Carrier profile · USDOT 2284804 · Updated Aug 9, 2026

S B Cox Ready Mix Inc

84 power unitsavg 11.5 yrLocal · 1 statesROCKVILLE, VA74/100
AUTHORITY STATUS UNKNOWN
Verified linkscoxreadymix.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 44.4%24-mo cumulative
050%nat'l 22.26%
Driver OOS 10.7%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 9 vehicle and 28 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 65.0 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

27 inspections in the charted months · busiest month Jun '26 · 5

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.

Thin coverage
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.2 / unit·yr
thin signalabundant signal
Few roadside inspections for a 84-unit fleet — the out-of-service and violation signals above rest on a small sample, so weight them cautiously. Thin coverage on a young authority is itself a flag.
Registered power units
84
Inspections · 24 mo
28
Annualized
≈14 / yr
Coverage
≈0.2 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

4%
Unsafe Driving
Vektor peer est.
Hours-of-Service
0violations
clean · per-BASIC
47%
Driver Fitness
Vektor peer est.
Controlled Substances
0violations
clean · per-BASIC
49%
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 Driving21 · 0 OOS
  • 393.9 Inoperative required lampsVehicle Maintenance7 · 1 OOS
  • 393.55 Antilock brake system (ABS)Vehicle Maintenance5 · 0 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance5 · 2 OOS
  • 393.47 Brake actuators / linings / componentsVehicle Maintenance4 · 0 OOS
  • 391.11 Driver not qualifiedDriver Fitness4 · 4 OOS
  • 393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance4 · 0 OOS
  • 392.16 Failure to use seat beltUnsafe Driving3 · 0 OOS
  • 390.21 USDOT number marking on vehicleUnsafe Driving3 · 0 OOS
  • 393.53 Automatic brake adjusters / indicatorsVehicle Maintenance2 · 0 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 44 inspections — a clean logging history.

Crash history· 42 total · 5 in 24 mo

42
Total crashes
5
In last 24 mo
0
Fatal
22
Injury
YearCrashesFatalInjuryTow
20262012
20252022
20244014
20233023
20226036
20217057
20195025
20182002
20174024
20163013
20141001
20133033
DateStateFatalitiesInjuriesTow-away
Jun 22, 2026VA01Yes
Jun 4, 2026VA00Yes
Nov 4, 2025VA01Yes
Oct 15, 2025VA01Yes
Sep 18, 2024VA00Yes
Aug 7, 2024VA00Yes
Jul 24, 2024VA00Yes
Mar 15, 2024VA01Yes
Aug 3, 2023VA01Yes
Jun 7, 2023VA00Yes
May 26, 2023VA01Yes
Aug 9, 2022VA00Yes
Jul 18, 2022VA00Yes
Jun 10, 2022VA01Yes
Apr 21, 2022VA01Yes
Mar 15, 2022VA01Yes
Jan 17, 2022VA00Yes
Nov 15, 2021VA01Yes
Aug 5, 2021VA01Yes
Jul 8, 2021VA01Yes
Jun 29, 2021VA00Yes
Apr 7, 2021VA06Yes
Mar 11, 2021VA00Yes
Jan 30, 2021VA01Yes
Aug 29, 2019VA00Yes