Combined transport covers a shipment that moves across two or more modes, sea, road, rail, or air, under a single contract with a single party responsible for the entire journey, evidenced by a document such as the FIATA Multimodal Transport Bill of Lading. Liability follows a network system: if the stage where loss occurred is known, the convention governing that specific mode applies. If it cannot be identified, a default limit applies instead, and that default can be lower than what a single-mode shipment would have carried.
What combined transport actually is
Rather than arranging a separate contract for each leg of a journey, combined transport places one party, the Multimodal Transport Operator, in charge of the whole route from collection to final delivery.
- One document covers every leg, regardless of how many different carriers or modes are actually subcontracted to physically move the cargo.
- The operator answers for the entire journey, not just the portion they physically handle themselves.
- The document can be issued negotiable, “to order”, functioning as a document of title in the same way already covered for a standard bill of lading, and is recognized by banks in letter of credit transactions.
The network liability system behind combined transport
Combined transport does not apply one uniform liability rule to the whole journey. Instead, it borrows from whichever convention would have applied if that specific leg had been a standalone contract.
- If the stage of loss is known, the applicable mode’s own convention determines the liability limit, whether that is the ocean carriage rules, the CMR rules already covered on this site for the road leg, or the air carriage convention for the air leg.
- If the stage of loss cannot be identified, a specific default limit applies instead, commonly 2.75 SDR per kilogram of gross weight when the journey included carriage by sea or inland waterway.
- If the journey did not include sea or inland waterway carriage at all, that default rises to 8.33 SDR per kilogram, the same figure already covered for CMR road transport.
Why an unidentified stage of loss can leave you worse off
This is the detail that catches most shippers off guard: the default limit for an unidentified stage of loss, 2.75 SDR per kilogram when sea carriage was involved, is lower than the 8.33 SDR per kilogram a purely road-based CMR shipment would carry. In other words, adding a sea leg to a combined transport journey can actually reduce the recovery available if damage is discovered but the exact point of loss is never established.
Why proof of handover at each stage matters more than it looks
Establishing exactly where damage occurred is what determines which liability regime applies, and a clean proof of delivery at each handover point is often the only evidence that can pin the loss to a specific stage rather than leaving it undetermined and subject to the lower default.
- A signed, timestamped handover record at every stage transition is what allows a claim to be tied to the convention that actually governed that leg.
- A missing or clean signature at any single handover point can make it impossible to prove where the damage happened, pushing the claim into the lower default limit by default.
- The more parties and handovers involved, the harder this becomes to establish after the fact.
Where an onboard courier removes the ambiguity entirely
An onboard courier is present for the entire journey, which means there is no multi-operator handover chain and no question of which stage a loss occurred at, since one person can account for the shipment’s condition at every point from pickup to delivery.
Combined transport vs. onboard courier
| Criteria | Combined transport | Onboard courier |
|---|---|---|
| Liability if stage of loss is unknown | A default limit, sometimes lower than a single mode would carry | Not applicable, one person accounts for the whole journey |
| Handover points | Multiple, each requiring its own proof | None, custody never transfers |
| Best for | Large, multi-leg, cost-sensitive shipments | Deadlines and cargo that cannot absorb liability ambiguity |
How OBC ONE removes the multi-stage question entirely
A typical mission runs through six steps with OBC ONE, most of which overlap to save time.
- Brief and quote. You share the shipment, origin, destination, and the deadline. OBC ONE returns an all-in quote in under 15 minutes.
- One person, one journey. There is no handover chain to document or dispute later.
- Courier assignment. A vetted courier near the origin is dispatched immediately.
- Personal custody in transit. The courier carries the shipment in the cabin, staying with it through every connection.
- Direct delivery. Handover happens with the named recipient, not an intermediate operator.
- Proof of delivery. Timestamped confirmation for your records.
Why freight forwarders route these decisions through OBC ONE
Choosing the right option when liability ambiguity is not acceptable starts with the business model. Many specialty couriers sell directly to shippers, which puts them in competition with the forwarders who might otherwise use them. OBC ONE is built the opposite way: we work exclusively for and with freight forwarders and time-critical desks. We never approach your clients directly and never compete with you.
That partner model is backed by real operator experience. OBC ONE was founded by an onboard courier who personally flew roughly three million kilometers over six years, so the network understands exactly why the network liability system in combined transport matters. Forwarders use us because we deliver:
- An all-in quote in under 15 minutes, 24/7/365.
- 1,500+ vetted couriers positioned around major hubs worldwide.
- True door to door coverage, with import and export customs clearance and Importer of Record service in most markets.
- IATA certified dangerous goods capability for shipments that require it.
- One specialty, onboard courier and hand carry for time-critical missions, done at the highest standard.
How to choose between combined transport and an onboard courier
- Honest assessment of liability exposure if the stage of loss is unclear, not just the headline convenience of one document.
- Real network density near major hubs, so the onboard courier option is not delayed by being flown in first.
- Fast, transparent quoting, ideally with a named dispatcher accountable for the mission.
- Documented dangerous goods competence, relevant to either option.
- A forwarder-only model, if you are a forwarder, so your partner never becomes a competitor for your clients.
Frequently asked questions
What is combined transport?
Combined transport covers a shipment moving across two or more modes under one contract, with a single Multimodal Transport Operator responsible for the entire journey rather than separate contracts for each leg.
What is the network liability system?
It means liability for a loss follows whichever convention would have applied if that specific leg had been a standalone contract, provided the stage where the loss occurred is known.
What happens if the stage of loss cannot be identified?
A default limit applies instead, commonly 2.75 SDR per kilogram when the journey included sea or inland waterway carriage, or 8.33 SDR per kilogram if it did not.
Why can adding a sea leg reduce the liability limit?
The default for an unidentified stage of loss is lower when sea carriage was part of the journey than the default that applies to a purely road-based shipment, which can leave a shipper with less recovery than expected.
How can a shipper avoid falling into the lower default limit?
A signed, timestamped proof of delivery at every handover point helps establish exactly where a loss occurred, which is what allows a claim to be tied to a specific mode’s convention rather than the lower default.
Do you sell directly to shippers or buyers?
No. OBC ONE works exclusively with and for freight forwarders and time-critical desks. We act as a white label partner and never approach our clients’ customers directly.
Get an answer without a multi-stage liability question
If you are a freight forwarder who cannot afford ambiguity over where a loss occurred, OBC ONE gives you a straight answer, 24/7, worldwide and never a competitor. Contact our team for an all-in quote in under 15 minutes, or explore more time-critical logistics insights.
