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Truck Graph
0/100
No Flags Detected
No risk signals detected. Independently verify before tendering.
William J Sieber
DOT 1997479 · MC MC766428 · Spring Hill, FL
Report generated: June 5, 2026 at 7:30 AM
Authorized for hire?
Active insurance?
Safety record clean?
No fraud flags?
No prior revocations?
Carrier Summary

William J Sieber (DOT 1997479, MC MC766428) is a Florida-based freight carrier headquartered in Spring Hill, FL. As of June 5, 2026 at 7:30 AM, operating authority is currently active. No active risk signals detected. TruckGraph rates this carrier "No Flags Detected" based on FMCSA compliance data, inspection history, insurance status, and network connection analysis. Last synced: June 5, 2026 at 7:30 AM.

Common Authority
FMCSA Public Record
William J Sieber
DOT Number1997479
MC NumberMC766428
Street5414 PILLAR AV
City / StateSpring Hill, FL 34609
Phone
Operation type
HazmatNot authorized
Authority ageN/A
MCS-150 filed
Power units
Total drivers
Authority Status
Common (for-hire)✓ Active
Contract (for-hire)Not authorized
BrokerNot authorized
TruckGraph Intelligence
✓ No risk signals detected
✓ OFAC Sanctions: Clear
Connection Chain
DOT nullShared insurer
Revoked
Network Intelligence Map
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Power Units
Fleet
Drivers
Total
Inspections
0
On record
Crashes
0
On record
OOS Rate
↓ Avg 22.26%
Authority Age
N/A
Inspection History
0 total · No inspections

No inspection records on file.

Crash History
0 total on record

No crash records on file.

Insurance Status
Status
✓ Active filing on record
Insurer
WESTFIELD INSURANCE CO.
Coverage type
91X
Coverage amount
$750,000
Effective
11/9/2011
Location
5414 PILLAR AV, Spring Hill, FL, 34609 · Open in Maps →
5414 PILLAR AV, SPRING HILL, FL, 34609Open in Maps →
Authority Timeline
ActiveCurrent
Authority currently active

Source: FMCSA compliance records, inspection data, crash records, insurance filings, and TruckGraph analysis. View methodology

Important Legal Notice

Data sourced from FMCSA public records and TruckGraph independent analysis. This is not legal advice, not a guarantee of carrier safety, and not a compliance certification. Verify through official FMCSA sources before tendering. Last synced: .

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Frequently Asked Questions

Is William J Sieber authorized to operate?

Yes. William J Sieber holds Common operating authority and is currently active.

What is William J Sieber's safety record?

William J Sieber does not have a substantial inspection history on record. This may indicate limited interstate operations.

How many trucks does William J Sieber operate?

Fleet size data is not available for William J Sieber in the current dataset.

Is William J Sieber insured?

William J Sieber has active insurance coverage on file. Coverage amount and carrier details are shown in the insurance section above.

Has William J Sieber had any risk indicators?

No risk signals detected for William J Sieber as of the most recent data sync. Score: 0/100 (Clear).

What is the DOT number for William J Sieber?

William J Sieber's DOT number is 1997479 and MC number is MC766428. These identifiers are assigned by the FMCSA and can be used to look up this carrier in official compliance databases.

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Truck Graph data is open and citable. For press inquiries, contact our editorial team.

APA
Truck Graph. (2026). William J Sieber Safety Record, DOT 1997479. Retrieved from https://truckgraph.com/carriers/1997479
MLA
"William J Sieber Safety Record, DOT 1997479." Truck Graph, Jun 5, 2026, https://truckgraph.com/carriers/1997479
Chicago
"William J Sieber Safety Record, DOT 1997479." Truck Graph. Last modified June 5, 2026. https://truckgraph.com/carriers/1997479