Carrier profile · USDOT 948584 · MC-406494 · Updated Jun 13, 2026

Diamond Coring Co Inc

15 power unitsRegional · 3 statesCHICAGO, IL50/100

CARRIER ACTIVEMC-406494 ACTIVE

Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 0.0%24-mo cumulative

050%

Driver OOS 0.0%24-mo cumulative

030%nat'l 6.67%

Every inspection in the window pooled — 2 vehicle and 3 driver inspections over 24 months.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

3 inspections in the charted months · busiest month Oct '24 · 1

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Thin coverage

Under-inspected

Expected

Well-monitored

Heavily inspected

≈0.1 / unit·yr

thin signalabundant signal

Few roadside inspections for a 15-unit fleet — the out-of-service and violation signals above rest on a small sample, so weight them cautiously. Thin coverage on a young authority is itself a flag.

Registered power units: 15
Inspections · 24 mo: 3
Annualized: ≈2 / yr
Coverage: ≈0.1 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

Unsafe Driving

0violations

clean · per-BASIC

Hours-of-Service

0violations

clean · per-BASIC

83%

Driver Fitness

Vektor peer est.

Controlled Substances

0violations

clean · per-BASIC

Vehicle Maintenance

0violations

clean · per-BASIC

Percentile = standing among same-exposure peers (higher = worse). FMCSA publishes percentiles for only some carriers (shown official); elsewhere we show a Vektor peer-percentile estimate, or the absolute SMS measure when there are too few inspections to rank.

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving3 · 0 OOS
383.23 Operating without a valid CDLDriver Fitness2 · 2 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 4 inspections — a clean logging history.

Crash history· 13 total · 0 in 24 mo

Total crashes

In last 24 mo

Fatal

Injury

Year	Crashes	Fatal	Injury	Tow
2020	1	1	1	1
2019	1	0	1	1
2018	1	0	0	1
2017	2	0	1	1
2015	1	1	0	1
2012	1	0	1	1
2008	2	0	0	2
2007	1	0	1	1
2006	1	0	0	1
2005	1	0	1	1
1999	1	0	0	1

Date	State	Fatalities	Injuries	Tow-away
Jul 28, 2020	IN	1	1	Yes
Sep 28, 2019	IN	0	1	Yes
Nov 12, 2018	IN	0	0	Yes
Dec 5, 2017	IN	0	1	No
Feb 9, 2017	IL	0	0	Yes
Aug 19, 2015	WI	1	0	Yes
Jun 9, 2012	NJ	0	1	Yes
Jul 29, 2008	IL	0	0	Yes
Jun 20, 2008	IL	0	0	Yes
Nov 14, 2007	IL	0	1	Yes
Jul 28, 2006	IL	0	0	Yes
Mar 22, 2005	IL	0	1	Yes
Aug 6, 1999	IL	0	0	Yes