Carrier profile · USDOT 507534 · MC-480212 · Updated Jun 13, 2026

J Masson Trucking LLC

4 power unitsLocal · 1 statesIRONDALE, MO50/100

CARRIER ACTIVEMC-480212 ACTIVERATED CONDITIONAL

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

Vehicle OOS 50.0%24-mo cumulative

050%

Driver OOS 0.0%24-mo cumulative

030%

Every inspection in the window pooled — 2 vehicle and 2 driver inspections over 24 months.

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

33.3% · latest 6-mo window

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. One window of data — no trend yet. 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

No roadside inspections on the FMCSA record in this window

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

≈0.3 / unit·yr

thin signalabundant signal

Few roadside inspections for a 4-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: 4
Inspections · 24 mo: 2
Annualized: ≈1 / yr
Coverage: ≈0.3 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

Unsafe Driving

2.5measure

SMS · per-BASIC

Hours-of-Service

0violations

clean · per-BASIC

Driver Fitness

.5measure

SMS · per-BASIC

Controlled Substances

0violations

clean · per-BASIC

Vehicle Maintenance

9.5measure

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.

393.75 Tires (defective / underinflated / worn)Vehicle Maintenance3 · 2 OOS
393.9 Inoperative required lampsVehicle Maintenance3 · 0 OOS
392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving3 · 0 OOS
393.60 Windshield / glazingVehicle Maintenance2 · 0 OOS
390.21 USDOT number marking on vehicleUnsafe Driving1 · 0 OOS
391.41 No / expired medical certificateDriver Fitness1 · 0 OOS
396.5 Oil and/or grease leakVehicle Maintenance1 · 0 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 3 inspections — a clean logging history.

Crash history· 17 total · 0 in 24 mo

Total crashes

In last 24 mo

Fatal

Injury

Year	Crashes	Fatal	Injury	Tow
2024	1	0	1	1
2021	1	0	1	1
2019	1	0	1	1
2018	1	0	0	1
2017	3	0	2	3
2006	1	0	1	1
2004	1	0	1	1
2003	3	0	2	3
2001	1	0	1	1
2000	1	0	0	1
1999	2	1	0	2
1998	1	0	1	1

Date	State	Fatalities	Injuries	Tow-away
Jul 30, 2024	MO	0	1	Yes
Aug 19, 2021	MO	0	1	Yes
Sep 30, 2019	MO	0	1	Yes
May 22, 2018	MO	0	0	Yes
Jun 5, 2017	MO	0	1	Yes
Jun 5, 2017	MO	0	1	Yes
May 10, 2017	MO	0	0	Yes
May 9, 2006	MO	0	1	Yes
Apr 8, 2004	MO	0	1	Yes
Aug 27, 2003	MO	0	0	Yes
Aug 12, 2003	MO	0	3	Yes
Jun 25, 2003	MO	0	1	Yes
Jul 30, 2001	MO	0	1	Yes
Aug 18, 2000	MO	0	0	Yes
Dec 14, 1999	MO	1	0	Yes
Nov 10, 1999	MO	0	0	Yes
Jun 17, 1998	MO	0	1	Yes