Trucking Terms Guide

Insurance / Documents

Additional Insured in trucking

Short answer: A party added to a policy for limited coverage rights under policy terms.

Plain-English explanation

An additional insured is a party — usually a broker, shipper, or customer — added to a carrier's insurance policy who receives some of the protections of that policy for covered claims. When a broker requires a carrier to name them as additional insured, it means the broker has coverage under the carrier's liability policy for certain losses connected to the carrier's operation.

Insurance terms should be matched to the policy, endorsement, certificate, limit, and exclusion language. A short definition cannot confirm coverage for a specific loss or load.

Why it matters in trucking

Many broker setup packets and some shipper contracts require the carrier to name them as additional insured on the primary liability policy. If the certificate of insurance does not show the additional insured endorsement, the broker's setup team will kick the packet back. Carriers need to contact their insurance agent to add the additional insured — it usually cannot be done at the certificate level alone.

Coverage questions are easier before dispatch than after a claim. If the load, trailer, cargo value, or operating status is unusual, clarify the wording early.

Example in real use

A broker's carrier setup form requires the carrier to name the broker company as additional insured on their primary liability policy. The carrier calls their agent, who adds the endorsement and issues a revised certificate showing the broker as additional insured. The carrier re-submits the updated COI and the setup proceeds.

Common mistakes or confusion

  • Trying to handwrite "additional insured" on a certificate without getting the actual endorsement from the insurer — a certificate alone does not create coverage.
  • Confusing additional insured with certificate holder — a certificate holder receives a copy of the certificate, an additional insured gets coverage.
  • Not checking whether a new broker's setup packet requires additional insured status before submitting the standard certificate on file.

Related terms

Certificate of Insurance A document summarizing insurance coverage for a broker, shipper, or customer. Loss Run A report showing a business's insurance claims history for a period. Certificate Holder A party listed to receive proof of insurance or notices as described on the certificate. Certificate of Insurance A document summarizing insurance coverage for a broker, shipper, or customer. Primary Liability Liability coverage for bodily injury or property damage caused by the truck in covered operations. Physical Damage Coverage for damage to the insured truck or trailer itself, subject to policy terms.

Related guides

Truck Insurance Terms is the best next place to keep learning this topic.

Sources and last updated

Insurance definitions are reviewed against FMCSA minimum coverage requirements and NAIC consumer insurance glossary. Coverage details should be confirmed against the actual policy. See the sources page.

Last updated: 2026-05-10