Trailer interchange insurance
Trailer interchange covers damage to a trailer you pull but do not own, when you are running it under a written interchange agreement.
The practical question is not what it is. It is when a broker or an intermodal pool will refuse to load you without it — and the answer is: the moment you sign an interchange agreement, which is more often than most carriers expect.
When you will actually need it
These are the four situations that put a trailer you do not own behind your tractor. Each one normally comes with an interchange agreement, and the agreement normally specifies a coverage minimum.
- Power-only. The entire model is pulling somebody else's trailer. Great work — no trailer note, no trailer maintenance — and it is unavailable to you without this coverage.
- Intermodal and drayage. Container chassis under a UIIA agreement. Standard requirement, non-negotiable.
- Broker drop trailers. Increasingly common as brokers build their own trailer pools to offer drop-and-hook.
- Pulling for another carrier. Interlining, overflow work, or helping out a fleet you know.
Notice what these have in common: they are all the higher-efficiency, drop-and-hook side of the business. Not carrying interchange does not just create risk — it closes off the freight where you spend the least time waiting.
Trailer interchange vs non-owned trailer
| Trailer interchange | Non-owned trailer | |
|---|---|---|
| Trigger | A written interchange agreement | Use of a trailer you do not own |
| Typical use | UIIA, intermodal, carrier-to-carrier | Broker drop trailers, informal arrangements |
| Named in contracts? | Often required by name | Sometimes accepted instead |
| Covers the freight? | No | No |
Neither one covers what is inside the trailer. That is cargo insurance, and it is a separate line.
What to check before you sign the interchange agreement
- The required limit. It is written into the agreement. Signing is agreeing to it, and a certificate showing less will be rejected at the gate.
- Who is responsible for pre-existing damage. Inspect and photograph the trailer before you hook. Every tire, every light, every panel. This takes four minutes and settles arguments that otherwise cost thousands.
- Whether coverage applies while the trailer is dropped. Many losses happen to a trailer sitting in a yard, not one being towed.
- Who the certificate holder must be. Getting this wrong means the certificate is technically valid and practically useless.
Her own advice on this predates the site by four years, and it is still the right frame: the coverage costs money, and not having it costs opportunities.
Don't buy insurance just to activate your authority.
Find out before the gate does
If you are moving into power-only, intermodal or drop-trailer work, this is a short conversation that prevents a wasted trip.
Insurance is offered through Shay Denise, a licensed property and casualty producer. Coverage is subject to the terms, conditions and exclusions of the policy actually issued. Nothing on this page is a binder, a quote, or an offer of coverage.
Required by contract, not by regulation
No federal rule makes you insure a trailer you pull but do not own. The obligation comes from the interchange agreement you sign. For contrast, here is what federal law does require of the same truck.
For-hire carriers hauling non-hazardous property in vehicles with a GVWR of 10,001 lb or more must carry at least $750,000 in public liability coverage.
Commonly got wrong: Part 387 was last amended 91 FR 45660, 21 Jul 2026 — the $750,000 figure survived that amendment.
There is no federal cargo-insurance minimum and no federal cargo filing requirement for general freight. The federal cargo rules reach household goods carriers only.
Commonly got wrong: THE most misreported figure in the industry. §387.301T(b) is headed "Household goods motor carriers-cargo insurance" and its prohibition reaches only household goods carriers. §387.303T(c) is headed "Household goods motor carriers: Cargo liability". There is no $100,000 anywhere in Part 387 — that number is a broker and shipper CONTRACT norm, not a regulation. Important caveat to publish alongside it: carrier liability for loss or damage to general freight is a separate body of law (the Carmack Amendment, 49 U.S.C. 14706) and is unaffected. No insurance mandate does not mean no liability.
Trailer interchange questions
What is trailer interchange insurance?
Coverage for physical damage to a trailer you are pulling but do not own, when you are operating it under a written interchange agreement. It responds to damage to the trailer itself — not to the freight inside it, which is cargo insurance.
How is it different from non-owned trailer coverage?
Trailer interchange is triggered by a written interchange agreement — the document you sign when you take a trailer from a carrier or intermodal pool. Non-owned trailer physical damage responds more broadly to trailers you use but do not own, without requiring that agreement. Some brokers and interchange pools specifically require the interchange form by name, so which one you carry matters.
When will I be required to carry it?
Any time you sign an interchange agreement. In practice that means power-only work, intermodal and drayage under UIIA, pulling another carrier's trailer, and taking a broker's drop trailer. Most carriers discover the requirement at the gate, which is the worst moment to discover it.
What limit do I need?
Enough to replace the trailer. The interchange agreement usually specifies a minimum, commonly in the $20,000 to $50,000 range depending on the equipment. Read the agreement — the number is written in it, and signing it is agreeing to the number.
Does my physical damage policy already cover it?
No. Physical damage covers equipment you own or lease. A trailer belonging to someone else is a separate exposure and needs its own coverage line.
Is it expensive?
It is one of the smaller lines on a commercial trucking policy — usually far less than the cost of one lane you had to turn down for not having it.