Carrier profile · USDOT 819592 · Updated Jun 13, 2026

KOLB GRADING LLC

23 power unitsavg 10.8 yrRegional · 5 statesWELDON SPRING, MO87/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORYHAZMAT
Verified linkskolbgrading.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 33.3%24-mo cumulative
050%nat'l 22.26%
Driver OOS 11.1%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 6 vehicle and 9 driver inspections over 24 months.

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

40.0% · 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 13.3 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

9 inspections in the charted months · busiest month Nov '25 · 2

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 23-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
23
Inspections · 24 mo
9
Annualized
≈5 / yr
Coverage
≈0.2 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

13%
Unsafe Driving
Vektor peer est.
Hours-of-Service
0violations
clean · per-BASIC
50%
Driver Fitness
Vektor peer est.
Controlled Substances
0violations
clean · per-BASIC
Vehicle Maintenance
8.88measure
SMS · per-BASIC

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.

  • 393.100 Cargo securement (general)Vehicle Maintenance4 · 4 OOS
  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving3 · 0 OOS
  • 392.16 Failure to use seat beltUnsafe Driving2 · 0 OOS
  • 393.9 Inoperative required lampsVehicle Maintenance2 · 1 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance2 · 0 OOS
  • 396.17 Periodic (annual) inspectionVehicle Maintenance1 · 0 OOS
  • 177.834 Other violationOther1 · 1 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance1 · 0 OOS
  • 390.21 USDOT number marking on vehicleUnsafe Driving1 · 0 OOS
  • 391.11 Driver not qualifiedDriver Fitness1 · 1 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 13 inspections — a clean logging history.

Crash history· 11 total · 0 in 24 mo

11
Total crashes
0
In last 24 mo
0
Fatal
2
Injury
YearCrashesFatalInjuryTow
20231001
20211001
20182012
20153013
20141001
20121001
20091001
20031001
DateStateFatalitiesInjuriesTow-away
Sep 18, 2023MO00Yes
Oct 6, 2021MO00Yes
Jul 12, 2018MO01Yes
Jun 5, 2018OK00Yes
Apr 20, 2015MO01Yes
Feb 20, 2015MO00Yes
Jan 13, 2015IN00Yes
Dec 19, 2014MO00Yes
Apr 18, 2012MO00Yes
Oct 22, 2009MO00Yes
Nov 10, 2003MO00Yes