Alfonso Diaz Transport Service LLC (USDOT 4430087)
MonitorFindings
64.71% vehicle OOS over 17 inspections vs. national average 22.92%
54.55% driver OOS over 22 inspections vs. national average 6.36%. Typically reflects HOS or CDL-compliance issues
Driver fitness ranks 99 of 100, Hours of service 94 of 100, and Vehicle maintenance 87 of 100 among similar carriers with recent violations (higher = worse). fleetfax peer estimate, not official CSA scores.
- DOT number
- USDOT 4430087
- Docket (MC) number
- MC1743612
- Operating authority
- Common carrier authority: active. The federal bulk file showed this carrier's USDOT registration active as of Sep 14, 2026. We could not confirm that live just now.
- Authority granted
- Jul 31, 2025
- Insurance on file
- Liability (BIPD) insurance on file for $750,000.
- Safety rating
- No published safety rating
- Fleet on file
- 3 power units, 3 drivers
- Operation type
- Interstate
- Physical address
- 2909 W ST JOHN ST, TAMPA, FL 33607
- MCS-150 last filed
- Oct 2025
Frequently asked questions
What carrier is DOT 4430087?
DOT 4430087 (USDOT 4430087) is Alfonso Diaz Transport Service LLC, an interstate motor carrier.
What carrier is MC 1743612?
MC 1743612 is the docket number of Alfonso Diaz Transport Service LLC, USDOT 4430087.
What is Alfonso Diaz Transport Service LLC's MC number?
Alfonso Diaz Transport Service LLC's docket number is MC 1743612. Its USDOT number is 4430087.
Is Alfonso Diaz Transport Service LLC currently authorized to operate?
Common carrier authority: active. The federal bulk file showed this carrier's USDOT registration active as of Sep 14, 2026. We could not confirm that live just now. Source: FMCSA registration and licensing records.
Does Alfonso Diaz Transport Service LLC have insurance on file with FMCSA?
Liability (BIPD) insurance on file for $750,000.
Who provides Alfonso Diaz Transport Service LLC's insurance?
Alfonso Diaz Transport Service LLC's liability insurance is filed with FMCSA by Progressive Express Insurance Company.
What is Alfonso Diaz Transport Service LLC's safety record?
In the last 24 months, FMCSA records show a 64.7% vehicle out-of-service rate for Alfonso Diaz Transport Service LLC, from 11 of 17 vehicle inspections, against a national average of 22.9% (fleetfax-computed from FMCSA inspections, as of Sep 10, 2026). FMCSA records also show 0 recordable crashes in the same window.
What is Alfonso Diaz Transport Service LLC's CSA score?
FMCSA does not publish a single CSA score for carriers. Alfonso Diaz Transport Service LLC's public safety data includes its roadside inspection out-of-service rates and crash record, listed on this page.
What is Alfonso Diaz Transport Service LLC's FMCSA safety rating?
Alfonso Diaz Transport Service LLC has no published FMCSA safety rating. Most US carriers have never received a rating review, so an unrated carrier is the common case, not a warning sign by itself.
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Reconstructed from cached and fleetfax-ingested FMCSA public records, so it may be out of date. Records loaded Sep 14, 2026. Verify current status on FMCSA SAFER. fleetfax surfaces the facts; brokers make the judgment. FMCSA status