You pulled the container off the ramp Thursday afternoon, dropped it in your yard, and went home. Saturday night somebody backs into it. Monday morning the equipment provider sends you a repair invoice.
That container is not yours. Your physical damage policy covers your tractor and your trailers. So who pays?
You do, unless you have the right coverage. And whether your insurance helps comes down to a policy most carriers buy once, never look at again, and badly misunderstand: trailer interchange insurance.
Here’s the thing. Every carrier pulling boxes out of an intermodal ramp has signed something that moved responsibility for that equipment onto them. Most have never read it. We read them, so let’s break down what actually happens when you hook a chassis you don’t own.
Trailer Interchange Insurance Is Not the Same as Non-Owned Trailer Coverage
These two get used like they mean the same thing. They don’t, and the difference is where carriers get hurt.
Non-owned trailer physical damage is an endorsement a lot of carriers already have. On many forms, it responds while a trailer you don’t own is hooked to a covered power unit. Unhook it and the coverage can stop right there.
Trailer interchange works off a contract instead. When there’s a signed interchange agreement in place, coverage generally follows the equipment while it’s in your possession. Attached, parked at a customer’s dock, or sitting in your yard over a long weekend.
Now think about what drayage actually is. It’s drop and hook. The box sits. That’s the entire business model.
Real-World Example
A carrier running containers out of an intermodal terminal drops a loaded container in their yard Friday for a Monday delivery. Over the weekend the chassis gets sideswiped and the container door is bent in.
Their non-owned trailer endorsement was written to respond while the unit was attached to a covered power unit. The tractor went home Friday night. The box sat alone for about 60 hours.
Repair invoice from the equipment provider. No trailer interchange coverage on file. That bill is out of pocket, and the carrier may still owe per diem while the equipment is out of service.
Some carriers carry both coverages for exactly this reason. Whether you need both depends on how your forms are written, and nobody can tell you that without reading your actual policy.
UIIA Trailer Interchange Insurance Requirements: What You Actually Signed
If you pull equipment from an intermodal ramp, you’re almost certainly operating under the Uniform Intermodal Interchange and Facilities Access Agreement (UIIA). It’s administered by the Intermodal Association of North America (IANA), and it’s the master contract between motor carriers and equipment providers.
Per IANA’s published insurance requirements, here’s the floor:
| Coverage | Requirement |
|---|---|
| General Liability | $1,000,000 per occurrence, no portion self-insured |
| Auto Liability | $1,000,000 combined single limit, with the right coverage symbol (see below) |
| Hold Harmless Endorsement | Truckers Uniform Intermodal Interchange Endorsement (UIIE-1, CA 23 17 or TE 23 17B) on the auto liability policy |
| Trailer Interchange | Required. Must include comprehensive, collision, fire and theft. Limits and deductibles vary by equipment provider |
| Motor Truck Cargo | Required by the majority of equipment providers. Limits and deductibles vary |
| Workers Comp / Employer’s Liability | Required by some equipment providers |
Two lines in that table get certificates bounced. Both are easy to miss.
The boxes nobody checks
First, the auto liability coverage. IANA requires the policy to be marked “Any Auto,” “Scheduled and Hired,” or “All Owned and Hired.” An “All Owned” or “Scheduled Only” policy is not acceptable.
Second, the hold harmless endorsement. The UIIE-1 (or its CA 23 17 / TE 23 17B equivalent) has to be on the auto liability policy. If it isn’t, your limits can be perfectly adequate and your submission can still get rejected. Pull your COI and your endorsement list right now. It takes a couple of minutes.
Your Trailer Interchange Limit Depends on Who Owns the Box
Here’s where “I meet the requirement” stops meaning “I’m covered.”
The UIIA doesn’t set one trailer interchange limit. Every equipment provider sets its own limit and its own deductible rules, and they’re published in IANA’s EP Rules Form 5B. The limits vary by provider, so pull up the form and look up every provider you actually work with.
That matters because a limit that satisfies one provider can fall short for the next one. Most carriers find that out at the gate. Worse, some find out at the claim.
Deductibles work the same way. Each provider sets the maximum deductible it will accept on your trailer interchange coverage. Inside that cap, the deductible is your choice, and it changes both your premium and what comes out of your pocket after a claim. A lower deductible usually costs more up front but hurts less when a box gets damaged. A higher one saves on premium but can turn a claim into a real out-of-pocket bill. Neither is wrong. It depends on how much equipment you pull and how much risk you can absorb, and that’s a conversation to have before you bind, not after.
Some providers also require that they be named as an additional insured on your trailer interchange policy. That’s not a limit question. It’s an endorsement question, and it’s a separate thing your agent has to actually do.
Not Sure What Your Interchange Limit Is?
Most carriers can’t tell us without looking. That’s fine. Send us your declarations page and we’ll tell you what you’re carrying, what your providers require, and whether there’s daylight between the two.
What Trailer Interchange Coverage Generally Does Not Do
Forms aren’t standardized, so this varies carrier to carrier. But across most of what we read, these are the common exclusions and limitations worth knowing before you need them.
- Wear and tear. Normal deterioration is on the equipment provider, not you, and not your policy.
- Mechanical breakdown. A failure that isn’t caused by a covered peril generally isn’t a physical damage claim.
- Reefer unit failure. If you pull refrigerated containers, that’s a conversation on its own.
- Intentional damage. Standard across physical damage forms.
- The freight inside. Trailer interchange covers the equipment. The load is a motor truck cargo question, and that policy has its own exclusion list.
That last one catches people constantly. Two different coverages, two different limits, two different claims. Most equipment providers want both on the certificate.
Why Drayage Markets Like Columbus Feel This Most
If you run out of a market built on intermodal, you’re exposed to this more than a dry van fleet doing shipper-to-shipper work.
Take Columbus. Columbus Region counts four intermodal terminals served by Norfolk Southern and CSX, plus Rickenbacker International Airport, one of the nation’s few cargo-focused airports, and a Foreign-Trade Zone that covers the entire region. A carrier working that market signs interchange agreements constantly and drops equipment nightly. If that’s you, the Columbus trucking insurance page is a good place to start.
Same story anywhere ramps and warehouses sit close together. The more drop and hook you do, the more hours that equipment spends in your care with nobody watching it.
What You Should Do Right Now
Pull your COI and check the auto liability line
Confirm it reads “Any Auto,” “Scheduled and Hired,” or “All Owned and Hired.” If it doesn’t, that’s a five minute fix now and a rejected submission later.
Ask for your UIIE-1 hold harmless endorsement
Look for UIIE-1, CA 23 17 or TE 23 17B on your auto liability policy. If your agent can’t point to it, ask them to.
Find your trailer interchange limit and your deductible, in that order
Write both numbers down. Then ask whether a different deductible is available and what it does to your premium.
List every equipment provider you pull from and check Form 5B
Look up each provider’s required limit, maximum deductible, and whether they require additional insured status. If any provider on your list asks for more than you carry, you found your gap before it found you.
Ask whether you carry non-owned trailer, trailer interchange, or both
If the answer takes more than a minute, your agent is looking it up for the first time too. The follow-up question is what happens to coverage when the box is unhooked.
The Short Version
The equipment you pull but don’t own is the easiest thing on your operation to get wrong, because nothing goes wrong until it does. The interchange agreement already moved the risk onto you. The only open question is whether your policy picks it up.
We read these forms, we read the equipment provider requirements, and we’ll tell you where you’re short before you bind instead of after. That’s how we handle every trucking insurance account we write. If physical damage on your own equipment is also overdue for a look, our breakdown of the hidden coverages in a physical damage policy covers the pieces most agents skip.
Pulling containers? Send us your declarations page and your provider list, or just call 800-885-6682 and we’ll go through it with you.
If your agent can’t answer these, that’s a red flag.
What’s my trailer interchange limit? What’s my deductible? Do I have the UIIE-1 on my auto policy? Am I named as an additional insured where I need to be? Your agent should know these cold. If they don’t, it might be time for a new agent.
