Diamond Plus Transportation Inc

USDOT activeAuthority activeCarrier · Interstate

USDOT2574313
MC900164
LocationWalnut, CA
Phone(626) 818-8998
Fleet14 power units · 14 drivers

Diamond Plus Transportation Inc (USDOT 2574313, MC-900164) is an interstate motor carrier based in Walnut, California with 14 power units and 14 drivers reported to FMCSA. Its USDOT number and operating authority are active. FMCSA records list 65 roadside inspections in the last 24 months.

Verification snapshot · FMCSA data as of Nov 11, 2026

Operating authorityActive · MC-900164Carrier Liability insurance$750,000 on fileRequired: $750,000 · as of May 2026 Safety ratingNot rated65 inspections in 24 months Out-of-service ordersNone on fileFMCSA out-of-service orders file Registration (MCS-150)Updated Jan 30, 20269 months ago Process agent (BOC-3)On fileProcess Agent Service Company, Inc.

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Operating authority

Status from the FMCSA Company Census File, November 11, 2026

Docket	Authority type	Status
MC-900164	Contract carrier	Active

First granted on February 13, 2015 · see full authority history.

Insurance

FMCSA legacy licensing records (last updated May 2026); filings may have changed since

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

Filings on file

Type	Insurer	Coverage	Effective
Liability (BIPD) BMC-91X	Spinnaker Specialty Insurance Company	$750,000	Jan 30, 2026

Insurance history: 11 past filings

Type	Insurer	Effective	Ended	Reason
Liability (BIPD)	Southlake Specialty Insurance Company	Jan 30, 2025	Jan 30, 2026	Cancel
Liability (BIPD)	Southlake Specialty Insurance Company	Jan 30, 2024	Jan 30, 2025	Cancel
Liability (BIPD)	Southlake Specialty Insurance Company	Jan 30, 2023	Jan 30, 2024	Cancel
Liability (BIPD)	United Specialty Insurance Company	Jan 30, 2022	Jan 30, 2023	Replaced
Liability (BIPD)	United Specialty Insurance Company	Jan 30, 2021	Jan 30, 2022	Replaced
Liability (BIPD)	United Specialty Insurance Company	Jan 30, 2020	Jan 30, 2021	Replaced
Liability (BIPD)	United Specialty Insurance Company	Jan 30, 2019	Jan 30, 2020	Cancel
Liability (BIPD)	United Specialty Insurance Company	Jan 30, 2018	Jan 30, 2019	Replaced
Liability (BIPD)	Wesco Insurance Company	Jan 30, 2017	Jan 30, 2018	Cancel
Liability (BIPD)	Wesco Insurance Company	Jan 30, 2016	Jan 30, 2017	Cancel
Liability (BIPD)	Castlepoint National Insurance Co	Jan 30, 2015	Jan 30, 2016	Cancel

Process agent (BOC-3)

Process Agent Service Company, Inc., Sioux Falls, SD

Inspections and crashes

Last 24 months · FMCSA Vehicle Inspection File and Crash File

65
Inspections: 9.8%
Driver out-of-service: 31.8%
Vehicle out-of-service: 1
Crashes

Inspected most often in: California (22), Arkansas (15), Alabama (5), Arizona (3), Georgia (3).

Most recent inspection on file: November 5, 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

January 5, 2026Involuntary revocation — Contract carrier authorityDiscontinued revocation on February 2, 2026
January 3, 2025Involuntary revocation — Contract carrier authorityDiscontinued revocation on January 22, 2025
January 3, 2024Involuntary revocation — Contract carrier authorityDiscontinued revocation on January 23, 2024
January 3, 2020Involuntary revocation — Contract carrier authorityDiscontinued revocation on January 29, 2020
January 3, 2018Involuntary revocation — Contract carrier authorityDiscontinued revocation on January 30, 2018
January 3, 2017Involuntary revocation — Contract carrier authorityDiscontinued revocation on February 3, 2017
January 4, 2016Involuntary revocation — Contract carrier authorityDiscontinued revocation on February 1, 2016
February 13, 2015Granted — Contract carrier authority

Fleet and operations

From the company’s own registration (Form MCS-150), updated January 30, 2026

Power units: 14
Trucks: 14
Tractors owned: 14
Trailers owned: 28
Drivers: 14
CDL drivers: 14
Interstate drivers: 11
Intrastate drivers: 3
Miles traveled: 1,866,508 (2025)
Classification: Authorized for hire
Hazardous materials: No
USDOT registered: January 23, 2015
Address: 20510 Bind Court, Walnut, CA 91789
Phone (registered with FMCSA): (626) 818-8998

Cargo carried

General freight

Key facts

USDOT number 2574313 was registered on January 23, 2015.
Operating authority MC-900164 was first granted on February 13, 2015.
The company last updated its FMCSA registration (Form MCS-150) on January 30, 2026.
It reported 1,866,508 vehicle miles traveled in 2025.
One insurance filing is on file in FMCSA’s legacy licensing records (as of May 2026), including Liability (BIPD) coverage with Spinnaker Specialty Insurance Company.
It had 65 roadside inspections in the last 24 months; 27 inspections recorded no violations.
FMCSA records list 1 reportable crash in the last 24 months.
Its process agent filing (BOC-3) is with Process Agent Service Company, Inc..

Other carriers in Walnut, CA

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