Carrier profile · USDOT 1829 · Updated Jun 13, 2026

Sukup Manufacturing Company

68 power unitsavg 7.8 yrMulti-region · 8 statesSHEFFIELD, IA81/100
AUTHORITY STATUS UNKNOWNRATED CONDITIONAL
Verified linkssukup.comFMCSA 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 33.3%24-mo cumulative
050%nat'l 22.26%
Driver OOS 0.0%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 9 vehicle and 24 driver inspections over 24 months.

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

33.3% · 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 2.1 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

24 inspections in the charted months · busiest month Oct '24 · 3

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 68-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
68
Inspections · 24 mo
24
Annualized
≈12 / yr
Coverage
≈0.2 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

30%
Unsafe Driving
Vektor peer est.
Hours-of-Service
0violations
clean · per-BASIC
Driver Fitness
0violations
clean · per-BASIC
Controlled Substances
0violations
clean · per-BASIC
36%
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.

  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving16 · 0 OOS
  • 392.9 Failure to secure load / cargo not securedUnsafe Driving2 · 2 OOS
  • 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance2 · 2 OOS
  • 396.17 Periodic (annual) inspectionVehicle Maintenance2 · 0 OOS
  • 393.11 Required lamps/reflectors missingVehicle Maintenance1 · 0 OOS
  • 393.43 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 1 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 39 inspections — a clean logging history.

Crash history· 22 total · 4 in 24 mo

22
Total crashes
4
In last 24 mo
1
Fatal
7
Injury
YearCrashesFatalInjuryTow
20252022
20243003
20232002
20221011
20181011
20164024
20122002
20081001
20072002
20041001
20022112
19981001
DateStateFatalitiesInjuriesTow-away
Sep 16, 2025IL01Yes
Mar 10, 2025MI01Yes
Nov 25, 2024MN00Yes
Sep 11, 2024IA00Yes
May 3, 2024IA00Yes
May 2, 2023AR00Yes
Apr 10, 2023IL00Yes
Jun 2, 2022MO01Yes
Sep 13, 2018WI01Yes
Dec 11, 2016MO00Yes
May 16, 2016MO02Yes
Apr 4, 2016IA00Yes
Jan 11, 2016IA02Yes
Nov 9, 2012SD00Yes
Feb 20, 2012SD00Yes
Jun 17, 2008IN00Yes
Aug 27, 2007KY00Yes
Jul 19, 2007MN00Yes
Feb 20, 2004IA00Yes
Nov 12, 2002IA01Yes
Sep 7, 2002IA10Yes
Jun 3, 1998MO00Yes