How to Check Carrier Authority: A Step-by-Step Guide for Freight Brokers (2026)

To check carrier authority, look up the carrier's USDOT number on CarrierOwl or FMCSA's SAFER system. Verify their operating authority status is "Active," confirm insurance coverage meets federal minimums, and review their safety record. The whole process takes under 2 minutes with the right tools — and it can save you from costly legal liability, fraud, and regulatory fines.

Whether you are a new freight broker setting up your first loads or a seasoned logistics professional tightening your carrier vetting process, this guide walks you through every step of checking carrier authority in 2026. We cover what carrier authority actually is, why it matters, how to verify it, and the red flags that should stop you from tendering a load.

What Is Carrier Authority?

Carrier authority — formally known as operating authority — is the legal permission granted by the Federal Motor Carrier Safety Administration (FMCSA) that allows a company to operate as a motor carrier, freight broker, or freight forwarder in interstate commerce. Without active operating authority, a company cannot legally transport regulated commodities across state lines.

Types of Operating Authority

The FMCSA issues several types of operating authority, each with its own scope:

• Common Carrier Authority (MC Number): Authorizes a motor carrier to transport property for hire on behalf of the general public. This is the most common type for trucking companies hauling general freight.
• Contract Carrier Authority: Allows a carrier to transport property under specific contracts with individual shippers, rather than serving the general public.
• Broker Authority: Permits a company to arrange transportation of freight without actually moving it themselves. If you are reading this guide, you likely hold broker authority.
• Freight Forwarder Authority: Authorizes a company to assemble and consolidate shipments and assume responsibility for transportation from origin to destination.

USDOT Number vs. MC Number

One of the most common points of confusion is the difference between a USDOT number and an MC number. They serve different purposes:

• A USDOT number is a registration number that identifies a carrier for safety monitoring, inspections, compliance reviews, and crash investigations. Every commercial motor vehicle operator that crosses state lines or carries hazardous materials must have a USDOT number.
• An MC number (Motor Carrier number) specifically grants operating authority — the legal right to transport freight for compensation. Not all USDOT-registered carriers have MC numbers, and not all need one.

It is critical to understand that a USDOT number alone does not mean a carrier is authorized to haul your freight. You must verify the operating authority status separately.

Additionally, the FMCSA has been gradually transitioning toward a USDOT-only identification framework through its MOTUS system, which aims to modernize and streamline the registration and authority process. Over time, the MC number is expected to be phased out in favor of using the USDOT number as the single identifier for carriers. For now, both numbers remain in use, and brokers should be prepared to look up carriers using either one.

Why Checking Carrier Authority Matters

Skipping the authority check might seem like a way to save time, but it exposes your brokerage to serious risk on multiple fronts.

Legal Liability and Negligent Hiring

When a freight broker tenders a load to a carrier without active authority, the broker takes on enormous legal exposure. If that carrier is involved in an accident, the broker can be sued for negligent hiring — the legal theory that the broker failed to exercise reasonable care in selecting a qualified carrier. Courts have awarded millions of dollars in negligent hiring cases against brokers who did not verify basic credentials like authority status and insurance.

Fraud Prevention

Inactive or revoked operating authority is one of the top red flags for chameleon carriers — companies that shut down after safety violations or crashes, then reopen under a new name and USDOT number. These carriers pose a direct threat to public safety and to your freight. By checking authority status, you can catch carriers that should not be on the road.

Insurance Verification

A carrier's authority status is directly linked to their insurance filing requirements. If a carrier's authority is revoked or inactive, their insurance coverage may also have lapsed. Confirming active authority is the first step in verifying that proper insurance is in place.

Regulatory Compliance

FMCSA regulations require freight brokers to use due diligence when selecting carriers. While the specific requirements for broker carrier selection have evolved, the expectation is clear: brokers must take reasonable steps to ensure the carriers they use are legally authorized, properly insured, and safe. Failing to do so can result in fines, enforcement actions, and loss of your own broker authority.

How to Check Carrier Authority: Step-by-Step

Follow these six steps to verify a carrier's authority before tendering any load. With practice, this process takes less than two minutes.

Step 1: Get the Carrier's USDOT or MC Number

Before you can check anything, you need the carrier's identification number. Ask for their USDOT number (preferred) or MC number when they first contact you or respond to a load posting. Legitimate carriers will provide this information without hesitation. If a carrier cannot or will not provide their USDOT number, that is an immediate red flag.

You can also find a carrier's USDOT number on their truck — federal regulations require it to be displayed on both sides of every commercial motor vehicle.

Step 2: Look Up the Carrier

Use one of the following tools to look up the carrier by their USDOT or MC number:

• CarrierOwl Free Search: Enter the USDOT or MC number in the search bar. CarrierOwl pulls data directly from FMCSA and presents it in a clean, easy-to-read format with all the critical details on one screen.
• FMCSA SAFER System: Go to the SAFER website, select "Company Snapshot," and enter the carrier's USDOT or MC number. The interface is functional but dated, and some information requires navigating to separate pages.

We recommend using CarrierOwl for a faster experience, but the FMCSA SAFER system is the official government source and is always free.

Step 3: Verify Operating Authority Status

Once you have pulled up the carrier's record, locate their operating authority status. This is the single most important field you need to check. Here is what each status means:

Status	Meaning	Can You Use This Carrier?
Authorized (Active)	The carrier has active operating authority and is legally permitted to transport freight for compensation.	Yes — proceed with additional checks
Not Authorized	The carrier does not have operating authority. They may only have a USDOT number for registration purposes.	No — do not tender freight
Revoked	The carrier's authority was taken away by the FMCSA, typically due to safety violations, insurance lapses, or failure to comply with regulations.	No — serious red flag
Pending	The carrier has applied for authority but it has not yet been granted. The application may still be in the protest period.	No — authority is not yet active
Out of Service	The FMCSA has issued an out-of-service order. The carrier is prohibited from operating until the order is lifted.	No — cannot legally operate

The only acceptable status is "Authorized" (Active). Any other status means you should not use that carrier. Period.

Step 4: Check Insurance Coverage

After confirming active authority, verify that the carrier has adequate insurance on file. FMCSA requires minimum insurance levels based on the type of freight being hauled:

Cargo Type	Minimum Insurance Required
General freight (non-hazmat)	$750,000
Household goods	$750,000
Hazardous materials (general)	$1,000,000
Hazmat: Oil, hazardous waste, explosives	$5,000,000

Look for an active BMC-91X (surety bond or trust fund) or BMC-82 (certificate of insurance) filing. These filings confirm that the carrier's insurance provider has reported coverage to the FMCSA. If these filings are missing or show a "cancelled" status, the carrier may not have valid insurance — even if their authority is technically active.

Keep in mind that many shippers and brokerages require insurance well above the federal minimums. It is common to require $1 million in auto liability and $100,000 in cargo insurance as a baseline.

Step 5: Review Safety Data

Once authority and insurance are confirmed, take a few moments to review the carrier's safety record. Key data points to examine include:

• BASIC Scores: The FMCSA's Behavior Analysis and Safety Improvement Categories (BASICs) measure carrier performance in seven areas including unsafe driving, crash indicator, hours-of-service compliance, vehicle maintenance, and controlled substances. Higher percentile scores indicate worse performance relative to peer carriers.
• Inspection History: Look at the carrier's recent inspection results. A high out-of-service rate for vehicles or drivers suggests maintenance or compliance problems.
• Crash Records: Review any reported crashes. While crashes alone do not determine fault, patterns of crashes can indicate systemic safety issues.
• Compliance Reviews: Check whether the carrier has undergone FMCSA compliance reviews and what the outcomes were. Ratings of "Unsatisfactory" or "Conditional" should give you pause.

For a detailed breakdown of how to interpret BASIC scores, see our guide: Understanding FMCSA BASIC Scores.

Step 6: Document Your Vetting

This step is easy to overlook but critically important. Keep a record of every carrier vetting you perform. Your documentation should include:

• The date you checked the carrier's authority and insurance
• The carrier's USDOT number, MC number, and legal entity name
• A screenshot or printout of their authority status and insurance filings
• Any safety data you reviewed (BASIC scores, inspection results)
• The name of the person in your organization who performed the check

This documentation is your primary defense in a negligent hiring claim. If a carrier you vetted is later involved in an incident, your records prove that you performed due diligence at the time of hiring. Without documentation, you will have a difficult time defending your selection process in court.

Red Flags When Checking Carrier Authority

Even after confirming that a carrier has active authority, certain patterns should raise your alarm. Experienced brokers know to watch for these warning signs:

• Recently issued authority (less than 90 days old): While every carrier starts somewhere, brand-new authority is the hallmark of a chameleon carrier — a company that was shut down for safety violations and reopened under a new identity. Cross-reference the carrier's address and principals against recently deactivated carriers.
• Authority recently reinstated after revocation: If a carrier had their authority revoked and then reinstated, investigate why. The revocation may have been for insurance lapses, safety violations, or failure to maintain a process agent. The reinstatement does not erase the underlying issues.
• Mismatched physical address: A carrier registered in one state but with all their trucks and drivers in a different state may be using a shell address. While there are legitimate reasons for this (such as corporate headquarters vs. terminal locations), it warrants further investigation.
• No BASIC scores despite claiming years of experience: If a carrier says they have been operating for five years but has no BASIC scores, no inspections, and no safety data on file, something does not add up. They may be a new entity operating under a recently acquired USDOT number.
• Insurance recently re-filed after a lapse: Check the effective dates on insurance filings. If there is a gap between the cancellation of a previous policy and the filing of a new one, the carrier was operating without insurance during that period — which is a federal violation.
• Unusually low rates: While not a direct authority issue, carriers offering rates significantly below market may be desperate for freight because reputable brokers have already flagged them. Cheap rates combined with any of the above red flags should be a dealbreaker.

Pro Tip: If you identify a suspected chameleon carrier, report them to the FMCSA. These carriers endanger everyone on the road, and the FMCSA relies on industry reports to identify and shut them down.

USDOT Number vs MC Number: What's the Difference?

We touched on this above, but the distinction between USDOT and MC numbers is important enough to explore in more detail. Many new brokers confuse these two identifiers, and the FMCSA's ongoing system changes make it even more important to understand.

Feature	USDOT Number	MC Number
Purpose	Identifies the carrier for safety oversight and registration	Grants legal operating authority to haul freight for compensation
Who needs it	All commercial motor vehicle operators in interstate commerce	Motor carriers, brokers, and freight forwarders operating for hire
Required for	Inspections, compliance reviews, crash investigations	Legal authority to offer transportation services
Format	Numeric (e.g., 1234567)	Numeric with MC prefix (e.g., MC-987654)
Future status	Will remain the primary identifier going forward	Being phased out under the FMCSA MOTUS modernization initiative

The MOTUS Transition

The FMCSA has been rolling out its MOTUS (Motor Carrier Management Information System) platform to replace legacy registration systems. As part of this transition, the agency is moving toward using the USDOT number as the sole identifier for carriers, effectively phasing out the MC number over time.

What does this mean for brokers? In practical terms:

• Start using USDOT numbers as your primary lookup. While MC numbers still work today, building your processes around USDOT numbers will future-proof your workflow.
• Update your carrier packets and onboarding forms to request the USDOT number as the primary identifier, with MC number as secondary or optional.
• Ensure your TMS and vetting tools support USDOT-based lookups. Most modern tools, including CarrierOwl, already support both.

Tools for Checking Carrier Authority

Several tools are available for verifying carrier authority, ranging from free government databases to paid subscription platforms. Here is a comparison of the most popular options:

CarrierOwl

CarrierOwl is a free carrier lookup tool built for modern freight brokers. It indexes over 2 million carriers from FMCSA data and presents authority status, insurance filings, safety scores, and contact information in a clean, fast interface.

• Price: Free
• Pros: Modern UI, fast search, all critical data on one page, updated regularly from FMCSA sources, no account required for basic lookups
• Cons: Newer platform, still building out advanced monitoring features
• Best for: Brokers who want a quick, reliable authority check without paying for a subscription

FMCSA SAFER System

The FMCSA SAFER (Safety and Fitness Electronic Records) system is the official government database. It is the authoritative source for carrier registration, authority, and insurance data.

• Price: Free
• Pros: Official source of record, always up to date, comprehensive data
• Cons: Dated user interface, slow page loads, data spread across multiple pages, no batch lookup capability
• Best for: Final verification and situations where you need the official government record

Carrier411

Carrier411 is a paid carrier monitoring and vetting platform that has been in the industry for years. It offers ongoing monitoring, alerts, and integration with popular TMS platforms.

• Price: Starting around $100/month
• Pros: Comprehensive monitoring, automated alerts for authority and insurance changes, industry reputation data
• Cons: Monthly subscription cost, interface can feel cluttered, some features overlap with free alternatives
• Best for: Mid-to-large brokerages that need continuous carrier monitoring at scale

For a detailed comparison of Carrier411 and other options, see our article on Carrier411 Alternatives.

Highway

Highway is an enterprise-grade carrier identity and vetting platform focused on fraud prevention and carrier identity verification.

• Price: Enterprise pricing (contact for quote)
• Pros: Advanced fraud detection, identity verification, real-time monitoring, strong API integrations
• Cons: Enterprise pricing not suitable for small brokerages, may be more than a small operation needs
• Best for: Large brokerages and 3PLs that need advanced fraud prevention and automated vetting workflows

The right tool depends on your brokerage's size, volume, and budget. For many brokers, starting with CarrierOwl's free search and supplementing with FMCSA SAFER for official verification is a practical and cost-effective approach. As your brokerage grows, you can layer on paid tools for continuous monitoring and automation.

Checking Authority for Different Carrier Types

The authority verification process works the same way regardless of carrier type, but there are a few nuances to be aware of:

• Household goods carriers have additional requirements including tariff filing and arbitration program participation. Check for these beyond standard authority verification.
• Hazmat carriers must carry significantly higher insurance limits and have proper hazmat endorsements. Verify both the authority and the specific hazmat registration.
• Intermodal carriers that handle containers from rail or ocean may have multiple authority types. Confirm the specific authority that covers the transportation you are arranging.

For a full breakdown of the carrier vetting process beyond authority checks, see our comprehensive guide on carrier regulations by state.

How Often Should You Check Carrier Authority?

Best practices for authority verification frequency depend on your relationship with the carrier:

• New carriers: Check authority, insurance, and safety data before the first load. No exceptions.
• Active carriers (used regularly): Re-verify at least every 90 days. Authority and insurance status can change at any time.
• Inactive carriers (not used in 6+ months): Treat them as new carriers and perform a full re-verification before tendering the next load.
• Automated monitoring: If you use a tool with continuous monitoring (such as Carrier411 or Highway), you will receive alerts when a carrier's status changes. This is the gold standard for compliance.

Final Thoughts

Checking carrier authority is one of the most fundamental responsibilities of a freight broker. It takes less than two minutes, costs nothing when you use free tools like CarrierOwl or FMCSA SAFER, and protects you from legal liability, fraud, and regulatory penalties. Make it a non-negotiable part of your carrier vetting process.

Build the habit of checking authority on every new carrier, re-verifying regularly on existing carriers, and documenting every check you perform. When you combine authority verification with insurance checks and safety score reviews, you create a defensible vetting process that protects your brokerage, your shippers, and the public.

Ready to check a carrier right now? Search for any carrier on CarrierOwl — it is free, fast, and built for freight brokers who value compliance.