HaulerCheck · https://haulercheck.com/carrier/890170-sergio-valenzuela-sierra/ · Checked 2026-10-19 18:28 UTC · Census and inspections Oct 19, 2026 · Authority and insurance: Last known · FMCSA snapshot May 14, 2026
SERGIO VALENZUELA SIERRA
Doing business as TRANSPORTES ISA
Review before booking · 2 signals
How risk signals workFacts from the FMCSA record that call for a closer look. They are not a finding of wrongdoing. Authority and insurance are last known from May 14, 2026.
- Conditional FMCSA safety ratingRated Apr 30, 2007. FMCSA found safety controls that needed correcting.
- Vehicle out-of-service rate well above the state average32.1% vs CI average 21.2%.
No cargo cover filed with FMCSA
Not a live check. FMCSA has not published a Motus record for this carrier, so authority and insurance show the last known status from May 14, 2026. Confirm on Motus ↗ before booking.
What to verify next
- Confirm authority and insurance on the official Motus record ↗: our copy is the last known status from May 14, 2026. Safety record: SAFER ↗.
- Call back on the number on file, (915) 356-8992, not a number from an email or load board.
- Check that the MC number you were given is MX387633.
- Ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Insurance on file
No insurance filings were found in the public FMCSA data for this carrier.
Roadside inspections Oct 19, 2024 – Oct 19, 2026
35 of 109 · CI avg 21.2%
2 of 115 · CI avg 1.3%
10 most recent inspections
| Date | State | Level | Violations | Out of service |
|---|---|---|---|---|
| Oct 14, 2026 | TX | 2 | 3 | No |
| Oct 13, 2026 | US | 1 | 3 | No |
| Oct 12, 2026 | TX | 1 | 6 | No |
| Oct 8, 2026 | TX | 1 | 8 | No |
| Oct 7, 2026 | US | 1 | 4 | No |
| Oct 6, 2026 | TX | 1 | 6 | Yes |
| Oct 5, 2026 | TX | 1 | 6 | Yes |
| Sep 30, 2026 | TX | 3 | 1 | No |
| Sep 29, 2026 | TX | 1 | 3 | No |
| Sep 25, 2026 | US | 1 | 2 | No |
How these rates are calculated
Period: Oct 19, 2024 – Oct 19, 2026. Vehicle rate = vehicle inspections with a vehicle out-of-service order ÷ vehicle inspections (levels 1, 2, 5 and 6). Driver rate uses levels 1, 2, 3 and 6. The CI average covers 77,320 vehicle and 94,933 driver inspections of all CI-based carriers in this period. It mixes every type of operation, so compare with care; rates based on a handful of inspections say little. FMCSA's own SMS measures are weighted differently: SMS profile ↗ · SAFER snapshot ↗
Violations in FMCSA's SMS last 24 months
394 violations counted in FMCSA's Safety Measurement System (SMS), 60 of them serious enough to put the driver or vehicle out of service.
Why is this different from the 479 violations above?
The inspections section's number counts every violation written on the inspection reports in our Oct 19, 2024 – Oct 19, 2026 window. The SMS count comes from FMCSA's own monthly SMS snapshot, which uses its own 24-month window and only the violations it scores. Both are FMCSA figures; they measure different things.
| Category (FMCSA BASIC) | Violations | Out of service | Share | CI share |
|---|---|---|---|---|
| Vehicle Maintenance | 389 | 58 | 98.7% | 92.2% |
| Driver Fitness | 5 | 2 | 1.3% | 6.5% |
10 most frequent violations
| Violation | Times | Out of service |
|---|---|---|
| Wipers - Inoperative / missing / damaged wipers Windshield/ Glass/ Markings · Vehicle Maintenance · code 39378 | 32 | 0 |
| Inoperable Required Lamp Clearance Identification Lamps/Other · Vehicle Maintenance · code 3939 | 27 | 3 |
| Oil and/or grease leak Other Vehicle Defect · Vehicle Maintenance · code 3965B | 18 | 0 |
| Inspection repair and maintenance of parts and accessories Wheels Studs Clamps Etc. · Vehicle Maintenance · code 3963A1 | 17 | 0 |
| Power steering violations Steering Mechanism · Vehicle Maintenance · code 393209E | 14 | 0 |
| Inoperative turn signal Lighting · Vehicle Maintenance · code 3939TS | 13 | 10 |
| Steering - Power steering leaking anywhere. Steering Mechanism · Vehicle Maintenance · code 393209ESPSLA | 12 | 0 |
| Air Brake - Any leak from a brake valve Brakes All Others · Vehicle Maintenance · code 3963A1ALBV | 10 | 0 |
| Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt Brakes Out of Adjustment · Vehicle Maintenance · code 39347E | 10 | 0 |
| No or defective lighting devices or reflective material as required Reflective Sheeting · Vehicle Maintenance · code 39311 | 10 | 0 |
Source: FMCSA SMS violation file, inspections in the last 24 months, published Oct 19, 2026. "Share" is this company's mix of violations; the CI column is the mix across all CI-based carriers, so you can see which kinds of problems stand out. A high count partly reflects fleet size and how often trucks are inspected.
Crashes Oct 19, 2024 – Oct 19, 2026
No reportable crashes in this period.
Company details FMCSA census · Oct 19, 2026
| USDOT number | 890170 |
|---|---|
| MC / docket | MX387633, MC387633 |
| Legal name | SERGIO VALENZUELA SIERRA |
| DBA name | TRANSPORTES ISA |
| Operation | Interstate |
| Business type | Corporation |
| Power units | 5 |
| Drivers | 3 |
| Annual mileage | 149,300 (2024) |
| Hazmat | No |
| Safety rating | Conditional (Apr 30, 2007) |
| USDOT number added | Jun 27, 2000 · 26 years ago |
| Last MCS-150 update | Aug 26, 2025 |
Cargo carried
General FreightMetal: Sheets, Coils, RollsLogs, Poles, Beams, LumberBuilding MaterialsMachinery, Large ObjectsFresh ProduceIntermodal ContainersMeatRefrigerated FoodBeveragesPaper ProductsUtilitiesConstruction
Change history
No changes to name, contact details, authority or insurance since we started tracking on Oct 18, 2026. We compare every company's FMCSA record each day.
to see it on your watchlist when something changes.
Questions about SERGIO VALENZUELA SIERRA
What does SERGIO VALENZUELA SIERRA's operating authority allow?
MX387633: Common carrier (may haul regulated property for hire for the general public).
Which information about SERGIO VALENZUELA SIERRA is old or missing?
Operating authority is the last known status from the FMCSA snapshot of May 14, 2026, not a current check. No insurance filings were found in the public data.
What should I verify before booking SERGIO VALENZUELA SIERRA?
Confirm the authority and insurance on the Motus record for USDOT 890170. Call the company back on the phone number on file, (915) 356-8992, not a number from an email or load board message. Check that the MC number the dispatcher gave you matches MX387633, and ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Other companies using (915) 356-8992
A shared number is common for related companies, dispatch services and family businesses. It is not proof of fraud, but it is worth knowing which company you are dealing with.
1 company
| Company | Location | USDOT | Docket | Trucks | Authority |
|---|---|---|---|---|---|
| SERGIO IVAN VALENZUELA PEREZ Carrier · DBA TRANSVALE |
Juarez, CI | 3104119 | MX84155 | 4 | Active Last known · May 14, 2026 |
Other trucking companies in Juarez, CI →
Company details from the FMCSA Company Census File (Oct 19, 2026). Inspections and crashes from FMCSA MCMIS files. About our data · Report an error on this page (how corrections work).
Page generated 2026-10-19 18:28 UTC.