What is a trucking carrier?
A trucking carrier is a company licensed by the FMCSA (in the US) to haul freight for other businesses, identified by a unique USDOT number and usually an MC operating authority number.
A trucking carrier is the company that physically moves freight, distinct from a broker (who arranges the move but doesn't own trucks) and a shipper (who owns the freight). To operate legally in interstate commerce, a US carrier needs a USDOT number — a unique six- to eight-digit registration with the Federal Motor Carrier Safety Administration — plus, for most for-hire freight, an MC (Motor Carrier) operating authority. Carriers range from one-truck owner-operators to fleets with thousands of power units; they carry one of several authority types (Common, Contract, or Broker authority for those that also broker loads). Active carriers maintain insurance filings (typically a BMC-91 cargo bond and CSL liability policy), pass DOT compliance reviews, and submit Safety Measurement System data that determines their public safety rating. When a broker or direct shipper books a carrier, they're verifying that authority is active, insurance is current, and the safety rating is Satisfactory or unrated — Conditional or Unsatisfactory ratings often disqualify a carrier from many shipper insurance requirements.
- What's the difference between a carrier and a broker?A carrier owns or leases the trucks and moves the freight. A broker doesn't move freight directly; brokers arrange a carrier to haul each load and collect a margin between what the shipper pays and what the carrier accepts. Many companies hold both authorities and act as a 'broker-carrier,' meaning they sometimes haul a load themselves and sometimes pass it to a partner carrier.
- How do I look up a carrier's authority and safety record?Every US carrier's authority status, safety rating, insurance, crash history, and inspection summary is public in the FMCSA SAFER (Safety and Fitness Electronic Records) system at safer.fmcsa.dot.gov. Search by USDOT number, MC number, or legal name. Yes Cap profiles surface the same data on each /c/<slug> page so you don't have to bounce between sites.
- Do all carriers need an MC number?Not all — intrastate-only carriers and private carriers (hauling only their own company's freight) often skip the MC number and operate on just the USDOT registration. Any for-hire interstate carrier of property requires the MC authority alongside the USDOT.