Carrier profile · USDOT 819251 · MC-436570 · Updated Aug 20, 2026

Mark Walker

DBA MARK WALKER TRUCKING

13 power unitsavg 9.4 yrRegional · 7 statesTAHLEQUAH, OK80/100
CARRIER ACTIVEMC-436570 ACTIVERATED CONDITIONALHAZMAT
Verified linksFMCSA 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 46.4%24-mo cumulative
050%nat'l 22.26%
Driver OOS 2.8%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 28 vehicle and 36 driver inspections over 24 months.

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

71.4% · 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 8.7 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

35 inspections in the charted months · busiest month May '25 · 6

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
≈1.4 / unit·yr
thin signalabundant signal
Within the expected band for a 13-unit fleet — FMCSA has inspected this carrier often enough that the out-of-service and violation signals above are statistically trustworthy.
Registered power units
13
Inspections · 24 mo
36
Annualized
≈18 / yr
Coverage
≈1.4 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

71%
Unsafe Driving
Vektor peer est.
45%
Hours-of-Service
Vektor peer est.
Driver Fitness
0violations
clean · per-BASIC
Controlled Substances
0violations
clean · per-BASIC
96%
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.

  • 393.9 Inoperative required lampsVehicle Maintenance44 · 6 OOS
  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving19 · 0 OOS
  • 393.60 Windshield / glazingVehicle Maintenance15 · 0 OOS
  • 393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance13 · 0 OOS
  • 393.47 Brake actuators / linings / componentsVehicle Maintenance11 · 0 OOS
  • 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance10 · 6 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance9 · 6 OOS
  • 395.8 Record of duty status (log / ELD) not current or missingHOS Compliance9 · 0 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance7 · 0 OOS
  • 393.78 Windshield wipersVehicle Maintenance7 · 0 OOS

ELD & hours-of-service

9 hours-of-service / ELD violations on record · most recent May 28, 2026. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

0ELD device issues
3No log / no ELD
0False logs
0Drove over hours

Crash history· 9 total · 2 in 24 mo

9
Total crashes
2
In last 24 mo
0
Fatal
8
Injury
YearCrashesFatalInjuryTow
20252022
20231001
20221011
20202022
20151011
20101011
19991010
DateStateFatalitiesInjuriesTow-away
Aug 4, 2025OK01Yes
Aug 4, 2025OK01Yes
Oct 25, 2023AR00Yes
Aug 30, 2022AR01Yes
Nov 5, 2020OK01Yes
Nov 5, 2020OK01Yes
Dec 4, 2015OK01Yes
Apr 2, 2010OK01Yes
Oct 27, 1999OK01No