Fleet typeIdentity
Small fleet
77 power units. Brokers price each fleet type apart.
Carrier profile · USDOT 1604546 · MC-593409
UNIMARK LOWBOY TRANSPORTATION LLC
77 power unitsavg 9.9 yrNational · 32 statesPLEASANT PRAIRIE, WI
CARRIER ACTIVEMC-593409 ACTIVEHAZMAT
Observed fleet · trailing 24 mo daily
77Power units
90 observed · MCS-150
53Trailers seen
Decoded · vPIC
9.9Avg age (yr)
1997–2026 · vPIC
Click to see how we scored it
Load decision · FMCSA snapshot · 2026-06-26
Clear to load
Active authority and a clean federal record. No blocking issues found.
Active operating authorityInsurance on fileFatal crash on record
In good standing · 4
Active operating authorityActive for-hire authority is on file with FMCSA.Insurance on fileBIPD (liability) insurance is on file with FMCSA.Established 19 yearsOperating authority has been on file since 2007.Out-of-service rates below national averageBoth vehicle and driver OOS rates beat the national benchmark across 202 inspections.
Operating authority1919 yr active
since 2007Insurance (BIPD)On file
FMCSA L&IVehicle OOS · 24mo16.016.0 %
▼ 22.26% nat'lCrashes · fatal55
15 in 24moVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersTypical
9.9 yr
Model years 1997–2026 · peer benchmark computing.
Identity stabilityStable
19 yr unchanged
Same registration since 2007 — no chameleon / reincarnation signal.
AI readFull read
Is UNIMARK LOWBOY TRANSPORTATION LLC safe to work with?
Is UNIMARK LOWBOY TRANSPORTATION LLC safe to load? UNIMARK LOWBOY TRANSPORTATION LLC (USDOT 1604546, MC-593409) is an active small-fleet motor carrier based in PLEASANT PRAIRIE, WI, operating 77 power units and 163 drivers. Operating authority has been active 19 years (past the 24-month broker-confidence threshold). Across 202 roadside inspections, its vehicle out-of-service rate is 16.0% (below the 22.26% national average), with 15 reportable crashes in the last 24 months. FMCSA has not assigned a safety rating. Vektor rates it clear to load (88/100), with the leading concern: fatal crash on record. Source: FMCSA SAFER/MCMIS, last updated 2026-06-26.
FMCSA fields + Vektor analysis · updated 2026-06-26
ULUNIMARK LOWBOY TRANSPORTATION LLC 88
01
Safety
202 inspections · 24 mo · vs national benchmarks
Out-of-service rate· trailing 24 months vs national benchmark
Vehicle OOS 16.0% (24-mo)50 veh insp · 24-mo · nat'l 22.26%
050%nat'l 22.26%
Driver OOS 0.9% (24-mo)109 drv insp · 24-mo · nat'l 6.67%
030%nat'l 6.67%
OOS trajectory· trailing 6-mo vehicle-OOS rate vs national
16.0% now▼ Improving
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.
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.7 / unit·yr
thin signalabundant signal
Roadside-inspection volume is about what you'd expect for a 77-unit fleet — enough signal to read the safety record, though not a heavy sample.
- Registered power units
- 77
- Inspections · 24 mo
- 109
- Annualized
- ≈55 / yr
- Coverage
- ≈0.7 inspections / unit · yr
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 Driving59
- 393.9 Inoperative required lampsVehicle Maintenance24 · 3 OOS
- 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance18 · 16 OOS
- 395.22 ELD — provider/registration/malfunctionHOS Compliance9
- 393.11 Required lamps/reflectors missingVehicle Maintenance9 · 1 OOS
- 393.45 Brake tubing / hose defectsVehicle Maintenance7 · 1 OOS
- 395.8 Record of duty status (log / ELD) not current or missingHOS Compliance6
- 396.3 Inspection / repair / maintenance not performedVehicle Maintenance6 · 3 OOS
- 390.21 USDOT number marking on vehicleUnsafe Driving4
- 392.16 Failure to use seat beltUnsafe Driving4
02
Authority & insurance
Can they legally + adequately haul your load?
Operating authority· 49 CFR · per type
Operating authority
- Common
- Active
- Contract
- Active
- Broker
- None
Insurance & bonds
BIPD / liability (required)Filed with FMCSA
CargoNone
Surety bond (BMC-84)None
Insurance continuity· insurer · policy · lapses
$1M BIPD · 4 insurers · 1 lapseCoverage lapse
+2 earlier
Liberty Fire · 06–08
State Pennsylvania · 11–16
Greenwich · 16–20
Ace American · 20–23
20062023
No BIPD policy is currently in force in the filing history. The authority record may still list one on file — request a COI to confirm current coverage.
6 insurer eras · collapsed from 8 filings
| Insurer | Period | Limit | Renewals |
|---|---|---|---|
| ACE AMERICAN INSURANCE COMPANY | Apr 2020 → Dec 2023 | $1M | 1 |
| GREENWICH INSURANCE COMPANY | Apr 2016 → Apr 2020 | $1M | 1 |
| THE INSURANCE CO OF THE STATE OF PENNSYLVANIA | Apr 2011 → Apr 2016 | $1M | 1 |
| THE INSURANCE CO OF THE STATE OF PENNSYLVANIA | Apr 2009 → Apr 2009 | $1M | 3 |
| ACE AMERICAN INSURANCE COMPANY | Oct 2008 → Apr 2009 | $1M | 1 |
| LIBERTY MUTUAL FIRE INSURANCE CO. | Oct 2006 → Oct 2008 | $1M | 1 |
03
Equipment & fleet
VIN-decoded · NHTSA vPIC
Capacity· power units = haulable capacity; trailers are towed
- Registered power units (MCS-150)
- 77
- Observed power (24 mo)
- 90
- Trailers (towed)
- 53
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
Fleet age· model years · decoded VINs
Average age
2026
Newest model yr
1997
Oldest model yr
VINs decoded
04
Operations & lanes
Revealed by inspection density across 32 states · 24 mo
Operating footprint· revealed by roadside-inspection geography
Operating radiusNational
revealedStates observed3131
US statesInspections · 24 mo9595
OH busiestInspection density by state· each tile = a state · shade = inspections, last 24 mo
Home base
PLEASANT PRAIRIE, WI
Top corridor
OH ⇄ WI
Density
fewermore
05
Network & fraud
Affiliated entities & reincarnation signals · for review, not a verdict
Last 12 months: 5 trucks also ran under 3 other carriers
VINs inspected under this carrier were recently inspected under other USDOTs too — the active double-broker / shared-equipment signal: USDOT 861200USDOT 1419483USDOT 54283Some overlap is legitimate (leased or sold equipment); review alongside the other signals.
Show all-time history (52 trucks · 49 carriers)
Across all inspections on record: USDOT 3057791USDOT 4392858USDOT 46713USDOT 2439596USDOT 21800USDOT 53467USDOT 2924573USDOT 3078235
Shares a registration email domain with other carriers
@atctransportation.com — 9 carriers: USDOT 12358USDOT 317106USDOT 338764USDOT 435548USDOT 1065561USDOT 1208224USDOT 1288136USDOT 2378032
Capacity consistency· registered vs roadside-observed power units
Registered (MCS-150)7777
Observed (24 mo)9090
Shared w/ other carriers5353
Registered and roadside-observed capacity are broadly consistent.
06
Identity & contact
FMCSA census + L&I dossier
Location
- Physical address
- 10801 CORPORATE DRIVE, PLEASANT PRAIRIE, WI, 53158
- Operation
- Interstate· Hazmat
Contact
- Phone
- (262) 564-7282
- Web domain
- atctransportation.com
Registration
- Officers
- Stephanie Johnston · Mike Smith
- USDOT / docket
- 1604546 · MC-593409
- First registered
- 02/06/2007
- Last MCS-150
- 06/24/2026 · 9,113,256 mi (2025)
- FMCSA safety rating
- Not rated
- Recordable crash rate
- 0.33
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
07
Federal activity
Daily-captured FMCSA licensing & insurance changes — monitored by Vektor
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.
08
Reviews
Verified broker, shipper & driver reviews — moderated
Performance ratings only — never the Vektor risk score
No verified reviews yet
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Leave a review09
Frequently asked
What is UNIMARK LOWBOY TRANSPORTATION LLC's USDOT number?
UNIMARK LOWBOY TRANSPORTATION LLC's USDOT number is 1604546, and its motor carrier number is MC-593409.
Is UNIMARK LOWBOY TRANSPORTATION LLC authorized to operate?
As of 2026-06-26, UNIMARK LOWBOY TRANSPORTATION LLC is active in the FMCSA register with common, contract, broker operating authority on file.
What is UNIMARK LOWBOY TRANSPORTATION LLC's safety record?
UNIMARK LOWBOY TRANSPORTATION LLC has a 16.0% vehicle out-of-service rate (national average 22.26%) across 202 roadside inspections, with 15 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 88/100 (tier: clear).
How big is UNIMARK LOWBOY TRANSPORTATION LLC's fleet?
UNIMARK LOWBOY TRANSPORTATION LLC operates 77 power units and 163 drivers per its most recent MCS-150 filing.
Where is UNIMARK LOWBOY TRANSPORTATION LLC based?
UNIMARK LOWBOY TRANSPORTATION LLC is based in PLEASANT PRAIRIE, WI, with roadside inspections recorded across 32 states.