Carrier profile · USDOT 53877 · Updated Jun 13, 2026

United Dairymen of Arizona

13 power unitsavg 5.6 yrLocal · 2 statesTEMPE, AZ87/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORYHAZMAT
Verified linksudaz.orgFMCSA 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 26.3%24-mo cumulative
050%nat'l 22.26%
Driver OOS 10.5%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 19 vehicle and 19 driver inspections over 24 months.

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

33.3% · 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 26.7 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

18 inspections in the charted months · busiest month Jun '26 · 4

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.

Expected band
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.7 / unit·yr
thin signalabundant signal
Roadside-inspection volume is about what you'd expect for a 13-unit fleet — enough signal to read the safety record, though not a heavy sample.
Registered power units
13
Inspections · 24 mo
19
Annualized
≈10 / yr
Coverage
≈0.7 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

Unsafe Driving
0violations
clean · per-BASIC
38%
Hours-of-Service
Vektor peer est.
53%
Driver Fitness
Vektor peer est.
Controlled Substances
0violations
clean · per-BASIC
25%
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.

  • 177.817 Other violationOther3 · 1 OOS
  • 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance2 · 1 OOS
  • 393.78 Windshield wipersVehicle Maintenance2 · 0 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance2 · 0 OOS
  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving2 · 0 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance2 · 0 OOS
  • 173.24 Other violationOther2 · 2 OOS
  • 177.848 Other violationOther1 · 1 OOS
  • 178.704 Other violationOther1 · 0 OOS
  • 383.23 Operating without a valid CDLDriver Fitness1 · 1 OOS

ELD & hours-of-service

1 hours-of-service / ELD violation on record · most recent Dec 26, 2025. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

0ELD device issues
0No log / no ELD
0False logs
0Drove over hours

Crash history· 10 total · 0 in 24 mo

10
Total crashes
0
In last 24 mo
0
Fatal
3
Injury
YearCrashesFatalInjuryTow
20231001
20221001
20173003
20151001
20051010
20041011
20031001
20011011
DateStateFatalitiesInjuriesTow-away
Dec 17, 2023AZ00Yes
Jul 28, 2022AZ00Yes
Aug 24, 2017AZ00Yes
Apr 11, 2017AZ00Yes
Apr 11, 2017AZ00Yes
Mar 25, 2015AZ00Yes
Oct 11, 2005AZ01No
Jun 23, 2004AZ01Yes
Nov 27, 2003AZ00Yes
Apr 5, 2001AZ01Yes