Carrier profile · USDOT 491637 · MC-240905 · Updated Jul 18, 2026

Diamond Trucking Inc

DBA DIAMOND TRUCKING

76 power unitsavg 12.9 yrMulti-region · 8 statesPHOENIX, AZ88/100
CARRIER ACTIVEMC-240905 ACTIVERATED SATISFACTORYHAZMAT
Verified linksdiamondtrucking.netFMCSA 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 1.4%24-mo cumulative
050%nat'l 22.26%
Driver OOS 0.0%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 143 vehicle and 148 driver inspections over 24 months.

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

0.0% · latest 6-mo window▲ Rising

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending up 1.5 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

144 inspections in the charted months · busiest month Jun '25 · 16

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
≈1.0 / unit·yr
thin signalabundant signal
Within the expected band for a 76-unit fleet — FMCSA has inspected this carrier often enough that the out-of-service and violation signals above are statistically trustworthy.
Registered power units
76
Inspections · 24 mo
148
Annualized
≈74 / yr
Coverage
≈1.0 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

27%
Unsafe Driving
Vektor peer est.
9%
Hours-of-Service
Vektor peer est.
Driver Fitness
0violations
clean · per-BASIC
Controlled Substances
0violations
clean · per-BASIC
7%
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 Driving20 · 0 OOS
  • 393.55 Antilock brake system (ABS)Vehicle Maintenance6 · 0 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance5 · 0 OOS
  • 393.201 Parts & accessories (vehicle condition)Vehicle Maintenance4 · 0 OOS
  • 393.78 Windshield wipersVehicle Maintenance4 · 0 OOS
  • 395.24 ELD — record edits / dataHOS Compliance4 · 0 OOS
  • 395.30 ELD — use / data transferHOS Compliance4 · 0 OOS
  • 393.11 Required lamps/reflectors missingVehicle Maintenance3 · 0 OOS
  • 393.47 Brake actuators / linings / componentsVehicle Maintenance3 · 0 OOS
  • 180.415 Other violationOther3 · 0 OOS

ELD & hours-of-service

10 hours-of-service / ELD violations on record · most recent Oct 16, 2025. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

9ELD device issues
0No log / no ELD
0False logs
1Drove over hours

3 ELD violations in the last 24 months.

Crash history· 35 total · 7 in 24 mo

35
Total crashes
7
In last 24 mo
1
Fatal
5
Injury
YearCrashesFatalInjuryTow
20262012
20252002
20245025
20233003
20222002
20202002
20193003
20183003
20175104
20164004
20062022
20041001
20021001
DateStateFatalitiesInjuriesTow-away
May 24, 2026AZ00Yes
May 19, 2026AZ01Yes
Jun 28, 2025AZ00Yes
May 4, 2025AZ00Yes
Sep 22, 2024AZ00Yes
Sep 5, 2024AZ00Yes
Aug 24, 2024AZ00Yes
Jun 25, 2024AZ02Yes
Jun 14, 2024AZ01Yes
Oct 27, 2023AZ00Yes
Sep 25, 2023AZ00Yes
Jul 26, 2023AZ00Yes
Nov 30, 2022AZ00Yes
Feb 17, 2022AZ00Yes
Jul 3, 2020AZ00Yes
Feb 24, 2020AZ00Yes
Sep 16, 2019AZ00Yes
Aug 31, 2019AZ00Yes
Feb 28, 2019AZ00Yes
Nov 23, 2018AZ00Yes
Sep 21, 2018AZ00Yes
Feb 3, 2018AZ00Yes
Dec 5, 2017AZ00Yes
Sep 2, 2017AZ00Yes
Mar 30, 2017AZ00Yes