Carrier profile · USDOT 2271487 · MC-775710 · Updated Jun 19, 2026

Joseph Mcmahon Dairy Service Inc

DBA MCMAHON DAIRY SERVICE

37 power unitsRegional · 3 statesHUNTLEY, IL88/100
CARRIER ACTIVEMC-775710 ACTIVE

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 0.0%24-mo cumulative
050%nat'l 22.26%
Driver OOS 5.9%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 4 vehicle and 17 driver inspections over 24 months.

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

0.0% · latest 6-mo window● Steady

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

17 inspections in the charted months · busiest month Feb '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 37-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
37
Inspections · 24 mo
17
Annualized
9 / yr
Coverage
0.2 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

31%
Unsafe Driving
Vektor peer est.
30%
Hours-of-Service
Vektor peer est.
Driver Fitness
0violations
clean · per-BASIC
Controlled Substances
0violations
clean · per-BASIC
Vehicle Maintenance
4.75measure
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.

  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving13 · 0 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance6 · 0 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance2 · 0 OOS
  • 393.203 Parts & accessories (vehicle condition)Vehicle Maintenance2 · 0 OOS
  • 395.8 Record of duty status (log / ELD) not current or missingHOS Compliance2 · 1 OOS
  • 392.16 Failure to use seat beltUnsafe Driving1 · 0 OOS
  • 393.209 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 0 OOS
  • 392.9 Failure to secure load / cargo not securedUnsafe Driving1 · 0 OOS
  • 393.47 Brake actuators / linings / componentsVehicle Maintenance1 · 0 OOS
  • 393.50 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 0 OOS

ELD & hours-of-service

2 hours-of-service / ELD violations on record · most recent Dec 19, 2025. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

0ELD device issues
2No log / no ELD
0False logs
0Drove over hours

Crash history· 38 total · 3 in 24 mo

38
Total crashes
3
In last 24 mo
1
Fatal
10
Injury
YearCrashesFatalInjuryTow
20252002
20243003
20234124
20224014
20217046
20204024
20196006
20183003
20171010
20162002
20151001
20141001
DateStateFatalitiesInjuriesTow-away
Nov 26, 2025IL00Yes
Mar 25, 2025IL00Yes
Aug 30, 2024IL00Yes
Jun 18, 2024IL00Yes
Jan 15, 2024WI00Yes
Sep 28, 2023IL00Yes
Aug 27, 2023WI00Yes
Aug 25, 2023IL01Yes
Aug 8, 2023IL11Yes
Dec 23, 2022IL00Yes
Nov 28, 2022IL00Yes
Feb 22, 2022IL01Yes
Jan 7, 2022IL00Yes
Dec 3, 2021IL00Yes
Oct 5, 2021IL00Yes
Sep 10, 2021IL00Yes
Feb 10, 2021IL02Yes
Feb 9, 2021IL01Yes
Feb 5, 2021IL01No
Jan 12, 2021IL01Yes
Jun 17, 2020WI04Yes
May 14, 2020IL01Yes
Apr 25, 2020IL00Yes
Feb 24, 2020IL00Yes
Dec 31, 2019IL00Yes