FMCSA served an involuntary suspension notice on October 5, 2026. This carrier’s operating authority is scheduled to be suspended on November 4, 2026.
FMCSA has a cancellation on file for this carrier’s current BI/PD policy, effective November 4, 2026. That is a filed date, not an estimate. It may be replaced before it takes effect; check current filings before you quote.
- Legal name
- Sigma Squared Transport Corporation
- USDOT number
- 4473629
- MC docket
- MC1547581
- Physical address
- 1101 N Cleveland Ave Apt 14, Sioux Falls, SD, 57103
- d•••@s•••.com Unlock
- Power units
- 6
- Drivers
- 7
- Operation
- Interstate
- Operating radius
- Interstate 100+ mi
- Cargo
- General Freight
- Operation class
- Authorized For-Hire
- Last MCS-150 filing
- Nov 14, 2025
- Common authority
- Active
- Broker authority
- Not held
- USDOT registered
- Sep 26, 2025
- Insurer (writing paper)
- Accredited Specialty Insurance Company
- Filing form
- BMC-91X
- Coverage amount
- $750,000
- BI/PD on file
- $750,000
- Estimated renewal window
- Q4 2026
Verified in MOTUS on Sep 29, 2026: the filings above were reconciled with FMCSA’s live registration record on that date.
Working this account? See the current renewal estimate free with the X-date lookup.
- FMCSA safety rating
- Not rated
- Roadside inspections (24 mo)
- 5
- Out-of-service inspections
- 2
- Inspections with violations
- 4
- BASICs with acute/critical violations
- 0
- SMS population
- Interstate
Is Sigma Squared Transport Corporation insured?
Yes. Sigma Squared Transport Corporation (USDOT 4473629) has active BI/PD liability insurance on file with FMCSA, currently written by Accredited Specialty Insurance Company, with $750,000 in coverage on the filing.
What insurance company does Sigma Squared Transport Corporation use?
Sigma Squared Transport Corporation's current BI/PD filing is written by Accredited Specialty Insurance Company. Insurer changes show up in the daily-refreshed federal filing record.
What is Sigma Squared Transport Corporation's MC number?
Sigma Squared Transport Corporation's FMCSA docket is MC1547581, paired with USDOT 4473629.
Is Sigma Squared Transport Corporation safe to work with?
Sigma Squared Transport Corporation's FMCSA safety rating is not rated (most carriers never receive one), with 5 roadside inspections in the last 24 months, 0 of the five public BASICs carrying an acute or critical violation from an FMCSA investigation. The full inspection-level record is on this page.
When does Sigma Squared Transport Corporation's insurance renew?
Sigma Squared Transport Corporation's insurer has filed a cancellation of its current BI/PD policy with FMCSA, effective Nov 4, 2026. Whether the policy is renewed, replaced or ends will show in the filing record on that date; before the filing, the policy had been estimated to renew in Q4 2026.
How many trucks does Sigma Squared Transport Corporation operate?
Sigma Squared Transport Corporation reports 6 power units and 7 drivers in its latest MCS-150 census filing.
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Source: FMCSA census, Licensing & Insurance (L&I) and SMS publications, mirrored and refreshed daily. Record last synced Oct 23, 2026. Native Base is not affiliated with FMCSA; always confirm against the live federal record before binding.
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