A-1 TRANSIT CORPORATION
Book with caution — review signals below
No hard OOS / revoked / uninsured blocker, but elevated risk signals need a human look before booking.
- OOS rate worse than size peers Driver and/or vehicle out-of-service rate is above the peer median.
Plain-text risk summary (print / paste)
TruckCodex risk summary — A-1 TRANSIT CORPORATION (USDOT 943618) Verdict: CAUTION Book with caution — review signals below No hard OOS / revoked / uninsured blocker, but elevated risk signals need a human look before booking. Authority / census status: Active Active BIPD limit: $1,000,000 Officer(s): BILL SONNENTAG (Company officer); TIM SONNENTAG (Company officer 2) Organization: CORPORATION Blockers: (none) Cautions: • OOS rate worse than size peers — Driver and/or vehicle out-of-service rate is above the peer median. On file: • Insurance on file · $1,000,000 — ZURICH AMERICAN INSURANCE COMPANY · 91X • BOC-3 process agent on file — TRUCK PROCESS AGENTS OF AMERICA, INC Source: https://truckcodex.com/usdot/943618/ As of: Jul 18, 2026 Always confirm on FMCSA SAFER and L&I before tendering — TruckCodex mirrors public filings and can lag by up to a day.
TruckCodex · compliance grade
Compliance grade B
Composite of 4/5 scored components (mean 79/100). Expand for per-signal evidence. Heuristic — not an FMCSA rating or legal advice.
B
confidence 80% · 4/5 signals
Compliance grade B
Composite of 4/5 scored components (mean 79/100). Expand for per-signal evidence. Heuristic — not an FMCSA rating or legal advice.
Active census status with no OOS order or revoked authority on file.
Active BIPD/Primary-like policy on file in our insurance history.
Driver OOS 1.6% vs peer median 1.2% (worse). Vehicle OOS 25.9% vs peer median 16.7% (worse). n=2017 same-size ACTIVE peers.
FMCSA has not assigned this carrier a formal safety rating. We do not invent one.
NR reason: No published FMCSA safety_rating.
No BMC-91 insurance-lapse watch classification on file for this USDOT.
TruckCodex compliance grade from authority, BIPD, peer OOS, FMCSA safety rating, and insurance-watch signals. Not legal advice. See methodology. Booking triage on this page: Caution.
Company profile
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InsuranceZURICH AMERICAN INSURANCE COMPANYPolicy effective Oct 1, 2006
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Process AgentTRUCK PROCESS AGENTS OF AMERICA, INCBOC-3 on file
Fleet details (MCS-150)
| Vehicle type | Owned | Term leased | Trip leased |
|---|---|---|---|
| Truck tractors | 266 | 0 | 0 |
| Trailers | 1,143 | 0 | 0 |
| Trucks | 132 | 0 | 0 |
Self-reported on the carrier’s Form MCS-150 (FMCSA Company Census).
Accident reports (24 months)
All 149 crashes →| Last 6 months | 6–12 months | 12–24 months | Total | |
|---|---|---|---|---|
| Fatalities | 0 | 0 | 0 | 0 |
| Injuries | 0 | 2 | 0 | 2 |
| Tow-away | 2 | 1 | 5 | 8 |
| Crash reports | 2 | 2 | 5 | 9 |
Reportable crashes from FMCSA MCMIS for the trailing 24 months. Counts may differ slightly from SAFER due to reporting lag.
Inspections (24 months)
All 185 inspections →| Driver | Vehicle | Hazmat | |
|---|---|---|---|
| Inspections | 113 | 113 | 0 |
| OOS inspections | 0 | 17 | 0 |
| OOS percentage | 0% | 15.04% | — |
| National average | 6.67% | 22.26% | 4.44% |
Roadside inspections in the last 24 months. National averages are FMCSA MCSAP reference rates (driver ~6.7%, vehicle ~23.4%, hazmat ~4.4%).
Carrier analysis & narrative context SEO summary, status notes, AI overview, and safety profiles
A-1 TRANSIT CORPORATION is a corporation based in MARATHON, WI, registered with the FMCSA under USDOT 943618. The carrier is currently active in FMCSA's records, and has not yet received a formal FMCSA safety rating. MCS-150 self-reporting puts the fleet at 398 power units and 241 drivers, with 185 roadside inspections on file and a peak out-of-service rate of 25.9%. Use this page to verify the carrier's authority and insurance, review its inspection and crash history, and cross-reference live data on FMCSA SAFER before booking a load or onboarding a partner.
Carrier is unrated
FMCSA has not assigned this carrier a formal safety rating. Use the inspection history and BASIC scores below to assess on-road performance.
A-1 TRANSIT CORPORATION is a large fleet, operating 398 power units and 241 drivers, organized as a corporation, based in Marathon, WI. Across 121 roadside inspections in the last 24 months, the fleet recorded a 14.9% out-of-service rate, with 10 reportable crashes. BIPD/Primary insurance is on file with ZURICH AMERICAN INSURANCE COMPANY, and operating authority is active for contract.
121 roadside inspections over the last 24 months, up 116% versus the prior 24 months, concentrated in WI (52) and MO (28), with Level 2 inspections the most common.
14.9% out-of-service rate; led by Vehicle Maintenance (50.5% of violations); top code 392.2 (Operating a CMV while ill or fatigued) cited 10 times.
The fleet comprises 398 power units (large fleet) and 241 drivers; Freightliner, Transcraft, and Unknown are the most-inspected makes.
Risk Signals
Out-of-Service rate vs same-size peers FMCSA roadside inspections, % placed out-of-service
Compared against 2,017 ACTIVE carriers operating 199–597 power units (±50% of this carrier's 398 unit fleet).
Inspection Analytics Monthly activity · BASIC mix · state map
Monthly Inspection Activity (24 months)
Violations by BASIC Category
Activity by State
Vehicle Fleet Top makes and models observed in roadside inspections
| Make | Model | Inspections |
|---|---|---|
| Freightliner | 140 | |
| Transcraft | 37 | |
| Mack | 18 | |
| Unknown | 14 | |
| Express | 11 | |
| Western Star | 9 | |
| Wabash National | 8 | |
| Trail-Eze | 7 | |
| Great Dane | 6 |
SMS BASIC Scores FMCSA Safety Measurement System per-BASIC scores
| BASIC | Inspections | Serious | Measure | Percentile | Alert | As Of |
|---|---|---|---|---|---|---|
| Driver Fitness | 0 | — | 0.00 | 0 | — | Jul 13, 2026 |
| Controlled Substances / Alcohol | 0 | — | 0.00 | 0 | — | Jul 13, 2026 |
| Hours of Service | 2 | — | 0.01 | 0 | — | Jul 13, 2026 |
| Unsafe Driving | 20 | — | 0.33 | 0 | — | Jul 13, 2026 |
| Vehicle Maintenance | 36 | — | 4.17 | 4 | — | Jul 13, 2026 |
Higher percentiles indicate worse performance relative to peer carriers. Carriers at or above the FMCSA intervention threshold are marked ALERT.
Recent Inspections (185 rows) View all 185 →
| Inspection # | Date ▼ | State | Level | Station | Vehicle | Violations | Top Codes | OOS |
|---|---|---|---|---|---|---|---|---|
| 88199032 | Jun 18, 2026 | WI | 3 | — |
FREIGHTLINER TRUCK TRACTOR
|
1 | 392.16-D | No |
| 88109646 | Jun 9, 2026 | WI | 2 | — |
FREIGHTLINER TRUCK TRACTOR
|
1 | 393.75A2-TAOTLM | Yes |
| 87997276 | May 28, 2026 | FL | 2 | — |
MACK TRUCK TRACTOR
|
2 | 393.45C-BSG, 392.2-SLLIFTA | No |
| 87872656 | May 14, 2026 | WI | 2 | — |
FREIGHTLINER TRUCK TRACTOR
|
1 | 393.9A-LSML | No |
| 87719201 | Apr 29, 2026 | FL | 2 | BELLEVIEW FL |
FREIGHTLINER TRUCK TRACTOR
|
3 | 67C7V-F, 9A-LFTSI, 9A-LHLI | No |
| 87667575 | Apr 23, 2026 | FL | 3 | OCALA FL |
FREIGHTLINER STRAIGHT TRUCK
|
2 | 2-SLLEWA2, 2-SLLIRP | No |
| 87666556 | Apr 22, 2026 | FL | 3 | DEBARY FL |
FREIGHTLINER STRAIGHT TRUCK
|
0 | — | No |
| 87633330 | Apr 20, 2026 | FL | 1 | LEE FL |
MACK TRUCK TRACTOR
|
4 | 21TB1-MC, 2-SLLMF, 11A1-CSLRR | No |
| 87471962 | Mar 30, 2026 | WI | 3 | BELDENVILLE WI |
FREIGHTLINER TRUCK TRACTOR
|
1 | 392.2-SLLS2 | No |
| 87231803 | Mar 4, 2026 | WI | 2 | RHINELANDER WI |
FREIGHTLINER TRUCK TRACTOR
|
0 | — | No |
| 87176118 | Feb 27, 2026 | WI | 3 | HANCOCK WI |
FREIGHTLINER TRUCK TRACTOR
|
1 | 392.2-SLLEWA1 | No |
| 87130201 | Feb 23, 2026 | IL | 3 | I-72 |
FREIGHTLINER TRUCK TRACTOR
|
0 | — | No |
| 86971718 | Feb 3, 2026 | WI | 3 | NEENAH WI |
FREIGHTLINER STRAIGHT TRUCK
|
1 | 392.2-SLLSR | No |
| 86953007 | Feb 2, 2026 | FL | 2 | GREEN COVE SPRINGS FL |
MACK TRUCK TRACTOR
|
3 | 393.9A-LTSI, 392.2-SLLMF, 393.9A-LSLI | Yes |
| 86800534 | Jan 12, 2026 | WI | 2 | HANCOCK WI |
FREIGHTLINER TRUCK TRACTOR
|
3 | 392.2-SLL, 393.60C, 392.2-SLLEQP | No |
| 86760074 | Jan 8, 2026 | WI | 1 | PLEASANT PRAIRIE WI |
FREIGHTLINER TRUCK TRACTOR
|
1 | 393.75A3-TAOL | Yes |
| 86621640 | Dec 17, 2025 | WI | 2 | TOWN NEKIMI WI |
FREIGHTLINER TRUCK TRACTOR
|
0 | — | No |
| 86489071 | Dec 3, 2025 | WI | 2 | POYNETTE WI |
FREIGHTLINER TRUCK TRACTOR
|
3 | 393.124D-CCP, 393.100B-C, 393.124C-CCP | Yes |
| 86416956 | Nov 24, 2025 | FL | 3 | LAWTEY FL |
MACK TRUCK TRACTOR
|
0 | — | No |
| 86306183 | Nov 10, 2025 | WI | 2 | ANTIGO WI |
FREIGHTLINER TRUCK TRACTOR
|
2 | 393.9A-LTSIR, 392.2-INAT | No |
| 86260831 | Nov 6, 2025 | FL | 3 | OCALA FL |
FREIGHTLINER STRAIGHT TRUCK
|
0 | — | No |
| 86251173 | Nov 3, 2025 | IN | 2 | RICHMOND IN |
FREIGHTLINER TRUCK TRACTOR
|
0 | — | No |
| 86147299 | Oct 22, 2025 | WI | 1 | HUDSON WI |
FREIGHTLINER TRUCK TRACTOR
|
2 | 393.75A3-TAOLTIS, 393.55E-B | Yes |
| 86087819 | Oct 17, 2025 | FL | 3 | BELLEVIEW FL |
MACK TRUCK TRACTOR
|
0 | — | No |
| 86087061 | Oct 16, 2025 | WI | 2 | WEYAUWEGA WI |
FREIGHTLINER STRAIGHT TRUCK
|
0 | — | No |
Recent Crashes (149 rows) View all 149 →
| Report # | Date ▼ | State | Fatalities | Injuries | Tow | Hazmat | Severity |
|---|---|---|---|---|---|---|---|
| MN0261270007 | May 7, 2026 | MN | Yes | Yes | Tow | ||
| MO0000117987 | Mar 26, 2026 | MO | 0 | 0 | Yes | No | Tow |
| ILX003948966 | Sep 4, 2025 | IL | 0 | 1 | Yes | No | Injury |
| ILX003930675 | Aug 20, 2025 | IL | 0 | 1 | No | No | Injury |
| FL2695464005 | Mar 11, 2025 | FL | 0 | 0 | Yes | No | Tow |
| WI0000124957 | Feb 28, 2025 | WI | 0 | 0 | Yes | No | Tow |
| ILX003581621 | Oct 1, 2024 | IL | 0 | 0 | Yes | No | Tow |
| FL2658277704 | Aug 12, 2024 | FL | 0 | 0 | Yes | No | Tow |
| WI0000123267 | Jul 30, 2024 | WI | 0 | 0 | Yes | No | Tow |
| MO0000109185 | Jul 11, 2024 | MO | 0 | 0 | Yes | No | Tow |
| IN0904493492 | Apr 24, 2024 | IN | 0 | 0 | Yes | No | Tow |
| WI0000121764 | Jan 9, 2024 | WI | 0 | 0 | Yes | No | Tow |
| IN0904427348 | Jan 8, 2024 | IN | 0 | 0 | Yes | No | Tow |
| WI0000121338 | Oct 31, 2023 | WI | 0 | 0 | Yes | No | Tow |
| ILX003213896 | Oct 25, 2023 | IL | 0 | 1 | Yes | No | Injury |
| WI0000120593 | Jul 28, 2023 | WI | 0 | 0 | Yes | No | Tow |
| WI0000120309 | Jun 23, 2023 | WI | 0 | 0 | Yes | No | Tow |
| IN0904273687 | May 9, 2023 | IN | 0 | 1 | Yes | No | Injury |
| FL2505786103 | Mar 24, 2023 | FL | 0 | 0 | Yes | No | Tow |
| MN0230740140 | Mar 15, 2023 | MN | 0 | 1 | Yes | No | Injury |
| WI0000118472 | Nov 15, 2022 | WI | 0 | 0 | Yes | No | Tow |
| FL2502693402 | Nov 8, 2022 | FL | 0 | 1 | Yes | No | Injury |
| WI0000118323 | Oct 31, 2022 | WI | 0 | 2 | Yes | No | Injury |
| ILX002808396 | Oct 28, 2022 | IL | 0 | 1 | Yes | No | Injury |
| WI0000118139 | Oct 14, 2022 | WI | 0 | 0 | Yes | No | Tow |
Authority Records (1 docket)
Revocations & Inactive Status
Authority actions other than active status — revocations, voluntary surrenders, and dormant dockets.
| Date | Docket | Authority | Status | Applied |
|---|---|---|---|---|
| Unknown | MC404792 | common | N | — |
Insurance Coverage Timeline (4 rows)
Every insurance policy on file, newest effective date first. Amber rows mark BIPD/Primary coverage gaps.
| Insurer | Policy # | Type | Limit | Effective | Cancel | Status |
|---|---|---|---|---|---|---|
| TRAVELERS PROPERTY CASUALTY CO. OF AMERICA | QT-660-4346L050-TIL-07 | CARGO | — | May 1, 2007 | May 19, 2018 | CANCELLED |
| ZURICH AMERICAN INSURANCE COMPANY | BAP8196362 | 91X | $1,000,000 | Oct 1, 2006 | On file | ACTIVE |
| ZURICH AMERICAN INSURANCE COMPANY | BAP929933500 | BIPD/Primary | — | Jan 1, 2001 | Oct 1, 2006 | REPLACED |
| ZURICH AMERICAN INSURANCE COMPANY | BAP929933500 | BIPD/Primary | — | Jan 1, 2001 | Jan 12, 2007 | CANCELLED |
Compliance Timeline Merged authority / insurance / enforcement events
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May 19, 2018insuranceCANCEL — TRAVELERS PROPERTY CASUALTY CO. OF AMERICA
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Jan 12, 2007insuranceTERM/CANCL — ZURICH AMERICAN INSURANCE COMPANY
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Jan 4, 2007
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Oct 1, 2006insuranceTERM/REPL — ZURICH AMERICAN INSURANCE COMPANY
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Apr 24, 2001
Top Stations & Violation Codes Where this carrier gets inspected and what they get cited for
Most-Inspected Stations
| Station | State | Inspections | OOS |
|---|---|---|---|
| MARYLAND HEIGHTS MO | MO | 10 | 1 |
| HANCOCK WI | WI | 10 | 1 |
| HULL IL | MO | 8 | 1 |
| SPARTA WI | WI | 8 | 0 |
| OCALA FL | FL | 6 | 1 |
| WEST LAKELAND MN | MN | 6 | 3 |
| HUDSON WI | WI | 4 | 2 |
| BRIDGETON MO | MO | 3 | 0 |
| SPARTA SWEF | WI | 3 | 0 |
| WEYAUWEGA WI | WI | 3 | 0 |
Top Violation Codes Cited
| Code | Description | Category | Cited | OOS |
|---|---|---|---|---|
| 392.2 | Violation of Local Laws - Explain: | Unsafe Driving | 37 | 0 |
| 393.9(a) | Inoperable required lamps | Vehicle Maintenance | 7 | 3 |
| 392.16(a) | Failing to use seat belt (49 CFR) | Unsafe Driving | 5 | 0 |
| 393.45(b)(2) | Brake hose or tubing chafing and/or kinking | Vehicle Maintenance | 4 | 1 |
| 393.75(a)(3) | Tire-flat and/or audible air leak | Vehicle Maintenance | 3 | 3 |
| 383.23(a)(2) | Operating a CMV without a CDL | Driver Fitness | 2 | 2 |
| 393.104(b) | Damaged securement system/tiedowns | Vehicle Maintenance | 2 | 0 |
| 393.104(f)(3) | Loose or unfastened tiedown. | Vehicle Maintenance | 2 | 0 |
| 393.110 | Failing to meet minimum tiedown requirements | Vehicle Maintenance | 2 | 2 |
| 393.45 | Brake tubing and hose adequacy | Vehicle Maintenance | 2 | 2 |
Related Records Cross-references to every adjacent page
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Wisconsin carriers
All carriers based in Wisconsin
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Marathon carriers
Carriers based in Marathon, WI
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Stations in Wisconsin
Where this carrier might be inspected
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Docket MC404792
common · N · MC
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TRAVELERS PROPERTY CASUALTY CO. OF AMERICA
CARGO policy on file
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ZURICH AMERICAN INSURANCE COMPANY
91X policy on file
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TRUCK PROCESS AGENTS OF AMERICA, INC
BOC-3 process agent · 127,947 carriers served
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185 inspections
Full roadside inspection history
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149 reportable crashes
FMCSA MCMIS crash log
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Fleet recall search
NHTSA recalls covering this fleet's vehicle years/makes
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File a complaint
Open the FMCSA National Consumer Complaint form for this carrier
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Carrier comparison tool
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Insurance-lapse watch
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How FMCSA safety ratings work
BASIC percentiles and compliance review context
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BOC-3 process agents explained
Why every interstate carrier must file a process agent
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FMCSA compliance filings guide
MCS-150, insurance, and authority filing requirements
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Roadside inspection rights
What drivers and carriers can expect during a stop
How to verify A-1 TRANSIT CORPORATION
- Verify USDOT and MC numbers match the carrier's documents. Compare the USDOT number and MC docket on this page to the numbers on the carrier's invoice, rate confirmation, or load-board listing. A mismatch between the carrier's claimed numbers and the registered legal name is the single most common red flag.
- Check active operating authority and insurance status. Confirm the Authority Records show at least one ACTIVE docket for the type of operation you're booking, and that the Active Insurance card lists a current BIPD/Primary policy. A revoked authority or uninsured carrier cannot legally operate.
- Review safety rating and SMS BASIC scores. Check the carrier's FMCSA safety rating (if any) and the SMS BASIC table. A high percentile in any BASIC category — especially Unsafe Driving, HOS, or Vehicle Maintenance — is worth investigating before tendering a load.
- Examine inspection and crash history. Open the Inspection History and Crash History subpages for the full record. Look for patterns: repeat OOS findings on the same unit, multiple crashes in a short window, or violations clustered in one BASIC category.
- Cross-reference real-time data with FMCSA SAFER. For the most current snapshot — within 24 hours of any insurer filing or authority change — click through to the FMCSA SAFER lookup. TruckCodex mirrors SAFER and L&I daily; SAFER itself reflects filings within 24 hours.
Frequently asked questions about A-1 TRANSIT CORPORATION
Is A-1 TRANSIT CORPORATION an active motor carrier? ▾
What is A-1 TRANSIT CORPORATION's safety rating? ▾
How many inspections has A-1 TRANSIT CORPORATION had? ▾
What is A-1 TRANSIT CORPORATION's out-of-service rate? ▾
Where is A-1 TRANSIT CORPORATION based? ▾
Does A-1 TRANSIT CORPORATION have valid operating authority? ▾
How many trucks and drivers does A-1 TRANSIT CORPORATION operate? ▾
Has A-1 TRANSIT CORPORATION had any crashes? ▾
About FMCSA carrier records
Every commercial motor carrier operating in the United States is required to register with the Federal Motor Carrier Safety Administration (FMCSA) and obtain a USDOT number. The USDOT number is a permanent, unique identifier — once assigned, it stays with the carrier for life and is never reissued to another company. Carriers must update their registration every two years on Form MCS-150 to keep their address, fleet size, and operating data current.
Carrier safety data lives in FMCSA's Motor Carrier Management Information System (MCMIS): roadside inspections, crashes, out-of-service findings, and the seven Behavior Analysis and Safety Improvement Categories (BASICs) that make up the SMS scoring methodology. For-hire carriers must also hold operating authority — an MC, FF, or MX docket number — which is separate from the USDOT number and requires continuous insurance and BOC-3 process-agent filings to remain active.
TruckCodex mirrors FMCSA's public SAFER and L&I systems on a daily refresh cycle. Every record on this page reflects what FMCSA has on file. We do not edit or modify carrier data — for real-time confirmation immediately before a transaction, click through to the FMCSA SAFER lookup linked in the related records section above. Safety ratings, when present, come from formal compliance reviews; most active carriers have not been reviewed and are correctly listed as unrated.
Data sources & freshness
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.