Is MAMMOET USA SOUTH INC authorized to operate?
Yes. MAMMOET USA SOUTH INC (USDOT #187887) currently holds "AUTHORIZED" status with FMCSA. They're registered as an interstate carrier.
What is MAMMOET USA SOUTH INC's safety record?
MAMMOET USA SOUTH INC 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 MAMMOET USA SOUTH INC operate?
MAMMOET USA SOUTH INC operates 41 power units with 31 drivers on file. That puts them in the mid-size range.
Does MAMMOET USA SOUTH INC transport hazardous materials?
No. MAMMOET USA SOUTH INC does not have a hazardous materials flag in the FMCSA database.
Where is MAMMOET USA SOUTH INC located?
MAMMOET USA SOUTH INC is based in ROSHARON, Texas at 20525 FM 521, 77583. Phone: (281) 369-2200.
What are MAMMOET USA SOUTH INC's out-of-service rates?
MAMMOET USA SOUTH INC'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 22.2% (national average: 20.72%).