Carrier profile · USDOT 890170 · MX-387633 · Updated Jun 13, 2026

Sergio Valenzuela Sierra

DBA TRANSPORTES ISA

5 power unitsavg 15.4 yrRegional · 3 statesJUAREZ, CI75/100
CARRIER ACTIVEMX-387633 ACTIVERATED CONDITIONAL
Verified linkstrans-isa.comFMCSA SAFER

Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 30.7%24-mo cumulative
050%nat'l 22.26%
Driver OOS 1.9%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 101 vehicle and 106 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

37.9% · latest 6-mo window▼ Falling

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending down 10.1 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

104 inspections in the charted months · busiest month Feb '26 · 10

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Heavily inspected
Under-inspected
Expected
Well-monitored
Heavily inspected
≈10.6 / unit·yr
thin signalabundant signal
Among the more heavily-inspected carriers for its size — abundant roadside signal. Coverage isn't the question here; the out-of-service and crash record is.
Registered power units
5
Inspections · 24 mo
106
Annualized
≈53 / yr
Coverage
≈10.6 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

22%
Unsafe Driving
Vektor peer est.
Hours-of-Service
0violations
clean · per-BASIC
67%
Driver Fitness
Vektor peer est.
Controlled Substances
0violations
clean · per-BASIC
96%
Vehicle Maintenance
Vektor peer est.

Percentile = standing among same-exposure peers (higher = worse). FMCSA publishes percentiles for only some carriers (shown official); elsewhere we show a Vektor peer-percentile estimate, or the absolute SMS measure when there are too few inspections to rank.

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

  • 393.9 Inoperative required lampsVehicle Maintenance140 · 22 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance79 · 25 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance70 · 6 OOS
  • 396.5 Oil and/or grease leakVehicle Maintenance58 · 1 OOS
  • 393.78 Windshield wipersVehicle Maintenance55 · 0 OOS
  • 393.55 Antilock brake system (ABS)Vehicle Maintenance44 · 0 OOS
  • 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance39 · 17 OOS
  • 393.11 Required lamps/reflectors missingVehicle Maintenance38 · 1 OOS
  • 393.47 Brake actuators / linings / componentsVehicle Maintenance35 · 2 OOS
  • 393.209 Parts & accessories (vehicle condition)Vehicle Maintenance33 · 0 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 173 inspections — a clean logging history.

Crash history· 4 total · 0 in 24 mo

4
Total crashes
0
In last 24 mo
0
Fatal
2
Injury
YearCrashesFatalInjuryTow
20181001
20062022
20031001
DateStateFatalitiesInjuriesTow-away
Feb 2, 2018TX00Yes
Jul 3, 2006TX03Yes
Apr 28, 2006TX01Yes
May 2, 2003TX00Yes