CSA
UnknownUSDOT 2974947· CARRIER
⬇ PDF report

MASON & MACHINE LLC

106 WOODHAVEN DR, GREENVILLE, SC, 29609-6629(860) 815-0728jrmason@clemson.eduJOHN MASON
Vetting snapshot
Authority
Unknown
per SAFER
Insurance
No active filing
not required
Vehicle OOS
—
no inspections
Driver OOS
—
no inspections
Crashes 24mo
0
clean
Red flags
1 flag
see details below
80
/ 100

Risk factors

Low riskVioCodes score
Possible reincarnation pattern — tied to an older inactive carrier

A weighted read of the public FMCSA signals below — authority, insurance, out-of-service, crashes, roadside OOS rates, and carrier connections. A starting point for vetting, not a guarantee.

Roadside inspection performance

Out-of-service rate vs national average. Lower is better.

Vehicle0 inspections · 0% OOS · National 22%
Driver0 inspections · 0% OOS · National 6.7%

CSA performance breakdown

FMCSA · August 28, 2026

4 inspections · 10 violations (4 OOS) · 50% of inspections had an OOS finding.

4
Inspections
10
Violations
4
OOS violations
9
Distinct codes

Violations by BASIC

click to filter codes

10
total

Most inspected in · top 1 states

  • SC4

Latest FMCSA SMS snapshot. Codes link to the lookup — severity weighting, contest angles, and the DataQs Drafter for each. Click a BASIC to filter the codes.

Recommendations

What’s driving each score, what to do about it, and where it could go.

Vehicle and driver out-of-service rate exceeds the national average

High impact

Vehicle OOS rate is 50% vs the 22% national average. Driver OOS rate is 25% vs the 6.7% national average. Carriers above the national OOS average draw more enforcement attention (audits, roadside stops) and can see higher insurance premiums.

What to do
  • Review recent inspections with out-of-service violations and fix the root causes with equipment and drivers
  • Run a preventative-maintenance program; periodically inspect tires, brakes and lights
  • Reinforce thorough pre-trip and post-trip inspections; retrain where needed

Recommendations are generated from the carrier’s public FMCSA roadside-inspection record. Percentiles and projections are VioCodes estimates, not official FMCSA figures. Informational, not legal advice.

90-day safety improvement plan

What this carrier has struggled with most in the last 90 days — where to focus now.

2
Inspections
1
Violations
1
Out-of-service
1
Clean
Where the violations are
Other 100%
Focus here first
1Other
1 violation · 1 OOS · 100% of recent
  • 391.11B4-CLHAMedical (Certificate) - Operating a commercial vehicle without corrective lenses or hearing aid as indicated on the driver's medical certificate · OOS
Do this
  • Track CDL, medical card, and endorsement expirations ahead of time
  • Keep the DQ file complete and the medical card on the driver
🎓
Turn these into driver coaching — and prove it
FleetTrained (my companion project) makes branded, multilingual training videos for these exact violations — your driver watches and gets a completion certificate for the file.

Based on roadside inspections in the last 90 days, ranked by what recurs most. Informational, not legal advice.

Inspection & crash map

live · FMCSA MCMIS

Every inspection and crash on record — hover a point for the summary, click for full detail (codes, severity, CSA points).

4
Inspections
14
Violations
5
Out-of-service
37
CSA points
0
Crashes
1
States
cleanviolOOS

CSA points = violation severity weight × FMCSA time weight (3× in the last 6 months, 2× at 6–12, 1× at 12–24). Points are spread within each state — FMCSA records the inspection state, not an exact location. Source: FMCSA MCMIS.

Equipment

VINs via NHTSA

2 distinct vehicles seen in this carrier’s roadside inspections.

2 incomplete vehicle
2007 KENWORTH T8 Seriesseen 3×
1NKDXBEX97J166308· P888797 SC
2027 KENWORTH T880
1NKZX4EX1VJ247463· P931785 SC

Equipment is inferred from VINs recorded on roadside inspections (FMCSA MCMIS), decoded via the NHTSA vPIC API — it reflects vehicles inspected, not a current fleet roster.

Company profile

FMCSA census

AUTHORIZED FOR HIRE

Power units
1
on file (MCS-150)
Drivers
1
1 hold a CDL
Annual mileage
—
reported 0
Recordable crash rate
—
per million miles
How far they run · drivers by operating lane
  • Interstate · <100 mi1 drivers
Company officer
JOHN MASON
Operation
Intrastate (Non-Hazmat)
Registered since
2017-02-14
Last MCS-150 update
2017-02-14
Census status
Active

Fleet: 1 trucks.

Source: FMCSA Company Census File (data.transportation.gov). Fleet and driver counts are self-reported on the carrier’s most recent MCS-150 filing.

Data change history

Every FMCSA record change we’ve detected — address, fleet size, contacts, MCS-150 — newest first.

Connections

carrier graph

This carrier shares officers with 13 other carriers — review the connections below as part of your vetting.

13
Connected carriers
0
Fleet-transfer links
0
Most shared VINs
13
Strong links
Possible reincarnation pattern: ALLEY CAT VENTURES LLC (USDOT 2792426, registered 2015) is inactive, shares this carrier’s officer, and predates it — worth checking whether this carrier re-registered to shed a prior record.
Strong· 13
1
ALLEY CAT VENTURES LLC
USDOT 2792426Inactive· WASHOE VALLEY, NV
Strong
Officer
2
GREAT WESTERN TRANSPORT OF COLORADO INC
USDOT 900276Inactive· FORT COLLINS, CO
Strong
Officer
3
HIPPO TRUCKING LLC
USDOT 3489275Active· DENVER, CO
Strong
Officer
4
IRON DONKEY EQUIPMENT TRANSPORT LLC
USDOT 990294Active· GLENDALE, AZ
Strong
Officer
5
JOHN MASON
USDOT 3143248Active· PLEASANT VLY, NY
Strong
Officer
6
JOHN MASON
USDOT 1948167Inactive· BOLING, TX
Strong
Officer
7
JOHN MASON ENTERPRISES LLC
USDOT 1712105Inactive· CHAPEL HILL, NC
Strong
Officer
8
JOHN V MASON
USDOT 1241460Inactive· SUNNYSIDE, GA
Strong
Officer
9
Strong
Officer
10
MASON ENTERPRISES LLC
USDOT 2344267Active· W SUFFIELD, CT
Strong
Officer
11
MASON STEEL ERECTORS
USDOT 1382777Inactive· BYRDSTOWN, TN
Strong
Officer
12
MASONS LANDSCAPE CONTRACTORS INC
USDOT 1945458Inactive· HONEOYE FALLS, NY
Strong
Officer
13
SABRE OXIDATION TECHNOLOGIES
USDOT 851864Inactive· ODESSA, TX
Strong
Officer

This carrier’s phone is shared by many carriers (likely a dispatch/registration service), so phone links are omitted. Shared VINs come from FMCSA roadside-inspection records — a vehicle inspected under more than one carrier, often a fleet transfer or trailer interchange. Other links come from the FMCSA census. Shared identifiers are common and often legitimate — treat these as leads to investigate, not proof of wrongdoing.

Activity history

2 events
  1. 02/14/2017Registered with FMCSA

    AUTHORIZED FOR HIRE

  2. 02/14/2017MCS-150 update filed

Merged from FMCSA authority, insurance, out-of-service, and census records.

🚛

Operations

Classification

  • AUTHORIZED FOR HIRE

Area served

  • Intrastate (Non-Hazmat)
★

FMCSA safety rating

Rating
Not rated
Type
—
Rated
—
Last review
—
📄

MCS-150 registration

Form date
2017-02-14
Reported mileage
—
⚡

Got a violation you want to contest?

Use the free AI-powered DataQs Drafter to generate a polished challenge letter — quotes the relevant 49 CFR, predicts your grant chance.

Open the Drafter →
ⓘ
Data sourced from public FMCSA records via safer.fmcsa.dot.gov · Latest FMCSA update: Sep 2026 · Page refreshed: Sep 27, 2026, 11:42 AM. VioCodes is not affiliated with FMCSA. To dispute incorrect data, file a DataQs Request for Data Review.