Short answer
Ro-Ro is a form of shipping in which wheeled vehicles drive onto and off the vessel under their own power. Because the cargo stays on the vehicle, it is not separately handled. On Türkiye–Europe routes, it is chosen not for cost but because it takes driver working-hour limits and border queues out of the equation.
What Ro-Ro is
Ro-Ro — Roll-on/Roll-off. A form of shipping in which wheeled vehicles drive onto and off the vessel under their own power via a ramp.
Its counterpart is Lo-Lo (Lift-on/Lift-off): cargo loaded from above by crane. Container shipping runs on Lo-Lo.
What can be carried by Ro-Ro: a tractor unit with trailer, a standalone trailer or semi-trailer, construction machinery, cars and commercial vehicles — in short, anything on wheels.
Why it is used
Ro-Ro’s ticket fee is added on top of road transport cost; in other words, it directly increases the direct cost. Despite this, it is chosen because it removes three constraints:
Driver working hours. Time spent on the vessel counts as rest for the driver. A schedule broken up by mandatory breaks on a long road leg runs uninterrupted on Ro-Ro.
Border queues. Waiting times at land border crossings can become unpredictable depending on the season and volume. The sea leg removes this uncertainty.
Transit permit quota. Transit countries’ quota limits tighten in some periods. Passage by sea takes these countries out of the route.
On top of this, the cargo is not handled: the goods stay on the vehicle, and damage risk is lower than in transshipment-based transport.
Accompanied or unaccompanied
There are two models, and they directly determine cost and organization.
In accompanied transport, the driver travels on the vessel together with the vehicle. The journey continues immediately on arrival. Organization is simple, but the driver and tractor unit remain tied up for the duration of the voyage.
In unaccompanied transport, only the trailer is left on the vessel; another tractor unit takes over on the other side. The ticket is cheaper, and the tractor unit is free to do other work during that time. In return, it requires tractor unit organization at both ends and trailer tracking.
For regular, high-volume flows, the unaccompanied model is generally more efficient; for one-off shipments or those with a firm delivery date, the accompanied model is safer.
Comparison with road transport
| Road | Ro-Ro | |
|---|---|---|
| Direct cost | Lower | Ticket fee added |
| Driver hour restriction | Applies | Counts as rest on board |
| Border waiting risk | High and unpredictable | Removed |
| Transit permit | Required | Not required for countries bypassed by sea |
| Schedule flexibility | High, can depart anytime | Tied to sailing schedule |
| Handling | None | None |
The decision depends on how firm the delivery date is and how busy the border is at that time. Because both factors vary, the choice of routing should be made shipment by shipment.
Common mistakes
Not checking sailing frequency. Ro-Ro runs on a schedule. Missing loading by a day on a route with two sailings a week means waiting for days.
Not factoring the accompanied/unaccompanied decision into the cost calculation. In unaccompanied transport, if tractor unit provision on the other side is not planned, the saving on the ticket is wiped out by waiting costs.
Booking too late. During busy periods, space cannot be found; capacity fills up quickly, particularly in the weeks before and after holidays.
Not securing the cargo on the vehicle properly. There is vessel motion on the sea leg. Securing that is adequate for road transport can be insufficient at sea.
This page is general information, not legal advice. Regulations change; confirm the current position before acting.