Guides
Explanations of the FMCSA identifiers, safety programs, and datasets behind every carrier profile on CarrierPedia — including our own original analysis of the national carrier dataset.
- How to Look Up a USDOT Number
Where to find a carrier’s USDOT number and how to search it.
- USDOT Number vs MC Number: What Changed and What It Means for You
The difference between the two identifiers, and why USDOT is becoming primary.
- What the Five FMCSA BASICs Actually Measure
A plain-language breakdown of each Safety Measurement System category.
- How to Read an SMS Percentile
What a BASIC percentile means, and why CarrierPedia computes its own for property carriers.
- What an Out-of-Service Rate Says About a Carrier
How OOS rates are calculated and what counts as high or low.
- How to Check if a Carrier's Insurance Is on File
What "insurance on file" means and its limits as a verification step.
- Operating Authority: Active, Pending, Revoked — What Each Means
A guide to every FMCSA operating-authority status.
- MCS-150 Biennial Update: Who Must File and What Happens If You Don’t
The filing requirement behind the Census dataset this site is built on.
- How to Verify a Carrier Before Booking a Load
A broker checklist for vetting a carrier beyond a name and a phone number.
- New Entrant Safety Assurance Program Explained
What extra scrutiny new carriers face in their first 18 months.
- What a Safety Rating Is — and Why Most Carriers Don’t Have One
Compliance reviews vs. continuous BASIC monitoring.
- Hazmat Authority: What the HM Indicator Means
What it takes to haul hazardous materials under FMCSA rules.
- Interstate vs Intrastate Operation
Why the distinction matters for registration and jurisdiction.
- How FMCSA Crash Reporting Works — and Its Known Gaps
Where crash data comes from, and where it falls short.
- Reading an Inspection Report: Levels 1–6
What each roadside inspection level actually covers.
- Driver Out-of-Service Violations: the Most Common Causes
The violation categories that most often pull a driver off the road.
- Vehicle Maintenance Violations That Most Often Ground a Truck
The mechanical defects inspectors flag most.
- How to Correct Wrong Data in FMCSA Records (DataQs)
The official process for disputing or correcting an FMCSA record.
- Carrier vs Broker vs Freight Forwarder
Three different FMCSA registration types, explained.
- BOC-3 Process Agents Explained
The legal-service requirement behind every operating authority grant.
- BIPD Coverage Minimums: What’s Required
Federal minimum liability insurance requirements by cargo and vehicle type.
- How to Start a Trucking Company: the FMCSA Registration Path
The registration steps from USDOT number to operating authority.
- Owner-Operator vs Fleet: What the Census Data Shows
How single-truck and large-fleet carriers differ in the FMCSA data.
- Where US Trucking Capacity Actually Sits — State by State
Original analysis of active carrier and fleet distribution by state.
- The Safest and Least Safe States by Out-of-Service Rate
Original analysis ranking states by inspection outcomes.
- Fleet Size Distribution in US Trucking
Original analysis of how fleet sizes are actually distributed.
- How Many Trucking Companies Are There in the US, Really
Original analysis separating active carriers from registered-but-dormant ones.
- Cargo Specialization by State
Original analysis of which states concentrate in which cargo types.
- What Happens When a Carrier’s Authority Is Revoked
The process and consequences of an authority revocation.
- Understanding the FMCSA Data Sources Behind This Site
A tour of the datasets CarrierPedia is built on and how they fit together.