Carrier profile · USDOT 50146 · Updated Jun 21, 2026

Hill Brothers Chemical Company

47 power unitsavg 10.6 yrRegional · 4 statesPHOENIX, AZ94/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORYHAZMAT
Verified linkshillbrothers.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 5.9%24-mo cumulative
050%nat'l 22.26%
Driver OOS 1.2%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 84 vehicle and 86 driver inspections over 24 months.

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

0.0% · 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 7.2 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

86 inspections in the charted months · busiest month Jun '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.

Well-monitored
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.9 / unit·yr
thin signalabundant signal
Within the expected band for a 47-unit fleet — FMCSA has inspected this carrier often enough that the out-of-service and violation signals above are statistically trustworthy.
Registered power units
47
Inspections · 24 mo
88
Annualized
≈44 / yr
Coverage
≈0.9 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

11%
Unsafe Driving
Vektor peer est.
8%
Hours-of-Service
Vektor peer est.
Driver Fitness
.18measure
SMS · per-BASIC
Controlled Substances
0violations
clean · per-BASIC
16%
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.

  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving17 · 1 OOS
  • 393.9 Inoperative required lampsVehicle Maintenance12 · 4 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance7 · 3 OOS
  • 393.43 Parts & accessories (vehicle condition)Vehicle Maintenance4 · 0 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance3 · 2 OOS
  • 393.201 Parts & accessories (vehicle condition)Vehicle Maintenance2 · 0 OOS
  • 393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance2 · 0 OOS
  • 395.24 ELD — record edits / dataHOS Compliance2 · 0 OOS
  • 396.5 Oil and/or grease leakVehicle Maintenance2 · 0 OOS
  • 396.9 Inspection of motor vehicles in operationVehicle Maintenance2 · 0 OOS

ELD & hours-of-service

4 hours-of-service / ELD violations on record · most recent Apr 16, 2026. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

4ELD device issues
0No log / no ELD
0False logs
0Drove over hours

Trending worse — 100% of ELD violations are in the last 24 months.

Crash history· 13 total · 2 in 24 mo

13
Total crashes
2
In last 24 mo
0
Fatal
5
Injury
YearCrashesFatalInjuryTow
20252022
20203013
20172002
20131001
20051001
20031001
20021011
20011001
19961010
DateStateFatalitiesInjuriesTow-away
Aug 13, 2025AZ02Yes
Jul 18, 2025CA01Yes
Dec 28, 2020CA00Yes
Apr 6, 2020AZ00Yes
Jan 29, 2020CA01Yes
Jul 19, 2017AZ00Yes
Jul 13, 2017CA00Yes
Jul 19, 2013CA00Yes
Sep 13, 2005CA00Yes
May 23, 2003AZ00Yes
Dec 12, 2002AZ01Yes
Oct 25, 2001AZ00Yes
Oct 3, 1996ID01No