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UNBRIDLED OIL FIELD SERVICES LLC
Monahans, TX
CarrierChk vetting signal
Review recommended
Elevated Out-of-Service Rate
62.5% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 99% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
See details ↓
FMCSA status: Active registration · no operating authority · DOT 3028320
Active
No Safety Rating
Broker Vetting Summary
Key signals from current FMCSA records
Authority
No Active Authority
Common carrier
Insurance
Not Found
No coverage amount on file
Safety
Not Rated
62.5% OOS · 56 inspections on record
Flags · 1
Elevated Out-of-Service Rate
62.5% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 99% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
Vetting notes
- Active FMCSA registration, but no active for-hire operating authority on record
- No active insurance filing found on record
- Vehicle out-of-service rate 60.0% — above the 20.7% national average
- 56 FMCSA inspections on record
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
3028320
Safety Rating
Not Rated
Operation Classification
Authorized for hire
MCS-150 Filed
January 20, 2026
FMCSA Registration
July 17, 2017
Annual Mileage
2,105,004 mi (2025)
Contact Information
Address
601 W Interstate 20, Monahans, TX 79756-7434
Phone
Email
Owner / Officer
Esgar Martinez
Cargo Types
General FreightLiquids/GasesOilfield EquipmentWater/WellOther Cargo
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
56
Driver Inspections
1
Vehicle Inspections
56
Out-of-Service Violations
48
Violations by Category
Vehicle Maintenance333
Unsafe Driving0
Hours of Service0
OOS Rates vs. National Average
Vehicle OOS Rate60.0% · national avg 20.7%
⚠ Above national average (39.3pp higher)
62.5% of 40 inspections in the last 24 months put a driver or vehicle out of service —
99th percentile among carriers with 25–99 inspections (lower is better).
CarrierChk calculation from FMCSA roadside inspection records, not an FMCSA score.
Inspection Trend by Year
2026
2025
2024
Violation Rate by Category
Share of roadside inspections in FMCSA's rolling 24-month window that found a violation in each category. The individual violations are listed under each inspection in Inspection Details below. None of this is the basis of the safety rating, which comes from an on-site compliance review.
Vehicle Maintenance
40 of 41 inspections
Unsafe Driving
0 of 41 inspections
Hours of Service
0 of 41 inspections
Driver Fitness
1 of 41 inspections
Controlled Substances
0 of 41 inspections
Crash History (4)
Crashes reported to FMCSA in the last 24 months. A crash appearing here is a reported event, not a finding of fault.
4
Crashes
0
Fatalities
2
Injuries
4
Tow-aways
| Date | State | Fatal | Injured | Tow | Conditions |
|---|---|---|---|---|---|
| May 14, 2026 | TX | — | — | Yes | No Adverse Conditions · Daylight · Dry |
| February 2, 2026 | TX | — | 1 | Yes | No Adverse Conditions · Dark - Not Lighted · Dry |
| March 3, 2025 | TX | — | 1 | Yes | No Adverse Conditions · Dark - Not Lighted · Dry |
| November 9, 2024 | TX | — | — | Yes | No Adverse Conditions · Dark - Not Lighted · Dry |
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
TX50
Fleet & Equipment (62)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~29
of 20 reported to FMCSA
Trailers
~33
seen at inspection
Equipment types observed
Tractor
28
Semi-trailer
11
Tank
11
Flatbed
8
Grain / Hopper
1
Pickup
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2004 Freightliner Columbia | Tractor · Class 8 | 1FUJA6CGX4LM10721 | 4 | 3 |
| Trox | Semi-trailer | 1T9TS4026AR719373 | 4 | 3 |
| 2011 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X5BD131062 | 4 | 2 |
| 2011 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X2BD124991 | 3 | 2 |
| 2013 Freightliner Cascadia | Tractor · Class 8 | 3AKJGLDV6DSBT7682 | 3 | 1 |
| 2008 Holden Industries, Inc Holden Trailers | Flatbed · 40 ft | 12HLB40238N351642 | 2 | — |
| 2006 Freightliner CST120 | Tractor · Class 8 | 1FUJBBCG56LU70754 | 2 | 2 |
| 2010 Freightliner CST120 | Tractor · Class 8 | 1FUJBBCK6ADAK5420 | 2 | 1 |
| 2008 Freightliner CST120 | Tractor · Class 8 | 1FUJBBCK78LZ93037 | 2 | 2 |
| Othr | Semi-trailer | 1G9VT40287H016647 | 2 | 1 |
Show all 62 units
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| Trox | — | 1T9TA4327C1867600 | 2 | 1 |
| Trox | Semi-trailer | 1T9TS40250R719251 | 2 | 1 |
| 2007 Transcraft | Flatbed · 48 ft | 1TTF4820172018794 | 2 | 1 |
| 2009 Dragon Products | Tank · 42 ft | 1UNST42259L068214 | 2 | 2 |
| 2012 Dragon Products | Tank · 42 ft | 1UNST4229CL114277 | 2 | 2 |
| 2007 Dragon Products | Tank · 42 ft | 1UNST422X7L052104 | 2 | 2 |
| 2002 Utility Trailer Manufacturer | Flatbed · 48 ft | 1UYFS24802A883001 | 2 | — |
| 2003 Kenworth W900 | Tractor · Class 8 | 1XKWDU9X23J384470 | 2 | 1 |
| 2012 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X3CD171397 | 2 | 1 |
| 2012 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X4CD125089 | 2 | 2 |
| 2016 Freightliner Cascadia | Tractor · Class 8 | 3AKJGLD52GSGR4254 | 2 | — |
| 2012 Western Star 4900 | Tractor · Class 8 | 5KJJALDR1CPBK1858 | 2 | 2 |
| Othr | Semi-trailer | 5VYST4322CH004350 | 2 | 2 |
| Beal | Semi-trailer | D73060301 | 2 | 1 |
| 2001 Fontaine Trailer Co. | Flatbed · 48 ft | 13N14830215998977 | 1 | — |
| Clar | Semi-trailer | 1CD2L45209A009801 | 1 | 1 |
| 2012 Fortitude Manufacturing | Tank · 41 ft | 1F9ST4120CH408076 | 1 | — |
| 2020 Ford F-450 | Pickup · Class 3 | 1FT8W4DTXLEC28866 | 1 | 1 |
| 2008 Freightliner Columbia | Tractor · Class 8 | 1FUJA6CK78DY52523 | 1 | 1 |
| 2008 Freightliner Columbia | Tractor · Class 8 | 1FUJA6CKX8LZ83080 | 1 | 1 |
| 2006 Freightliner CST120 | Tractor · Class 8 | 1FUJBBCK16LU41255 | 1 | — |
| 2015 Galyean Equipment Co. | Tank · 42 ft | 1G9VT4224FH015068 | 1 | 1 |
| 2005 Great Dane Trailers | Flatbed · 96 ft | 1GRDM96295M702844 | 1 | 1 |
| 2008 International DF697 | Tractor · Class 8 | 1HSXYSCT18J646752 | 1 | 1 |
| Jack | Semi-trailer | 1J9TA4326C1364554 | 1 | — |
| 2001 Fruehuaf | Flatbed · 45 ft | 1JJF452F61S770634 | 1 | 1 |
| 2028 Pioneer Fabricating Inc Tank Trailer | Tank · 43 ft | 1P9TA4320W1260910 | 1 | 1 |
| Trox | — | 1T9TA4320D1867214 | 1 | 1 |
| Trox | Semi-trailer | 1T9TS4021DR719723 | 1 | — |
| 2013 Transcraft/wabash Steel Flatbed | Flatbed · 48 ft | 1TTF482S5D3759523 | 1 | 1 |
| Drag | Semi-trailer | 1UN5T42208L063906 | 1 | 1 |
| 2006 Dragon Products | Tank · 42 ft | 1UNST42206L042048 | 1 | 1 |
| 2012 Dragon Products | Tank · 42 ft | 1UNST4225CL113952 | 1 | — |
| 2008 Dragon Products | Tank · 42 ft | 1UNST422X8L063802 | 1 | 1 |
| 2012 Dragon Products | Tank · 42 ft | 1UNST422XCL114465 | 1 | — |
| 2007 Kenworth T6 Series | Tractor · Class 8 | 1XKADB9X37J179440 | 1 | 1 |
| 2014 Peterbilt 587 | Tractor · Class 8 | 1XP4D49X6ED134250 | 1 | 1 |
| 2005 Peterbilt 378 | Tractor · Class 8 | 1XPFD49X75N845328 | 1 | 1 |
| 2012 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X3CD125150 | 1 | — |
| 2012 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X5CD125117 | 1 | — |
| 2011 Peterbilt 386 | Tractor · Class 8 | 1XPHDP9X8BD126276 | 1 | 1 |
| 2007 International L9227 | Tractor · Class 8 | 2HSCESBR17C437036 | 1 | — |
| 2007 International L9427 | Tractor · Class 8 | 2HSCNAPR57C447491 | 1 | — |
| 2018 Freightliner Cascadia | Tractor · Class 8 | 3AKJGBDV8JSJP7152 | 1 | — |
| 2016 Freightliner Cascadia | Tractor · Class 8 | 3AKJGLBG7GSGY0077 | 1 | 1 |
| 2016 Freightliner Cascadia | Tractor · Class 8 | 3AKJGLD57GSHF1740 | 1 | — |
| 2018 Freightliner Cascadia | Tractor · Class 8 | 3AKJGLDR7JSKA7973 | 1 | — |
| 2020 Pj | Flatbed · 40 ft | 4P5LD4025L1315326 | 1 | 1 |
| Wils | Semi-trailer | 4WWGGB6B6XM602806 | 1 | 1 |
| 2015 Pci Manufacturing | Tank · 43 ft | 56CPA1U25FT600541 | 1 | — |
| 2008 Manac Trailers Usa Manac | Grain / Hopper | 5MC1116238P009777 | 1 | — |
| Kauf | Semi-trailer | 5SHFR42317B000347 | 1 | — |
A vehicle appearing here was recorded in an inspection — it is not proof the carrier still operates it today.
Inspection Details
Each roadside inspection with its violations
Inspection Records (56)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| September 19, 2026 | V262570686 | TX, TX | II | 7 | 2 | UNBRIDLED OIL FIELD SERVICES | Truck Tractor Semi-trailer |
— — |
1FUJGLBGXBSAV9295 1T9TS4027CR719255 |
TX 1N49128 TX 146C340 |
| 393.75A3-TAOL | OOSTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Tires | ||||||||
| 396.3A1-STLN | OOSSteering - Loose nuts on tie rods/pitman arm/drag link/steering arm/tie rod | Steering Mechanism | ||||||||
| 393.11A1-CSURR | Conspicuity Systems - Truck tractor, upper rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 1997 | Reflective Sheeting | ||||||||
| 393.11A1-CSLRR | Conspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 1997 | Reflective Sheeting | ||||||||
| 393.9A-LBL | Lighting - Backup lamp inoperative | Lighting | ||||||||
| 393.9A-LFTSI | Lighting - Front - Turn signal - inoperative | Lighting | ||||||||
| 393.9A-LHWS | Lighting - Hazard warning signal(s) inoperative | Lighting | ||||||||
| September 5, 2026 | V262552163 | TX, TX | II | 8 | — | DIAMONDBACK OILFIELD SERVICES | Truck Tractor Semi-trailer |
— — |
1XKADR9X5XR798874 4S9V6TA29EG347014 |
TX 1P15803 TX 235B386 |
| 393.19 | Inoperative/Defective Hazard Warning Lamp | Lighting | ||||||||
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 393.53B-B | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Brakes All Others | ||||||||
| 393.55E-B | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998 | Brakes All Others | ||||||||
| 393.78A-WS | Washers - Inoperative washing system. | Windshield/ Glass/ Markings | ||||||||
| 393.9A-LSLI | Lighting - Stop lamps - Any inoperative. | Lighting | ||||||||
| 393.9A-LRLI | Lighting - Tail lamp - Any inoperative | Lighting | ||||||||
| 393.9A-LTSI | Lighting - Turn signal - Any inoperative on the rearmost vehicle. | Lighting | ||||||||
| August 29, 2026 | V262538256 | TX, TX | II | 7 | — | BLACKBEARD | Truck Tractor Semi-trailer |
FREIGHTLINER — |
1FUJA6CK78DY52523 1UN5T42208L063906 |
TX 1N40604 TX 147B047 |
| 393.11A1-LCHL | Lighting - Lamps improper color, height, location. | Lighting | ||||||||
| 393.11B-CSLRR | Conspicuity Systems - Trailers, lower rear retro reflective sheeting inadequate on vehicle manufactured on or after December 1, 1993 | Reflective Sheeting | ||||||||
| 393.207A-SAPPCBLM | Suspension - Axle positioning part cracked/broken/loose/missing. | Suspension | ||||||||
| 396.17C-PI | Operating a CMV without documentation of a periodic inspection | Inspection Reports | ||||||||
| 396.3A1-OAL | Other - Any air leak not attributed to the brake or suspension system. | Brakes All Others | ||||||||
| 396.5B-L | Lubrication - Oil or grease leak | Other Vehicle Defect | ||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| July 30, 2026 | V262493598 | 800 TX464 LOOP, TX | II | 11 | 3 | UNBRIDLED OILFIELD YARD | Truck Tractor Semi-trailer |
FREIGHTLINER DRAGON PRODUCTS |
1FUJBBCK78LZ93037 1UNST42259L068214 |
TX 1N64502 TX 137B198 |
| 393.207C | OOSLeaf spring assembly defective/missing | Suspension | ||||||||
| 393.9TS | OOSInoperative turn signal | Lighting | ||||||||
| 396.3A1-TC | OOSTire in contact with another part of the vehicle | Tires | ||||||||
| 393.203C | Hood not securely fastened | Cab Body Frame | ||||||||
| 393.45B2PC | Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit | Brakes All Others | ||||||||
| 393.45B2UV | Brake Hose or Tubing Chafing and/or Kinking Under Vehicle | Brakes All Others | ||||||||
| 393.60C | Windshield - Damaged or Discolored | Windshield/ Glass/ Markings | ||||||||
| 393.75A1 | Tire-ply or belt material exposed | Tires | ||||||||
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 396.5B | Oil and/or grease leak | Other Vehicle Defect | ||||||||
| July 16, 2026 | V262470997 | FM 1450 MP 218, TX | II | 2 | 1 | UNBRIDLED OILFIELD SERVICES | Truck Tractor Trailer |
FREIGHTLINER TROX |
1FUJA6CKX8LZ83080 1T9TA4320D1867214 |
TX 1L67441 TX 108B485 |
| 393.207A | OOSAxle positioning parts defective/missing | Suspension | ||||||||
| 393.95A | No/discharged/unsecured fire extinguisher | Emergency Equipment | ||||||||
| July 6, 2026 | V262456541 | FM-1450 MILE MARKER, TX | II | 3 | 1 | DIAMOND BACK ENERGY | Truck Tractor Semi-trailer |
FREIGHTLINER TROX |
1FUJA6CGX4LM10721 1T9TS4026AR719373 |
TX 1N40646 TX 142B629 |
| 393.75A3 | OOSTire-flat and/or audible air leak | Tires | ||||||||
| 393.60C | Windshield - Damaged or Discolored | Windshield/ Glass/ Markings | ||||||||
| 393.75A3 | Tire-flat and/or audible air leak | Tires | ||||||||
| May 25, 2026 | V262382989 | FM1776 MILE MARKER 3, TX | II | 3 | 1 | VELOCITY SWD | Truck Tractor Semi-trailer |
FREIGHTLINER TROX |
1FUJA6CGX4LM10721 1T9TS4026AR719373 |
TX 1N40646 TX 142B629 |
| 393.9TS | OOSInoperative turn signal | Lighting | ||||||||
| 393.60C | Windshield - Damaged or Discolored | Windshield/ Glass/ Markings | ||||||||
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| May 4, 2026 | V262347126 | 354M US87 SB, TX | II | 6 | 1 | UNBRIDLED OILFIELD SERVICES | Truck Tractor Semi-trailer |
PETERBILT DRAGON PRODUCTS |
1XPHD49X2BD124991 1UNST4229CL114277 |
TX 1N74474 TX 153C477 |
| 393.209D | OOSSteering system components worn, welded, or missing | Steering Mechanism | ||||||||
| 393.47A | Inadequate brakes for safe stopping - Brake Lining condition | Brakes All Others | ||||||||
| 393.60C | Windshield - Damaged or Discolored | Windshield/ Glass/ Markings | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9H | Inoperable head lamps | Lighting | ||||||||
| 396.5B | Oil and/or grease leak | Other Vehicle Defect | ||||||||
| April 24, 2026 | V262299667 | FM 829 MM 304, TX | II | 6 | 1 | DIAMONDBACK | Truck Tractor Semi-trailer |
PETERBILT DRAGON PRODUCTS |
1XPHD49X2BD124991 1UNST42206L042048 |
TX 1N74474 TX 239B280 |
| 393.9TS | OOSInoperative turn signal | Lighting | ||||||||
| 393.11 | No or defective lighting devices or reflective material as required | Reflective Sheeting | ||||||||
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.95A | No/discharged/unsecured fire extinguisher | Emergency Equipment | ||||||||
| April 21, 2026 | V262329473 | IH20 MM 44, TX | II | 17 | 2 | MEQUITE | Truck Tractor Semi-trailer |
KENWORTH GALYEAN EQUIPMENT CO. |
1XKADB9X37J179440 1G9VT4224FH015068 |
TX 1N69604 TX 124C517 |
| 392.9A2-C | OOSCargo - Vehicle components or dunnage not secured | General Securement | ||||||||
| 393.75A3 | OOSTire-flat and/or audible air leak | Tires | ||||||||
| 393.11TL | Truck-Tractor lower rear mud flaps retroreflective sheeting / reflex reflective material requirements for vehicles manufactured after July 1997 | Reflective Sheeting | ||||||||
| 393.11TU | Truck-Tractor upper body corner requirements for retroreflective sheeting or reflex reflective material for vehicles manufactured after July 1997 | Reflective Sheeting | ||||||||
| 393.19 | Inoperative/Defective Hazard Warning Lamp | Lighting | ||||||||
| 393.45DLPC | Brake Connections with Leaks - Connection to Power Unit | Brakes All Others | ||||||||
| 393.45DLUV | Brake Connections with Leaks Under Vehicle | Brakes All Others | ||||||||
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9T | Inoperable tail lamp | Lighting | ||||||||
| 393.9TS | Inoperative turn signal | Lighting | ||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| 396.5B | Oil and/or grease leak | Other Vehicle Defect | ||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
Shippers Seen at Inspections
Shipper names recorded by roadside inspectors over roughly the last three years. Only inspected loads appear, so this is a sample of who the carrier hauls for, not a complete customer list. Names are as entered at the roadside; blanks and placeholders such as “N/A” or “same as carrier” are left out.
| Shipper | Inspections | Most recent |
|---|---|---|
| DIAMONDBACK | 4 | April 24, 2026 |
| VELOCITY SWD | 2 | May 25, 2026 |
| EXXON | 2 | April 10, 2026 |
| DIAMONDBACK OILFIELD SERVICES | 1 | September 5, 2026 |
| BLACKBEARD | 1 | August 29, 2026 |
| UNBRIDLED OILFIELD YARD | 1 | July 30, 2026 |
| DIAMOND BACK ENERGY | 1 | July 6, 2026 |
| MEQUITE | 1 | April 21, 2026 |
| TALL CITY WAATER STATION | 1 | July 8, 2025 |
| FLUIDO ENERGY SERVCIES | 1 | May 21, 2025 |
| CANNONBALL | 1 | May 21, 2025 |
| TALL CITY BRINE | 1 | April 30, 2025 |
8 more shippers named at fewer inspections.
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: September 27, 2026.
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