Carrier Compliance Knowledge Base

FMCSA & Transportation Compliance Guides

Clear, authoritative guides on commercial motor carrier registration, operating authority, mandatory insurance filings, and carrier due diligence.

Quick Verification Lookups:

Registration & Numbers

3 articles

Authorities & Filings

8 articles
Authorities & Filings 13 min read

What Is an MC Number? Complete FMCSA Operating Authority Guide

An MC number is a federal operating authority identifier associated with certain types of interstate transportation authority regulated by the FMCSA. Learn how MC authority works, who needs it, how to verify it, and 2026 Motus updates.

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Authorities & Filings 12 min read

BMC-84 vs BMC-85: Broker Bond & Trust Requirements Explained

Compare BMC-84 surety bonds vs BMC-85 trust fund agreements for freight brokers. Learn about the $75,000 requirement, 2026 FMCSA Motus rules, and broker verification.

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Authorities & Filings 11 min read

What Is a BOC-3 Filing? Complete FMCSA Process Agent Guide

Understand what a BOC-3 process agent filing is, who needs it, blanket 50-state coverage, why it is required for operating authority, and how to verify it.

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Authorities & Filings 5 min read

How to Check Carrier Operating Authority & Status

Learn how to inspect FMCSA Licensing & Insurance records to confirm whether a motor carrier or broker possesses active, lawful operating authority.

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Authorities & Filings 13 min read

FMCSA Insurance Requirements: BIPD, Cargo & Broker Financial Responsibility

Understand federal FMCSA insurance requirements under 49 CFR Part 387, including BIPD liability minimums ($750K-$5M), cargo rules, broker financial responsibility, and form filings.

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Authorities & Filings 13 min read

FMCSA Insurance Requirements: BIPD, Cargo & Broker Financial Responsibility

Understand federal FMCSA insurance requirements under 49 CFR Part 387, including BIPD liability minimums ($750K-$5M), cargo rules, broker financial responsibility, and form filings.

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Authorities & Filings 5 min read

How Does Motor Carrier Authority Work? Legal Framework

An overview of the legal framework governing commercial motor carrier authority, 49 U.S.C. statutes, and federal filing requirements.

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Authorities & Filings 5 min read

What Is FMCSA Operating Authority? Complete Guide

Detailed breakdown of FMCSA operating authority, certificate vs. permit requirements, and common compliance rules for commercial logistics.

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Safety & Compliance

3 articles

Due Diligence

4 articles

Transportation Compliance & Verification FAQs

What is the difference between a USDOT number and an MC number?

A USDOT number is a safety registration identifier required for all commercial motor vehicles in interstate commerce to track inspections and crash data. An MC (Motor Carrier) docket number represents operating authority, granting commercial permission to transport regulated cargo across state lines for hire or operate as a freight broker.

What does Active Authority vs Inactive or Out of Service mean?

Active Authority (such as "Authorized for Property") confirms that the company is legally authorized to transport freight or broker loads with required insurance on file. Inactive or Revoked authority means the entity cannot legally move for-hire freight. An Out-of-Service order prohibits the carrier from operating commercial vehicles due to safety or administrative violations.

What is the difference between a freight broker, a motor carrier, and a freight forwarder?

A motor carrier physically transports freight with commercial power units and holds BMC-91X primary liability insurance. A freight broker arranges transportation without owning trucks and maintains a \$75,000 BMC-84 surety bond. A freight forwarder consolidates shipments, issues bills of lading, assumes carrier cargo liability, and holds Form BMC-34 cargo insurance.

What are the Form BMC-91X and Form BMC-84 filing requirements?

Form BMC-91X is the official certificate of public liability insurance (\$750,000 to \$5,000,000) filed with FMCSA for motor carriers. Form BMC-84 is the \$75,000 surety bond (or BMC-85 trust fund) required for licensed property freight brokers to guarantee carrier payments under 49 U.S.C. 13906.

How do I check a trucking company or verify a freight broker before booking?

Always: 1) Query the USDOT or MC number in TransportTrace to confirm active operating status; 2) Confirm that insurance (BMC-91X) or broker bond (BMC-84) is currently on file without cancellation notices; 3) Review roadside inspection Out-of-Service rates; and 4) Verify registered physical address and corporate phone numbers to prevent fraudulent identity theft.