SBB Cargo International AG

Updated: August 2026 – Some freight trains in Switzerland stop nowhere at all. They come from the north, disappear towards the south, and have little economic connection to the country in between. That’s transit traffic – and SBB Cargo International AG carries a name that points in exactly that direction. This page explains how such traffic works and how to recognise it.

What is SBB Cargo International AG?

SBB Cargo International AG is a public limited company registered in Switzerland, active in rail freight transport. The name states the business area with “Cargo” and, with the suffix “International”, suggests that the focus is likely to lie on cross-border traffic. The name gives away no more than that – and no more should be inferred from it either.

Caution is especially warranted here: the name stem is shared with SBB Cargo AG. Whether and how two companies with related names are connected is a question for the commercial register, not for observation at the trackside.

Transit traffic through the Alps: the basic principle

Transit means: a train starts and ends outside the country it crosses. For Switzerland this isn’t a marginal phenomenon but a consequence of its location. Between the economic areas north and south of the Alps only a few high-capacity rail routes exist, and they run through the country.

That produces traffic with a logic of its own. It doesn’t follow local demand but European freight flows; it runs in large, consistent volumes; and it’s designed for through running, because every stop costs time and path capacity. South of the Alps, the route then continues over the network of Rete Ferroviaria Italiana.

Feature	Transit traffic	Domestic and local traffic
Start and destination	Both abroad	At least one domestic
Train formation	Long, uniformly loaded	Mixed, changing wagon types
Stops en route	As few as possible	Several, for setting down and picking up
Vehicles	Often multi-system capable	Often designed for one network
Time of day	Spread out, weighted towards off-peak hours	More tied to customers’ operating hours

Why rail at all? Because transit brings exactly the conditions under which rail plays to its strengths: large volumes, long distances, few intermediate stops and a mountain range in the way. Traffic that already runs from one conurbation to another and has to cross a massif along the way is the ideal case for rail – while small-scale distribution traffic over short distances is exactly the opposite.

This logic also explains why transit traffic appears in waves. It depends on production and handling schedules at distant sites, not on demand along the route. Anyone who waits for hours on a Tuesday morning and sees little hasn’t necessarily chosen the wrong spot – often it’s the wrong time of day or the wrong day of the week. A log of observations spread over several dates yields more here than a single long day.

In practice that also means: a long train, uniformly loaded along its whole length, that works at no station for no discernible reason, is very likely a corridor train. A train with six different wagon types that stops at a junction almost certainly isn’t.

A few spots are particularly good for observing this. At Basel SBB corridor trains enter the Swiss network and change electrification system. At Erstfeld the climb to the Gotthard mountain line begins, where train length and hauled load can be read off directly. And at Bellinzona traffic sorts itself for the onward journey towards Italy.

Identifying it in the field

The general route from vehicle to company is described in the guide who’s actually running it? Identifying the EVU. How the vehicle number is structured and what can be read from it is explained in the guide to the UIC number on the vehicle.

Which vehicles suit corridor traffic

The designations of Swiss traction vehicles follow their own scheme of letters and an axle fraction, for example Re 4/4 II: the fraction states powered axles over total axles, and the capital R stands for higher speed on curves. For main-line service with heavy trains, four-axle machines are the norm, fitted with matching multi-system equipment for cross-border use.

Examples from the vehicle database are the Re 474 as a modern main-line locomotive, the classic Re 420 and the Re 430. These are aids for placing a vehicle by purpose – not a statement of which company runs a particular vehicle. Similar corridor traffic is also offered by other Swiss companies, such as Crossrail or Captrain Schweiz.

Documenting sightings in corridor traffic

With transit trains, a sighting without context is worth particularly little, because the same vehicles run over long distances. It only becomes useful once you note location, time and direction – from which running patterns can later be reconstructed.

A second point concerns the precision of the location. For trains that run hundreds of kilometres at a stretch, naming a town is almost worthless – between the north entrance and south exit of a junction, minutes and several kilometres can already lie. So note a landmark you’ll find again: a bridge, a level crossing within view, a station name with an addition like “north entrance”. Only then can two sightings of the same vehicle be set in relation to a running time.

How to systematically observe freight traffic without reliable timetable data is described in the article on the freight-train radar. The method described there – combining several sources, logging your own observations, looking for patterns over weeks – works the same way in Alpine transit, even though the available data sources differ by country.

Common mix-ups

• Taking a shared name stem as proof – similar company names don’t prove a connection between companies.
• Noting the train name instead of the company – in combined transport, operators such as Hupac market trains under their own name.
• Multi-system locomotive equals transit – such vehicles also run in domestic workings; the roof is a pointer, not proof.
• Reading livery instead of the marking – leased vehicles often keep their keeper’s colours.
• Taking an empty train for transit – empty-wagon returns also look uniform but logistically belong to the opposite direction.

Conclusion

SBB Cargo International AG can only be cleanly described the way its name allows: a Swiss public limited company, freight transport, the suffix “International” as a pointer to a cross-border focus. Everything else belongs in the commercial register or in current research – and in the field, only what’s on the vehicle helps anyway.