Carrier profile · USDOT 3435430 · FMCSA data fetched 2026-10-30

SLACK JOHN L

DBA JOHN SLACK TRUCKING

1 power units1 driversIntrastate non-hazmatPOTTER VALLEY, CA

Census status Active (A)

Official links FMCSA SAFER

← Back to overviewSafety · USDOT 3435430

VAX record reference score

Beta · trial v1

Not an FMCSA rating, not a prediction and not a load decision. Thresholds are fixed and not yet calibrated.

Reference score (0–100)

Insufficient data

Coverage — determinable weight, not a score

0/100

Crashes, 24 mo (shown only, not scored)

How this trial score works and its limits →

Safety

Source: SMS AB PassProperty (4y6x-dmck) · raw queryDataset updated 2026-10-13 07:05 UTCFetched 2026-10-30 22:43 UTC

No SMS summary row for this USDOT. SMS covers active interstate and intrastate hazmat carriers only.

Also on FMCSA:SAFER FMCSA SMS (BASICs)

Roadside inspections · record level

Source: Vehicle Inspection File (fx4q-ay7w) · raw queryDataset updated 2026-10-30 13:07 UTCFetched 2026-10-30 22:43 UTC

Window: 2024-10-30 → 2026-10-30 (24 months ending on the fetch date). Records FMCSA has not yet uploaded are not included.

Inspections (records)

States observed

Driver-level insp.

with driver OOS 0 · 0.0%

Vehicle-level insp.

with vehicle OOS 1 · 100.0%

Monthly inspections & out-of-service rate · 24 months

Inspections per month (count)

Vehicle-level inspections (I, II, V, VI)
Driver-level inspections (I, II, III, VI)

Out-of-service rate by month (%)

Vehicle OOS rate
Driver OOS rate (dashed)
Hollow point = fewer than 5 eligible inspections

Computed from record-level inspections in fx4q-ay7w (window 2024-10-30 → 2026-10-30, fetched 2026-10-30 22:43 UTC). OOS rate = inspections with driver/vehicle OOS > 0 ÷ inspections at a driver/vehicle-examining level — not violation counts. Months with no eligible inspection leave a gap (not 0%). The SMS summary is not used to build history.

Driver-level = Levels I, II, III, VI; vehicle-level = Levels I, II, V, VI (FMCSA North American Standard levels). Level IV special studies are in neither. These record-level counts can differ from the SMS summary above, which uses its own snapshot and is left unchanged.

I · Full (driver + vehicle) · 1

Inspection observation distribution — not live routes or a service area

01 → 1

State ranking · total 1

1CA1 · 100%

Date	State	Level	Violations	OOS	Driver viol/OOS	Vehicle viol/OOS	ID
2025-07-29	CA	1	1	1	0 / 0	1 / 1	85353265

Reported crashes

Source: Crash File (aayw-vxb3) · raw queryDataset updated 2026-10-30 11:24 UTCFetched 2026-10-30 22:43 UTC

Window: 2024-10-30 → 2026-10-30 (24 months ending on the fetch date). Records FMCSA has not yet uploaded are not included.

Crash reports

Fatalities

Injuries

Tow-away

The source responded with no crash reports in this window.

Crash reports are listed as filed by states; they do not determine fault or preventability. VIN, plate and exact location are not shown.

Carrier profile · USDOT 3435430 · FMCSA data fetched 2026-10-30

SLACK JOHN L

DBA JOHN SLACK TRUCKING

1 power units1 driversIntrastate non-hazmatPOTTER VALLEY, CA

Census status Active (A)

Official links FMCSA SAFER

← Back to overviewSafety · USDOT 3435430

Trial reference score: waiting for the official authority and inspection sources — no score is shown until they answer.

Safety

Loading this official source… values are not shown until it answers (not zero).

Also on FMCSA:SAFER FMCSA SMS (BASICs)

Roadside inspections

Loading this official source… values are not shown until it answers (not zero).

Reported crashes

Loading this official source… values are not shown until it answers (not zero).