Diamond Materials LLC Safety Record

DOT# 45597 · Wilmington, DE 19801 · 3026586524

A

Excellent safety record — scored 5/100 (lower is better). This carrier has one of the best inspection records on file.

Last inspected 03/13/2026

Grade based on FMCSA inspection, crash, and violation data. See methodology →

Safety Score Breakdown · 5/100 points

Vehicle OOS Rate 0/30 pts
Driver OOS Rate 0/20 pts
Crash Rate 5/30 pts
Fatal Crash Penalty 0/20 pts

Lower scores are better. How is this calculated?

According to FMCSA records, Diamond Materials LLC (DOT# 45597) in Wilmington, Delaware has 160 inspections on record with 88 violations and a 8.8% vehicle out-of-service rate and 6 crashes. Safety grade: A (excellent safety record). Active common authority.

160 Inspections
8.8% Vehicle OOS Rate
6 Crashes
139 Power Units

Out-of-Service Rates vs. National Average

An out-of-service (OOS) violation means a vehicle or driver was found unsafe to operate during a roadside inspection and was prohibited from continuing until the issue was corrected.

Vehicle OOS Rate 8.8%
Carrier: 8.8% (14 of 160) National: 23.2%
Driver OOS Rate 2.5%
Carrier: 2.5% (4 of 160) National: 6.4%
61% OOS rate better than 61% of carriers in Delaware
25% crash rate better than 25% of carriers in Delaware

Violation Categories · 88 total violations

FMCSA groups violations into Behavioral Analysis and Safety Improvement Categories (BASICs). Each violation found during a roadside inspection is classified into a category that reflects the type of safety risk.

88 total violations across 160 inspections
18 violations resulted in out-of-service orders (20%)
Vehicle Maintenance
37
Unsafe Driving
41
Driver Fitness
7
Hazardous Materials
1
Other
2

Inspection History · 100 records

FMCSA inspections range from Level 1 (full vehicle and driver examination) to Level 6 (enhanced motorcoach inspection). Level 1 is the most thorough; Levels 2 and 3 are walk-around and driver-only checks.

Inspected across 5 states: DE, MD, NJ, PA, US
Level 1: 31 (19%) Level 2: 80 (50%) Level 3: 49 (31%)
2 of 5 recent inspections had vehicle out-of-service violations
Date State Level Veh OOS Drv OOS
03/13/2026 MD 1 0 1
03/09/2026 MD 1 0 0
03/09/2026 MD 1 1 0
03/09/2026 MD 1 1 0
03/06/2026 MD 1 0 0
02/27/2026 NJ 2 0 0
02/27/2026 NJ 2 0 0
02/19/2026 NJ 2 0 0
02/19/2026 NJ 2 0 0
02/19/2026 NJ 2 0 0

Crash History · 6 records

4 injury crashes
27-AUG-25 most recent crash on record
Date State Fatalities Injuries Tow-Aways
27-AUG-25 MD 0 0 0
24-APR-25 NJ 0 1 0
18-FEB-25 NJ 0 0 0
18-FEB-25 NJ 0 1 0
12-NOV-24 DE 0 1 0
12-NOV-24 PA 0 1 0

Authority & Insurance

FMCSA operating authority permits interstate for-hire transportation. Carriers must maintain minimum insurance coverage levels to keep authority active. BIPD (bodily injury and property damage) insurance is required for all for-hire carriers.

MC/MX Number MC076472
Common Authority Active
Contract Authority N
Broker Authority N
BIPD Insurance Not On File
Cargo Insurance Not On File
Surety Bond Not On File
Type Insurer Coverage Effective
BIPD/Primary Arch Insurance Company $1,000 01/01/2012

Fleet Profile

Power units include trucks, tractors, and other commercial motor vehicles registered to the carrier. Driver count reflects the total number of drivers reported on the carrier's MCS-150 filing.

Power Units 139
Drivers 117
Fleet Size Large Fleet
Operation Type Interstate
Hazmat Yes
Operating Since 06/01/1974
MCS-150 Filed 20250702 1
Annual Mileage (MCS-150) 676,737
Address 924 S Heald St, Wilmington, DE 19801

Other Carriers in Wilmington, DE

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View all carriers in Wilmington →

Resources

What Is a CSA Score? Safety scoring explained How to Check a Trucking Company's Safety Record Lookup guide