DBA: Knights Trucking
Extreme Materials Inc is an active interstate carrier based in Summerville, SC.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 15 | 0 | 0 |
| Tractors | 23 | 0 | 0 |
| Trailers | 30 | 0 | 0 |
| Total Power Units | 38 | ||
Distinct vehicles · 24 mo
vs 38 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 58% | 87% | Around peer average |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 77% | 88% | Worse than most peers |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 0 | — | 6.67% |
| Vehicle | 0 | 7 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jan 1, 2026 | 0 | 1 | 1 | 1 |
| Apr 1, 2025 | 0 | 0 | 1 | 1 |
| Jul 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 27 | 10 | 9 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 18, 2026 | SC | STRAIGHT TRUCK | 0 | 0 |
| Mar 17, 2026 | SC | TRUCK TRACTOR | 0 | 0 |
| Mar 17, 2026 | SC | STRAIGHT TRUCK | 0 | 0 |
| Mar 5, 2026 | SC | TRUCK TRACTOR | 1 | 0 |
| Mar 3, 2026 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 4 | 0.21 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 13 | 7.39 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 2 states. Top state SC accounts for 99% of activity. Activity outside home state (SC): 1%.
| Unsafe Driving | 4 | 0 | 0 |
| SC |
| STRAIGHT TRUCK |
| 0 |
| 0 |
| Mar 2, 2026 | SC | STRAIGHT TRUCK | 0 | 0 |
| Feb 26, 2026 | SC | TRUCK TRACTOR | 0 | 0 |
| Feb 24, 2026 | SC | STRAIGHT TRUCK | 0 | 0 |
| Feb 24, 2026 | SC | TRUCK TRACTOR | 0 | 0 |
| Feb 20, 2026 | SC | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 5, 2026 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| Oct 2, 2025 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Oct 2, 2025 | 3939ALSLIWR | Lighting - Stop lamps - Both inoperative when required to be on | Vehicle Maintenance | Yes |
| Sep 29, 2025 | 3922SLLLR | State/Local Laws - Lane restriction violation | Unsafe Driving | — |
| Sep 2, 2025 | 393100BC | Cargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Vehicle Maintenance | Yes |
| Sep 2, 2025 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| Sep 2, 2025 | 3939AHLLH | Lighting - Headlamp(s) fail to operate on low and high beam | Vehicle Maintenance | — |
| Sep 2, 2025 | 3939ALCL | Lighting - Clearance lamp(s) inoperative | Vehicle Maintenance | — |
| Sep 2, 2025 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Sep 2, 2025 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |