How to Choose a Freight Carrier

Choosing a carrier is not just about rate. A carrier who quotes the lowest rate but lacks proper authority, carries inadequate insurance, or hands off your load to another broker without disclosing it has created a liability problem that is worse than a higher rate. Here is what to verify before freight moves.

FMCSA operating authority

Every carrier who transports goods for compensation across state lines must have active operating authority issued by the Federal Motor Carrier Safety Administration (FMCSA). The carrier's authority is identified by their MC number (Motor Carrier number) and their DOT number.

Before tendering, verify that the carrier's authority is active through FMCSA's SAFER (Safety and Fitness Electronic Records) system at safer.fmcsa.dot.gov. An inactive or revoked authority means the carrier is operating illegally. Freight moved by an unauthorized carrier may not be covered by the carrier's insurance, creating an uninsured liability exposure for the shipper.

Freight brokers have separate authority — a brokerage license (formerly Form OP-1) — that allows them to arrange transportation but not to physically move freight. If you are hiring a broker, verify their brokerage authority. If you are hiring a carrier, verify their motor carrier authority.

Insurance requirements

The FMCSA requires minimum insurance levels for motor carriers:

Liability insurance: minimum coverage for bodily injury and property damage liability.
Cargo insurance: covers the shipper's freight against loss or damage.

These minimums represent the floor, not the appropriate level for all freight. High-value commodities require higher cargo insurance limits. Verify that the carrier's cargo insurance limit exceeds the value of your freight. Request a current certificate of insurance (COI) that names your company as an additional insured.

A carrier's liability limit in their tariff also governs what they owe on damage claims. If you are shipping freight worth more than the carrier's standard liability limit (typically calculated per pound or as a flat maximum), declare the value on the BOL and pay the declared value rate, or arrange separate cargo insurance for the difference.

FMCSA safety scores

FMCSA's Safety Measurement System (SMS) produces BASIC (Behavior Analysis and Safety Improvement Category) scores for carriers across seven safety categories: unsafe driving, hours of service compliance, driver fitness, controlled substances and alcohol, vehicle maintenance, hazardous materials compliance, and crash indicator.

High scores in these categories — particularly unsafe driving and crash indicator — are warning signs. Carriers in Alert status (score above the FMCSA intervention threshold) have significantly elevated safety risk relative to peers. SAFER provides SMS scores and inspection history. For high-value or sensitive freight, carrier safety history is worth reviewing before first tender.

References and lane experience

A carrier who runs your lane regularly — who has established relationships at origin facilities, knows the delivery appointment process at destination, and has drivers familiar with local routing — will perform more reliably than a carrier picking up the lane for the first time.

For contract freight relationships, ask for references from other shippers on the same or similar lanes. A carrier with a strong record on your specific lane is worth a modest rate premium over an unknown carrier at a lower rate.

Double brokering: what it is and how to avoid it

Double brokering occurs when a freight broker accepts a load from a shipper and then re-brokers it to another broker (rather than tendering directly to a carrier), without the shipper's knowledge or consent. The second broker then finds the carrier. The shipper has no visibility into who is actually moving their freight or whether that carrier meets the shipper's standards.

Double brokering creates real risks: the actual carrier may be unknown, unvetted, and may not meet insurance or authority requirements. If the carrier loses or damages freight, the chain of brokers complicates the claim. In some cases, shippers have paid a broker who then disappeared, leaving the carrier unpaid and creating a lien against the freight.

Reducing double brokering risk requires active verification:

Before dispatch, request the MC number and DOT number of the carrier who will physically move the freight.
Verify that MC number in SAFER — confirm the carrier is active and is a motor carrier (not just a broker).
Request the assigned driver's name and truck number before pickup.
If the entity invoicing you has a broker authority but the truck shows different carrier details, investigate before paying.

The Dock Optimizer platform, which powers load posting on this site, is designed to provide transparency into the carrier covering your load. Shippers can verify carrier identity through the platform before the truck is dispatched.

Red flags

A carrier who cannot provide their MC number or DOT number on request.
A rate that is significantly below market — sometimes a sign of a broker planning to re-broker to a lower-quality carrier to capture margin.
A carrier whose authority has been active for less than six months — newer carriers have limited operating history and safety records to evaluate.
A carrier who cannot name the driver or truck assigned to your load before pickup.
A broker who resists providing the actual carrier's identity before dispatch.