Diamonds Express INC (USDOT 3440933)
MonitorFindings
50% vehicle OOS over 14 inspections vs. national average 22.95%
17.86% driver OOS over 28 inspections vs. national average 6.4%. Typically reflects HOS or CDL-compliance issues
Vehicle maintenance ranks 82 of 100, Driver fitness 81 of 100, and Hours of service 77 of 100 among similar carriers with recent violations. Higher is worse. fleetfax peer estimate, not official CSA scores.
- DOT number
- USDOT 3440933
- Docket (MC) number
- MC1117536
- Operating authority
- Common carrier authority: active. USDOT registration showed active on FMCSA’s file as of Sep 25, 2026. Not yet confirmed live.
- Authority granted
- Jul 10, 2020
- Insurance on file
- Liability (BIPD) insurance on file for $750,000.
- Safety rating
- No published safety rating
- Fleet on file
- 12 power units, 5 drivers
- Operation type
- Interstate
- Physical address
- 3128 4TH STREET WEST, LANCASTER, CA 93534
- MCS-150 last filed
- May 2026
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Frequently asked questions
What carrier is DOT 3440933?
USDOT 3440933 is Diamonds Express INC, an interstate motor carrier.
What carrier is MC 1117536?
MC 1117536 is the docket number of Diamonds Express INC, USDOT 3440933.
What is Diamonds Express INC's MC number?
Diamonds Express INC's docket number is MC 1117536. Its USDOT number is 3440933.
Is Diamonds Express INC currently authorized to operate?
Common carrier authority: active. USDOT registration showed active on FMCSA’s file as of Sep 25, 2026. Not yet confirmed live. Source: FMCSA registration and licensing records.
Does Diamonds Express INC have insurance on file with FMCSA?
Liability (BIPD) insurance on file for $750,000.
Who provides Diamonds Express INC's insurance?
Diamonds Express INC's liability insurance is filed with FMCSA by Southlake Specialty Insurance Company.
What is Diamonds Express INC's safety record?
In the last 24 months, FMCSA records show a 50.0% vehicle out-of-service rate for Diamonds Express INC, from 7 of 14 vehicle inspections, against a national average of 22.9% (fleetfax-computed from FMCSA inspections, as of Sep 21, 2026). FMCSA records also show 2 recordable crashes in the same window.
What is Diamonds Express INC's CSA score?
FMCSA does not publish a single CSA score for carriers. Diamonds Express INC's public safety data includes its roadside inspection out-of-service rates and crash record, listed on this page.
What is Diamonds Express INC's FMCSA safety rating?
Diamonds Express INC has no published FMCSA safety rating. Most US carriers have never had a rating review.
Changes over time
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From FMCSA public records loaded Sep 25, 2026; may be out of date. fleetfax shows the facts; you make the call. FMCSA status