CSA
UnknownUSDOT 7754· CARRIER· EIN 42267026
⬇ PDF report

UNITED SHELLFISH INC

407 N KENT NARROWS WAY, GRASONVILLE, MD, 21638(410) 827-8171mzador@unitedshellfish.comMARK ZADOR
Vetting snapshot
Authority
Unknown
per SAFER
Insurance
No active filing
not required
Vehicle OOS
1.8%
below 22% national avg
Driver OOS
8.5%
above 6.7% national avg
Crashes 24mo
3
none fatal
Red flags
None
nothing flagged
79
/ 100

Risk factors

Moderate riskVioCodes score
Driver OOS 8.5% — above the 6.7% national average3 crashes in the last 24 months

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.

Vehicle56 inspections · 1.8% OOS · National 22%
Driver59 inspections · 8.5% OOS · National 6.7%

CSA performance breakdown

FMCSA · Sep 2026

59 inspections · 34 violations (2 OOS) · 7% of inspections had an OOS finding.

59
Inspections
34
Violations
2
OOS violations
10
Distinct codes

Violations by BASIC

click to filter codes

16
total

Most inspected in · top 3 states

  • MD27
  • DC2
  • DE1

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.

Driver out-of-service rate exceeds the national average

High impact

Driver OOS rate is 8.2% 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

A high share of violations are occurring in Wicomico County, MD

Medium impact

9 of 36 violations in the last 12 months (25%) came from inspections in Wicomico County, MD. That can mean tougher enforcement there or simply more of your miles run through it — either way it's worth a look.

What to do
  • Review the inspections from Wicomico County, MD to spot recurring issues
  • Brief drivers running that lane; consider rerouting around the toughest enforcement corridors where practical

Following / lane / reckless violations are the leading contributor to Unsafe Driving

Low impact

Estimated Unsafe Driving percentile of 57% is under the 65% line. In decent shape, but here's what's driving it.

What’s contributing13 violations (24 mo)
Following / lane / reckless8 viol47%
  • 392.2-SLLTCDState/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other7× · 45%
  • 392.2-SLLLRState/Local Laws - Lane restriction violation1× · 2%
Speeding4 viol44%
  • 392.2-SLLS3State/Local Laws - Speeding 11-14 miles per hour over the speed limit3× · 38%
  • 392.2-SLLS2State/Local Laws - Speeding 6-10 miles per hour over the speed limit1× · 5%
Seat belt1 viol10%
  • 392.16-DDriver - Failed to use seat belt while operating a CMV1× · 10%
What to do
  • Defensive-driving refresher on following distance and lane discipline
Projected estimatecould improve up to 24 pts in ~12 mo
nowin 12 months
Current trend 50% followed 100% followed 65% line

Drugs / alcohol violations are the leading contributor to Controlled Substances/Alcohol

Low impact

Estimated Controlled Substances/Alcohol percentile of 6% is under the 80% line. In decent shape, but here's what's driving it.

What’s contributing1 violations · 1 OOS (24 mo)
Drugs / alcohol1 OOS1 viol100%
  • 392.5A2-IPIntoxicating - No driver shall use alcohol, be under the influence of alcohol, or have any measured alcohol concentration or detected presence of alcohol, while o1× · 100%
What to do
  • Reinforce the testing program and zero-tolerance policy
  • Prioritize the out-of-service items — they carry the heaviest weight
Projected estimatecould improve up to 4 pts in ~12 mo
nowin 12 months
Current trend 50% followed 100% followed 80% line

Lighting / lamps violations are the leading contributor to Vehicle Maintenance

Low impact

Estimated Vehicle Maintenance percentile of 30% is under the 80% line. In decent shape, but here's what's driving it.

What’s contributing31 violations (24 mo)
Lighting / lamps20 viol70%
  • 393.9A-LFTSILighting - Front - Turn signal - inoperative5× · 24%
  • 393.9A-LHWSLighting - Hazard warning signal(s) inoperative4× · 20%
  • 393.9A-HLLHLighting - Headlamp(s) fail to operate on low and high beam1× · 7%
Tires3 viol15%
Inspection / repair / DVIR3 viol9%
  • 396.17C-PIOperating a CMV without documentation of a periodic inspection3× · 9%
Other5 viol7%
  • 393.203A-CBPCab and Body Parts - Door missing/broken2× · 3%
  • 393.203C-CBPCab and Body Parts - Hood not securely fastened1× · 1%
  • 393.78A-WSWashers - Inoperative washing system.1× · 1%
What to do
  • Walk the lights every pre-trip and carry spare bulbs/fuses; clean lenses and check the trailer plug
Projected estimatecould improve up to 22 pts in ~12 mo
nowin 12 months
Current trend 50% followed 100% followed 80% line

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.

Holding steady
6
Inspections
9
Violations
0
Out-of-service
3
Clean
Where the violations are
Other 56%Unsafe Driving 22%Vehicle Maintenance 22%
Focus here first
1Other
5 violations · 56% of recent
  • 392.2-SLLSR×3State/Local Laws - State registration/tag violation
  • 390.21TB2-DOTOperate a CMV without USDOT number displayed. Must be preceded by the letters USDOT
  • 393.95FEmergency Equipment - Stopped vehicle warning devices missing or improper
Do this
  • Review these violations with drivers and add the fix to your pre-trip and PM routine
2Unsafe Driving
2 violations · 22% of recent
  • 392.2-SLLS3State/Local Laws - Speeding 11-14 miles per hour over the speed limit
  • 392.2-SLLTCDState/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other
Do this
  • Coach speed and following distance — Unsafe Driving points are weighted heavily
  • Hands off the phone; always belt up
3Vehicle Maintenance
2 violations · 22% of recent
  • 393.9A-LILLighting - Identification lamp(s) inoperative
  • 393.9A-LCLLighting - Clearance lamp(s) inoperative
Do this
  • Walk the lights every pre-trip and carry spare bulbs/fuses
  • Clean lenses and check the trailer plug for corrosion
Repeat offenders (same code, multiple times)
🎓
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).

100
Inspections
117
Violations
15
Out-of-service
474
CSA points
18
Crashes
6
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

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

26 incomplete vehicle
2020 FREIGHTLINER M2seen 8×
3ALACWFB5LDLZ9429· 1EB5943 MD
2020 FREIGHTLINER M2seen 5×
3ALACWFB3LDLZ9428· 1EB5942 MD
2020 FREIGHTLINER M2seen 4×
3ALACWFB7LDLZ9433· 1ED6354 MD
2020 FREIGHTLINER M2seen 4×
3ALACWFB1LDLZ9427· 1EB5941 MD
2025 CHEVROLET 5500XDseen 4×
JALEEW16XS7P01313· 6GK5859 MD
2025 CHEVROLET 5500XDseen 4×
JALEEW169S7P01366· 6GK5813 MD
2020 FREIGHTLINER M2seen 4×
3ALACWFB0LDLZ9435· 1EB5970 MD
2020 FREIGHTLINER M2seen 3×
3ALACWFB2LDLZ9436· 1ED6358 MD
2020 FREIGHTLINER M2seen 3×
3ALACWFB3LDLZ9431· 1ED6359 MD
2020 FREIGHTLINER M2seen 2×
3ALACWFB9LDLZ9434· 1ED6362 MD
2024 CHEVROLET 4500XDseen 2×
JALCDW16XR7K02080· 4GC3617 MD
2020 FREIGHTLINER M2seen 2×
3ALACWFB5LDLZ9432· 1EB5944 MD
2017 ISUZU NPR-XDseen 2×
JALC4W164H7K00209· 7EZ2062 MD
2019 HINO XJC710 / XFC710
JHHHDM2H4KK003912· 7DP9707 MD
2025 FREIGHTLINER M2
1FVACWFC3SHVT7731· 3780555 IN
2024 CHEVROLET 4500XD
JALCDW164R7K01765· 22915AR VA
2018 ISUZU NPR-XD
JALC4W166J7K00380· 4ET1043 MD
2024 CHEVROLET 4500XD
JALCDW16XR7K03052· 5GL3211 MD
2019 CHEVROLET 4500XD
JALCDW163K7K01732· 22273RA VA
2020 CHEVROLET 4500XD
JALCDW163L7K00503· W76497 MA
2018 ISUZU NPR-XD
JALC4W160J7K01072· 7DL8700 MD
2020 FREIGHTLINER M2
3ALACWFBXLDLZ9426· 1EB5940 MD
2020 CHEVROLET 4500XD
JALCDW169L7K00148· 5DW5972 MD
2024 CHEVROLET 4500XD
JALCDW163R7K02874· 6GK5833 MD
2024 CHEVROLET 4500XD
JALCDW16XR7K00667· 22917RA MD
2024 CHEVROLET 4500XD
JALCDW165R7K00589· 6GA7008 MD

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.

Crash record (US, last 24 months)

Total

3

Tow-away

3

Injury

1

Fatal

0

Company profile

FMCSA census

PRIVATE PROPERTY

Power units
23
on file (MCS-150)
Drivers
23
5 hold a CDL
Annual mileage
1.6M mi
reported 2024
Recordable crash rate
per million miles
How far they run · drivers by operating lane
  • Interstate · <100 mi8 drivers
  • Intrastate · <100 mi15 drivers
Company officer
MARK ZADOR
Operation
Interstate
D-U-N-S
22603096
Registered since
1974-06-01
Last MCS-150 update
2025-06-17
Census status
Active

Fleet: 23 trucks · 1 owned tractors.

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

Connections

carrier graph

This carrier shares VINs with 9 other carriers — review the connections below as part of your vetting.

9
Connected carriers
9
Fleet-transfer links
2
Most shared VINs
0
Strong links
Medium· 1
COMMONWEALTH JOE LLC
USDOT 3404474Active· BELTSVILLE, MD
Medium
Shared VIN · 2
JALCDW165R7K00589JALCDW164R7K01765

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. 06/17/2025MCS-150 update filed

    1.6M mi reported (2024)

  2. 06/01/1974Registered with FMCSA

    PRIVATE PROPERTY

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

🚛

Operations

Classification

  • PRIVATE PROPERTY

Area served

  • Interstate

FMCSA safety rating

Rating
Satisfactory
Type
Compliance review
Rated
1991-08-20
Last review
1991-05-20
📄

MCS-150 registration

Form date
2025-06-17
Reported mileage
1,550,000 mi (2024)

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Data sourced from public FMCSA records via safer.fmcsa.dot.gov · Latest FMCSA update: Sep 2026 · Page refreshed: Sep 21, 2026, 9:46 AM. VioCodes is not affiliated with FMCSA. To dispute incorrect data, file a DataQs Request for Data Review.