Trailer Interchange Certificates Get Rejected Over Wording, Not Limits

The limit is the part everyone checks and the part that rarely fails

Pull a chassis, a container, or a trailer that is not on your title and somebody wrote a contract making that equipment your problem while it is behind your truck. What surprises people is how the coverage gets verified. The equipment provider almost never argues about the dollar limit you carry. It reads the words printed next to that limit, and if those words are wrong the application stops there. Our trailer interchange coverage page explains what the coverage does. This is the narrower question of what the paperwork has to say.

Three wordings that pass and one that only sometimes does

The Intermodal Association of North America publishes the trailer interchange requirements equipment providers work from under the Uniform Intermodal Interchange and Facilities Access Agreement. The version last revised on April 1, 2026 names the acceptable descriptions outright. A certificate can say Trailer Interchange, or Trailer Interchange physical damage, or Non-owned physical damage. The phrase damage to non-owned automobiles in the insured's care, custody and/or control is also accepted.

Bailees coverage is the conditional one. It can be accepted, but only if it does not reference hired auto physical damage. That is one clause in a form most carriers never read, and it decides whether the file is approved or rejected. Canadian agents have their own route through the OPCF 27B and ASEF 27B endorsements.

Named perils are the quiet failure

The requirement is not just physical damage on somebody else's equipment. It has to reach comprehensive and collision, not only fire and theft. IANA calls out the CA23-13 endorsement by name and says it is not acceptable unless it covers comprehensive and collision in addition to fire and theft, with the endorsement itself indicating both. A form that answers only for fire and theft looks like coverage on a summary sheet and will not clear the check.

One more line catches people. If the policy limit is actual cash value rather than a stated dollar amount, that has to be noted on the certificate.

The auto policy has to be the right shape too

The same IANA instructions, in the agent quick reference revised May 14, 2026, set a general liability limit of $1 million per occurrence with no portion self-insured, and an auto liability combined single limit of $1 million. The auto policy also has to be marked ANY AUTO, SCHEDULED AND HIRED, or ALL OWNED AND HIRED. A policy marked ALL OWNED AUTO only, or SCHEDULED ONLY, is not accepted. Plenty of small fleets carry the right money on the wrong designation and never learn it until a terminal turns them away.

On top of that, the Truckers Uniform Intermodal Interchange Endorsement, form UIIE-1 or the CA 23-17 equivalent, has to be part of the auto liability policy. It is a hold harmless endorsement, and the certificate carries a box confirming it is attached.

Additional insured on the trailer interchange line, not just the auto

Equipment providers get named as additional insured, and the requirement is not uniform across the lines. The IANA list separates providers who need additional insured status on general liability from those who need additional insured or loss payee status specifically on trailer interchange. Steamship lines, chassis pools, and railroads sit on that second list, so an agent who added the provider to the auto policy and stopped has left the trailer interchange piece unendorsed. IANA also states that its office cannot waive the coverage or approve self-insurance, and that self-insurance cannot be shown on the online certificate. Only the equipment provider requiring it can grant that.

Federal rules cover the chassis condition, not the repair bill

The two systems answer different questions. Under 49 CFR 390.40T an intermodal equipment provider has to systematically inspect, repair, and maintain interchange equipment consistent with 49 CFR 396.3(a)(1), provide it in safe and proper operating condition, run a driver vehicle inspection report system under 49 CFR 396.11, and periodically inspect under 49 CFR 396.17. None of that decides who pays when a chassis gets bent. Federal rules govern condition. The interchange contract governs money, and that is where your intermodal coverage and motor truck cargo limits get read beside the trailer interchange line.

The renewal detail that ends coverage a day early

The interchange system expires a policy one minute after midnight on the day of the expiration date, not at the end of that day. Carriers read the date and assume they have the whole day. They do not. IANA also asks that a renewal carry an effective date concurrent with the expiring policy, so a policy expiring on the first renews effective the first, not the second. Section F.6 of the UIIA requires 30 days advance notice of cancellation, or 10 days for non payment.

Get a quote that clears the check

On intermodal and drop and hook work, what matters is whether the wording, the endorsements, and the additional insured list match what the equipment provider will actually accept. Get a truck insurance quote from an agency that only writes trucking. Call or text 423-264-4255, or start on our quote form, and we will walk the certificate line by line against your trailer interchange requirements.