DIAMOND MATERIALS LLC
USDOT 45597 • 924 S HEALD ST, WILMINGTON, DE, 19801
ACTIVEMotor Carrier
Authority:1 active
Insurance:2 current
BOC-3:On file
Safety Rating:C
MCS-150:Never updated
OOS Orders:None
Overview
Company profile from FMCSA Census File
USDOT
45,597
Status
ACTIVE
Entity Type
Corporation
Operation
Interstate
Business Type
Motor Carrier
State
Phone
3026586524
Email
Power Units (MCS-150)
139
Drivers (MCS-150)
117
Safety Rating
C
MCS-150 Mileage
676,737
BOC-3 Agent
Physical Address
924 S HEALD ST, WILMINGTON, DE, 19801
Mailing Address
242 N JAMES ST SUITE 102, NEWPORT, DE, 19804
Contact
Phone: 3026586524
Email: [email protected]
Authority & Insurance
Operating authority, insurance filings, and BOC-3 status
Common Carrier — Active
Active Authority
1
Revoked / Inactive
0
Authority Types
1
Insurance Policies
2 active
Latest: May 23, 1997
BOC-3 Filing
On file
Operating Authority
fmcsa-authhistApr 5, 2026
| Authority Type | Docket # | Status | Original Date | Final Date |
|---|---|---|---|---|
| Common Carrier | MC-076472 | ACTIVE | Unknown | Jun 20, 2023 |
Active Insurance (2)
fmcsa-insurApr 5, 2026
| Insurer | Type | Policy # | Status | Effective | Cancel Date |
|---|---|---|---|---|---|
| SELECTIVE WAY INSURANCE COMPANY | CARGO | SW-3207682 | ON FILE | May 23, 1997 | Feb 2, 2007 |
| MARYLAND CASUALTY CO. | BIPD | CA29414715 | ON FILE | Apr 1, 1988 | Jul 23, 2008 |
Insurance History (2 canceled/expired)
fmcsa-inshist-allwithhistory
| Insurer | Type | Policy # | Status | Effective | Cancel Date |
|---|---|---|---|---|---|
| SELECTIVE INSURANCE COMPANY OF AMERICA | CARGO | SW-3207682 | REPLACED | Jan 13, 1995 | May 23, 1997 |
| PENNSYLVANIA MANUF. ASSOC. INS. | CARGO | 8187005532585 | CANCELLED | Apr 1, 1987 | Jan 13, 1995 |
Insurance Events Timeline
fmcsa-insur-hist
| Event | Insurer | Policy # | Type | Event Date | Cancel Date |
|---|---|---|---|---|---|
| CANCEL | MARYLAND CASUALTY CO. | CA29414715 | BIPD | Jul 23, 2008 | Jul 23, 2008 |
| CANCEL | SELECTIVE WAY INSURANCE COMPANY | SW-3207682 | CARGO | Feb 2, 2007 | Feb 2, 2007 |
| TERM/REPL | SELECTIVE INSURANCE COMPANY OF AMERICA | SW-3207682 | CARGO | May 23, 1997 | May 23, 1997 |
| CANCEL | PENNSYLVANIA MANUF. ASSOC. INS. | 8187005532585 | CARGO | Jan 13, 1995 | Jan 13, 1995 |
Authority Revocations
fmcsa-revocations
| Authority | Docket | Reason | Date |
|---|---|---|---|
| COMMON | MC-076472 | INVOLUNTARY REVOCATION | Unknown |
Authority Action History (4 events)
fmcsa-authhist-blob
| Docket | Authority Type | Original Action | Served Date | Disposition | Decided Date |
|---|---|---|---|---|---|
| MC076472 | COMMON | INVOLUNTARY REVOCATION | May 12, 2023 | DISCONTINUED REVOCATION | Jun 20, 2023 |
| MC076472 | MOTOR PROPERTY COMMON CARRIER | REINSTATED | Feb 15, 2012 | — | Unknown |
| MC076472 | COMMON | INVOLUNTARY REVOCATION | Jan 13, 1995 | DISCONTINUED REVOCATION | Unknown |
| MC076472 | MOTOR PROPERTY COMMON CARRIER | GRANTED | May 26, 1982 | REVOKED | Feb 12, 2007 |
Safety & Inspections
SMS BASIC scores, inspection history, and out-of-service rates
SMS BASIC Scores
Hours of Service
N/A
Higher percentile = worse safety performance relative to peers. Scores at or above 75% trigger FMCSA alerts.
Inspections
168
Violations
64
10 OOS
Vehicle OOS %
6.0%
Driver OOS %
3.0%
Power Units (MCS-150)
139
Drivers (MCS-150)
117
Crash Records
25
Inspection Activity (24 months)
Monthly inspection counts with OOS months highlighted. Hover bars for details.
May
Jun
Jul
3
Aug
6
Sep
7
Oct
8
Nov
7
Dec
4
Jan
3
Feb
5
Mar
5
Apr
5
May
3
Jun
4
Jul
5
Aug
3
Sep
3
Oct
4
Nov
6
Dec
1
Jan
10
Feb
7
Mar
1
Apr
Clean monthMonth with OOSBased on latest 100 of 168 inspection records
Inspection Activity Map
5 states • 168 inspections
None Low Medium High🚛 Home base
Violation Summary (64 violations from latest 100 of 168 inspections)
fmcsa-inspection-file
| Code | Description | # Violations | # OOS | Severity Wt | BASIC |
|---|---|---|---|---|---|
| FMCSR:392.2 | Operating a CMV while ill or fatigued | 5 | 0 | 8 | Unsafe Driving |
| FMCSR:393.95F | Emergency Equipment - Stopped vehicle warning devices missing or improper | 4 | 0 | — | Vehicle Maintenance |
| FMCSR:392.2-SLLEWA1 | Operating a CMV while ill or fatigued | 4 | 0 | 8 | Unsafe Driving |
| FMCSR:393.47E | Slack adjuster defective | 3 | 0 | 7 | Vehicle Maintenance |
| FMCSR:393.75A3-TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | 3 | 3 | — | Vehicle Maintenance |
| FMCSR:392.2-SLLEWA2 | Operating a CMV while ill or fatigued | 3 | 0 | 8 | Unsafe Driving |
| FMCSR:392.2-SLLS3 | Speeding 11-14 mph over limit | 2 | 0 | 7 | Unsafe Driving |
| FMCSR:392.2-SLLEWA3 | Operating a CMV while ill or fatigued | 2 | 0 | 8 | Unsafe Driving |
| FMCSR:392.2-SLLTL | Operating a CMV while ill or fatigued | 2 | 0 | 8 | Unsafe Driving |
| FMCSR:393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | 2 | 0 | — | Vehicle Maintenance |
| FMCSR:392.2-SLLS2 | Speeding 6-10 mph over limit | 1 | 0 | 5 | Unsafe Driving |
| FMCSR:393.48A-BLMACBD | Inoperative/defective brakes | 1 | 0 | 8 | Vehicle Maintenance |
| FMCSR:383.51A-SOUT | CDL disqualification - major offense | 1 | 1 | 10 | Driver Fitness |
| FMCSR:393.53B-B | Steering system components worn | 1 | 0 | 7 | Vehicle Maintenance |
| FMCSR:396.3A1-BOS | BRAKES OUT OF SERVICE: The number of defective brakes is equal to or greater than 20 percent of the service brakes on the vehicle or combination | 1 | 1 | — | Vehicle Maintenance |
| FMCSR:396.3A1-BALAC | Brake - Audible air leak from a brake chamber | 1 | 0 | — | Vehicle Maintenance |
| FMCSR:392.2WG | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:392.2-SLLTR | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:383.25A1 | Learner's Permit (CLP) - Is not accompanied by the holder of a valid CDL that is fully authorized to operate the CMV. | 1 | 1 | — | Driver Fitness |
| FMCSR:391.41APC | Medical (Certificate) - Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency | 1 | 1 | — | Driver Fitness |
| FMCSR:392.2-SLLIRP | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:392.2-SLLTCD | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:392.2-SLLSR | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:390.21TB2-DOT | 390.21TB2-DOT | 1 | 0 | — | General/Admin |
| FMCSR:393.30-B | Battery improperly secured | 1 | 0 | 3 | Vehicle Maintenance |
| FMCSR:392.2-SLL | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:393.75G-TAOW | Tires - All others weight carried exceeds tire load limit | 1 | 1 | — | Vehicle Maintenance |
| FMCSR:393.11A1-LLPL | Lighting devices/reflectors | 1 | 0 | 3 | Vehicle Maintenance |
| FMCSR:392.2SLTRS | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:391.41A-MCPC | Physical qualification - general | 1 | 0 | 7 | Driver Fitness |
| FMCSR:392.8-D | Driver - Failed to inspect /use emergency equipment | 1 | 0 | — | Unsafe Driving |
| FMCSR:393.41-BNPB | Brake - Inoperative or missing parking brake on power unit | 1 | 1 | — | Vehicle Maintenance |
| FMCSR:392.2-SLLEQP | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:396.5B-L | Fuel system leak | 1 | 0 | 7 | Vehicle Maintenance |
| FMCSR:383.71H | License (CDL) - CDL or CLP holder possesses a valid medical certificate but is not on file with the issuing state driver's licensing agency as required | 1 | 0 | — | Driver Fitness |
| FMCSR:393.78 | Windshield condition defective | 1 | 0 | 4 | Vehicle Maintenance |
| FMCSR:393.95A4-EEUS | Emergency Equipment - Fire Extinguishers - unsecured | 1 | 0 | — | Vehicle Maintenance |
| FMCSR:392.2-SLLEWG3 | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:393.75A4-PBME | Tires - Has a cut to the extent that the ply or belt material is exposed. | 1 | 0 | — | Vehicle Maintenance |
| FMCSR:392.2-SLLED | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:393.45(d) | Brake tubing/hoses inadequate | 1 | 0 | 7 | Vehicle Maintenance |
| FMCSR:393.45(b)(2) | Brake tubing/hoses inadequate | 1 | 0 | 7 | Vehicle Maintenance |
| FMCSR:390.21T(b) | 390.21T(b) | 1 | 0 | — | General/Admin |
| FMCSR:383.23(a)(2) | CDL - wrong class | 1 | 1 | 8 | Driver Fitness |
Peer Context
This carrier vs national averages. Lower is better for all metrics.
Vehicle OOS Rate
6.0%vs nat'l 23.4%
-17.4 pts below avg
Driver OOS Rate
3.0%vs nat'l 6.7%
-3.7 pts below avg
Violations / Inspection
0.64vs nat'l 1.80
-1.16 below avg
National averages: vehicle OOS 23.4%, driver OOS 6.7%, violations per inspection ~1.8. Based on FMCSA MCSAP program data.
Inspection History (168 inspections)
Showing 50 of 168
fmcsa-inspectionsApr 5, 2026
Inspection analytics
Monthly cadence, frequent stations, and violation mix
Inspections per month (24 mo)
119 total · 10.1% OOS
2024-042026-04
InspectionsOOS
Most frequent inspection stations
MIDDLETOWN DE11 · 2 OOS
NJ9 · 1 OOS
CECIL COUNTY8 · 2 OOS
DARLINGTON MD7 · 3 OOS
I-95 NORTHBOUND SCALE FACILITY5 · 1 OOS
Violations by BASIC category
Recent Crashes
25 crash records from FMCSA Crash File
Total Crashes
25
Fatalities
0
Injuries
11
Across 9 crashes
Tow-Aways
24
Crash History (25 records)
fmcsa-crash-fileApr 5, 2026
| Date | State | Severity | Fatalities | Injuries | City | Location | VIN | Carrier Name at Crash |
|---|---|---|---|---|---|---|---|---|
| Aug 27, 2025 | MD | TOW | 0 | 0 | ELKTON | OFF ROAD CRASH - WAWA REAR PARKING LOT - 1657 ELKT | ...415749 | DIAMOND MATERIALS LLC |
| Apr 24, 2025 | NJ | INJURY | 0 | 1 | ELK TWP | NJ 55 Secondary (Veteran`s Memorial Highway) | ...402345 | DIAMOND MATERIALS LLC |
| Feb 18, 2025 | NJ | TOW | 0 | 0 | HAMILTON TWP | I-295 | ...VG4704 | DIAMOND MATERIALS LLC |
| Feb 18, 2025 | NJ | INJURY | 0 | 1 | UPPER PITTSGROVE TWP | US 40 (Harding Highway) | ...413941 | DIAMOND MATERIALS LLC |
| Nov 12, 2024 | DE | INJURY | 0 | 1 | MIDDLETOWN | SR1 KOREAN WAR VETS MEM HWY | ...VJ0098 | DIAMOND MATERIALS LLC |
| Nov 12, 2024 | PA | INJURY | 0 | 1 | STRASBURG TOWNSHIP | ROUTE 0896 B | ...413939 | DIAMOND MATERIALS LLC |
| Aug 10, 2023 | NJ | TOW | 0 | 0 | PENNSVILLE TWP | I-295 | ...415073 | DIAMOND MATERIALS LLC |
| Feb 7, 2023 | NJ | TOW | 0 | 0 | SOUTH HARRISON TWP | GLOUCESTER COUNTY 694 | ...413947 | DIAMOND MATERIALS LLC |
| Aug 4, 2022 | DE | TOW | 0 | 0 | WOODSIDE | US13 S DUPONT HWY | ...413942 | DIAMOND MATERIALS LLC |
| Jul 15, 2021 | PA | TOW | 0 | 0 | WEST FALLOWFIELD TOWNSHIP | ROUTE 0041 S | ...738309 | DIAMOND MATERIALS LLC |
| Dec 2, 2020 | DE | TOW | 0 | 0 | — | — | — | — |
| Aug 17, 2020 | DE | INJURY | 0 | 2 | — | — | — | — |
| Aug 16, 2020 | DE | TOW | 0 | 0 | — | — | — | — |
| Aug 11, 2020 | NJ | TOW | 0 | 0 | — | — | — | — |
| Jun 15, 2020 | DE | TOW | 0 | 0 | — | — | — | — |
| Jan 10, 2020 | NJ | TOW | 0 | 0 | — | — | — | — |
| Sep 20, 2019 | PA | TOW | 0 | 0 | — | — | — | — |
| Mar 29, 2019 | PA | INJURY | 0 | 1 | — | — | — | — |
| Nov 13, 2018 | PA | INJURY | 0 | 1 | — | — | — | — |
| May 30, 2018 | DE | TOW | 0 | 0 | — | — | — | — |
| May 7, 2018 | DE | TOW | 0 | 0 | — | — | — | — |
| Nov 3, 2017 | NJ | INJURY | 0 | 2 | — | — | — | — |
| Oct 10, 2017 | MD | TOW | 0 | 0 | — | — | — | — |
| Mar 17, 2017 | MD | TOW | 0 | 0 | — | — | — | — |
| Nov 3, 2016 | DE | INJURY | 0 | 1 | — | — | — | — |
Compliance Timeline
30 events merged from authority, insurance, enforcement, OOS, crash, MCS-150, and safety rating records
Showing most recent 25 of 30 events
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StateAll entities in Delaware
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AuthorityMC-076472 Certificate
Common Carrier — Download free PDF
Crashes25 crash records
FMCSA Crash File
Inspections168 inspection records
Full inspection history
StationNJ
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StationCARNEYS POINT SCALE
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StationMIDDLETOWN DE
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BOC-3 AgentAMERICAN TRUCKING ASSOCIATIONS
Process agent on file
InsurerSELECTIVE WAY INSURANCE COMPANY
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Refresh dataLast updated: Apr 5, 2026