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Truck Graph
0/100
✗ Do Not Tender
No active for-hire authority. Cannot legally haul freight for hire.
John Slack Trucking
DOT 3435430 · Potter Valley, CA
Report generated: June 9, 2026 at 12:25 AM
✗Authorized for hire?
✗Active insurance?
✗Safety record clean?
✓No fraud flags?
✓No prior revocations?
Carrier Summary

John Slack Trucking (DOT 3435430) is a California-based intrastate carrier headquartered in Potter Valley, CA. As of June 9, 2026 at 12:25 AM, operating authority is active but without for-hire authority. TruckGraph has detected 1 risk signal on this carrier, including: no active insurance filing on record. TruckGraph rates this carrier "Do Not Tender" based on FMCSA compliance data, inspection history, insurance status, and network connection analysis. Last synced: June 9, 2026 at 12:25 AM.

FMCSA Public Record
Slack John L
Operating as: John Slack Trucking
DOT Number3435430
MC Number—
Street10100 EAST RD
City / StatePotter Valley, CA 95469
Phone5302828396
Operation typeIntrastate
HazmatNot authorized
Authority age6 yr
MCS-150 filed01/28/2025
Company officerJohn L Slack
Power units1
Total drivers1
Authority Status
Common (for-hire)—
Contract (for-hire)—
Broker—
TruckGraph Intelligence
Risk Signals
●No active insurance filing on record
✓ OFAC Sanctions: Clear
Connection Chain
Active
OOS rate 100.0% vs. national avg 22.26% — above average
Network Intelligence Map
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Power Units
1
Fleet
Drivers
1
Total
Inspections
1
On record
Crashes
0
On record
OOS Rate
100.0%
↑ Avg 22.26%
Authority Age
6 yr
Since 2020
Violation Categories — Last 24 Months
Hours of Service
1 insp (100%)
Unsafe Driving
1 insp (100%)
Driver Fitness
1 insp (100%)
Vehicle Maintenance
1 insp (100%)· 1 viol
Controlled Substances
1 insp (100%)
Inspection History
1 total · OOS rate 100.0%
DateStateLevelDriver OOSVehicle OOSResult
7/29/2025CAI01OOS
Crash History
0 total on record

No crash records on file.

Insurance Status
⚠ No active insurance filing on record
Verify insurance directly with carrier before tendering any load.
Location
10100 EAST RD, Potter Valley, CA, 95469 · Open in Maps →
10100 EAST RD, POTTER VALLEY, CA, 95469Open in Maps →
Authority Timeline
Authority GrantedJun 2020
FMCSA issued operating authority
Active USDOT — No for-hire authorityCurrent
USDOT record is active but no for-hire operating authority is currently granted

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 Slack John L authorized to operate?

Slack John L's USDOT number is active but it does not hold operating authority for for-hire interstate operations. It may operate as a private carrier. Verify status before tendering.

What is Slack John L's safety record?

Slack John L has 1 roadside inspections on record with an out-of-service rate of 100.0%. Crash history shows 0 incidents. Review the full safety profile above before making a freight decision.

How many trucks does Slack John L operate?

Slack John L operates 1 power units with approximately 1 drivers.

Is Slack John L insured?

Insurance filing details are not available in the current dataset. Verify directly with the carrier before tendering.

Has Slack John L had any risk indicators?

Slack John L has a risk score of 0/100 (Monitor) with 1 active risk signal. Review the risk section above and verify independently before tendering.

What is the DOT number for Slack John L?

Slack John L's DOT number is 3435430. 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). John Slack Trucking Safety Record, DOT 3435430. Retrieved from https://truckgraph.com/carriers/3435430
MLA
"John Slack Trucking Safety Record, DOT 3435430." Truck Graph, Jun 9, 2026, https://truckgraph.com/carriers/3435430
Chicago
"John Slack Trucking Safety Record, DOT 3435430." Truck Graph. Last modified June 9, 2026. https://truckgraph.com/carriers/3435430