HaulerCheck · https://haulercheck.com/carrier/1905971-extreme-materials-inc/ · Checked 2026-10-19 11:37 UTC · Census and inspections Oct 18, 2026 · Authority and insurance: FMCSA Motus · Oct 18, 2026
EXTREME MATERIALS INC
Doing business as KNIGHTS TRUCKING
Review before booking · 1 signal
How risk signals workFacts from the FMCSA record that call for a closer look. They are not a finding of wrongdoing.
- Vehicle out-of-service rate well above the state average50.0% vs South Carolina average 30.3%.
No cargo cover filed with FMCSA
Green means the FMCSA record shows it. It does not confirm who you are talking to, or that a policy covers your specific load.
What to verify next
- Confirm authority and insurance on the official Motus record ↗. Safety record: SAFER ↗.
- Call back on the number on file, (843) 821-7600, not a number from an email or load board.
- Check that the MC number you were given is MC699110.
- Ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Insurance on file
Liability (BI&PD) pays for injury and damage to other people and property; it does not cover the freight. Cargo insurance covers the freight. FMCSA only requires cargo filings from household goods carriers and freight forwarders, so most carriers file none: ask for a cargo certificate that fits your load. No cargo cover filed with FMCSA.
| Type | Docket | Layer | Insurer | Coverage | Effective | Status |
|---|---|---|---|---|---|---|
| Liability (BI&PD) | MC699110 | Primary | ZURICH AMERICAN INSURANCE COMPANY Policy BAP 0081053 · BMC-91X | $1,000,000 | Mar 1, 2017 | Active |
Source: FMCSA Motus · Oct 18, 2026. Identical filings repeated in the FMCSA data are shown once; a filing listed under two dockets is one policy, not extra coverage. Coverage is the maximum amount filed with FMCSA, not the full policy.
Confirm current filings: Motus record ↗ and ask the insurer for a certificate naming you as holder.
Roadside inspections Oct 18, 2024 – Oct 18, 2026
8 of 16 · South Carolina avg 30.3%
0 of 100 · South Carolina avg 6.7%
10 most recent inspections
| Date | State | Level | Violations | Out of service |
|---|---|---|---|---|
| Oct 15, 2026 | SC | 3 | 2 | No |
| Oct 7, 2026 | SC | 3 | 0 | No |
| Oct 7, 2026 | SC | 3 | 1 | No |
| Oct 6, 2026 | SC | 2 | 3 | Yes |
| Sep 15, 2026 | SC | 3 | 3 | No |
| Aug 25, 2026 | SC | 1 | 0 | No |
| Aug 21, 2026 | SC | 3 | 1 | No |
| Aug 20, 2026 | SC | 3 | 1 | No |
| Aug 18, 2026 | SC | 3 | 1 | No |
| Jul 16, 2026 | SC | 3 | 1 | No |
How these rates are calculated
Period: Oct 18, 2024 – Oct 18, 2026. Vehicle rate = vehicle inspections with a vehicle out-of-service order ÷ vehicle inspections (levels 1, 2, 5 and 6). Driver rate uses levels 1, 2, 3 and 6. The South Carolina average covers 18,709 vehicle and 40,848 driver inspections of all South Carolina-based carriers in this period. It mixes every type of operation, so compare with care; rates based on a handful of inspections say little. FMCSA's own SMS measures are weighted differently: SMS profile ↗ · SAFER snapshot ↗
Violations in FMCSA's SMS last 24 months
43 violations counted in FMCSA's Safety Measurement System (SMS), 10 of them serious enough to put the driver or vehicle out of service.
Why is this different from the 135 violations above?
The inspections section's number counts every violation written on the inspection reports in our Oct 18, 2024 – Oct 18, 2026 window. The SMS count comes from FMCSA's own monthly SMS snapshot, which uses its own 24-month window and only the violations it scores. Both are FMCSA figures; they measure different things.
| Category (FMCSA BASIC) | Violations | Out of service | Share | South Carolina share |
|---|---|---|---|---|
| Vehicle Maintenance | 37 | 10 | 86.0% | 68.0% |
| Unsafe Driving | 6 | 0 | 14.0% | 13.4% |
10 most frequent violations
| Violation | Times | Out of service |
|---|---|---|
| Washers - Inoperative washing system. Windshield/ Glass/ Markings · Vehicle Maintenance · code 39378AWS | 5 | 0 |
| Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS Tires · Vehicle Maintenance · code 39375A3TAOL | 4 | 4 |
| State/Local Laws - Lane restriction violation Misc Violations · Unsafe Driving · code 3922SLLLR | 3 | 0 |
| Windshield / Windows - Tinting permits less than 70% of light transmittance Windshield/ Glass/ Markings · Vehicle Maintenance · code 39360D | 3 | 0 |
| Cargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV Improper Load Securement · Vehicle Maintenance · code 393100BC | 2 | 2 |
| State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g. safety official signal sign light lane marking other Dangerous Driving · Unsafe Driving · code 3922SLLTCD | 2 | 0 |
| Other - Any air leak not attributed to the brake or suspension system. Brakes All Others · Vehicle Maintenance · code 3963A1OAL | 2 | 0 |
| Lighting - Identification lamp(s) inoperative Clearance Identification Lamps/Other · Vehicle Maintenance · code 3939ALIL | 2 | 0 |
| Operating a CMV without documentation of a periodic inspection Inspection Reports · Vehicle Maintenance · code 39617CPI | 2 | 0 |
| Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination Brake Out Of Service · Vehicle Maintenance · code 3963A1BOS | 1 | 1 |
Source: FMCSA SMS violation file, inspections in the last 24 months, published Oct 18, 2026. "Share" is this company's mix of violations; the South Carolina column is the mix across all South Carolina-based carriers, so you can see which kinds of problems stand out. A high count partly reflects fleet size and how often trucks are inspected.
Crashes Oct 18, 2024 – Oct 18, 2026
2 most recent crashes
| Date | Location | Fatalities | Injuries |
|---|---|---|---|
| Feb 6, 2026 | Summerville, SC | 0 | 1 |
| Jun 26, 2025 | North Charleston, SC | 0 | 0 |
Reportable crashes do not imply the carrier was at fault.
Company details FMCSA census · Oct 18, 2026
| USDOT number | 1905971 |
|---|---|
| MC / docket | MC699110 |
| Legal name | EXTREME MATERIALS INC |
| DBA name | KNIGHTS TRUCKING |
| Operation | Interstate |
| Business type | — |
| Power units | 38 |
| Drivers | 38 |
| Annual mileage | 2,143,000 (2025) |
| Hazmat | No |
| Safety rating | Not rated (no compliance review on record) |
| USDOT number added | Jun 23, 2009 · 17 years ago |
| Last MCS-150 update | Feb 10, 2025 |
Cargo carried
General FreightBuilding MaterialsConstructionOtherSand, Rock, Cement,
Questions about EXTREME MATERIALS INC
What does EXTREME MATERIALS INC's operating authority allow?
MC699110: Motor carrier (may haul regulated property for hire).
Which information about EXTREME MATERIALS INC is old or missing?
FMCSA has not issued a safety rating, which means no compliance review is on record, not that the carrier is unsafe.
What should I verify before booking EXTREME MATERIALS INC?
Confirm the authority and insurance on the Motus record for USDOT 1905971. Call the company back on the phone number on file, (843) 821-7600, not a number from an email or load board message. Check that the MC number the dispatcher gave you matches MC699110, and ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Other companies using (843) 821-7600
A shared number is common for related companies, dispatch services and family businesses. It is not proof of fraud, but it is worth knowing which company you are dealing with.
1 company
| Company | Location | USDOT | Docket | Trucks | Authority |
|---|---|---|---|---|---|
| KRM FLEET LLC Carrier · DBA KNIGHT'S REDI-MIX |
Summerville, SC | 3517010 | MC1166012 | 114 | Active Current · Motus |
Other trucking companies in Summerville, SC →
Company details from the FMCSA Company Census File (Oct 18, 2026). Inspections and crashes from FMCSA MCMIS files. About our data · Report an error on this page (how corrections work).
Page generated 2026-10-19 11:37 UTC.