Extreme Materials Inc

Doing business as Knights Trucking

USDOT activeAuthority activeCarrier · Interstate
  • USDOT1905971
  • MC699110
  • LocationSummerville, SC
  • Phone(843) 821-7600
  • Fleet38 power units · 38 drivers

Extreme Materials Inc (USDOT 1905971, MC-699110) is an interstate motor carrier based in Summerville, South Carolina with 38 power units and 38 drivers reported to FMCSA. Its USDOT number and operating authority are active. FMCSA records list 98 roadside inspections in the last 24 months.

Verification snapshot · FMCSA data as of Nov 10, 2026

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Operating authority

Status from the FMCSA Company Census File, November 10, 2026

DocketAuthority typeStatus
MC-699110Motor Carrier of Property (except Household Goods)Active

First granted on February 3, 2012 · see full authority history.

Insurance

FMCSA licensing system (Motus), November 11, 2026

  • Liability (BIPD) required$750,000
  • Liability (BIPD) on file$1,000,000
  • Cargo insurance required / on fileNo / No
  • Bond required / on fileNo / No

Filings on file

TypeInsurerCoverageEffective
Liability (BIPD) BMC-91XZurich American Insurance Company$1,000,000Mar 1, 2017
Insurance history: 2 past filings
TypeInsurerEffectiveEndedReason
Liability (BIPD)Pennsylvania National Mutual Cas. Ins. Co.Jan 20, 2012Mar 1, 2017Replaced
Liability (BIPD)Pennsylvania National Mutual Cas. Ins. Co.May 11, 2010Nov 27, 2010Cancel

Process agent (BOC-3)

#1 A $20 Boc-3 Filing LLC, Denver, CO

Inspections and crashes

Last 24 months · FMCSA Vehicle Inspection File and Crash File

98
Inspections
14 with no violations
0.0%
Driver out-of-service
0 of 98 inspections
47.1%
Vehicle out-of-service
8 of 17 inspections
3
Crashes
0 fatal · 1 injury · 2 tow-away

Inspected most often in: South Carolina (96), Georgia (2).

Most recent inspection on file: November 6, 2026.

FMCSA safety rating: Not rated

Inspection and crash counts come from FMCSA records and are shown as reported. They are not a safety rating. A crash record does not mean the carrier was at fault. FMCSA has not rated a carrier unless a safety rating is listed. For FMCSA’s own data and its explanation, see the FMCSA SAFER Company Snapshot.

Out-of-service rates are calculated by CheckTrucking from inspection records (driver: levels I, II, III, VI; vehicle: levels I, II, V, VI). They are not FMCSA scores.

Authority history

FMCSA licensing records (Motus and legacy L&I) · migration-only status adjustments are not shown

  1. Involuntary revocation — Common carrier authorityDiscontinued revocation on November 22, 2023
  2. Granted — Common carrier authority
  3. Dismissed — Contract carrier authority

Fleet and operations

From the company’s own registration (Form MCS-150), updated February 10, 2025

Power units
38
Trucks
38
Tractors owned
23
Trucks owned
15
Trailers owned
30
Drivers
38
CDL drivers
38
Interstate drivers
23
Intrastate drivers
15
Miles traveled
2,143,000 (2025)
Classification
Authorized for hire
Hazardous materials
No
USDOT registered
June 23, 2009
Address
480 Hodge Road, Summerville, SC 29483
Phone (registered with FMCSA)
(843) 821-7600
Other active USDOT records at this address
1

Cargo carried

  • General freight
  • Building materials
  • Construction
  • Sand, rock, cement,

Key facts

  • USDOT number 1905971 was registered on June 23, 2009.
  • Operating authority MC-699110 was first granted on February 3, 2012.
  • The company last updated its FMCSA registration (Form MCS-150) on February 10, 2025.
  • It reported 2,143,000 vehicle miles traveled in 2025.
  • One insurance filing is on file, including Liability (BIPD) coverage with Zurich American Insurance Company.
  • It had 98 roadside inspections in the last 24 months; 14 inspections recorded no violations.
  • FMCSA records list 3 reportable crashes in the last 24 months.
  • Its process agent filing (BOC-3) is with #1 A $20 Boc-3 Filing LLC.

Other carriers in Summerville, SC

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