MBC Transports de la région Morges–Bière–Cossonay

Updated: August 2026 – Three place names, a French regional term and a three-letter code: MBC Transports de la région Morges–Bière–Cossonay carries its entire job description in its name. Things get interesting where a regional railway like this meets the large standard-gauge network – because that is exactly the point at which the railway has to solve a question that never bothers passengers but constantly occupies freight customers.

What is the MBC?

The MBC is a regional transport company in French-speaking Switzerland. Its name follows the place-name-chain pattern that is common in Switzerland and names no fewer than three towns, joined by dashes. The prefix Transports de la région makes clear that this is about a regional transport service and not merely a single railway line.

The code MBC is formed from the initial letters of this place-name chain – the same formation principle you find repeated across many Swiss companies. How such names and codes can be read systematically is described in detail at the Lugano–Ponte Tresa railway entry. Further examples from Romandy are Travys and the Chemin de fer Lausanne–Echallens–Bercher.

The explainer: what happens at the gauge boundary

As soon as a narrow-gauge railway reaches a place that also lies on the standard-gauge network of the SBB, a gauge boundary is created. For passengers it is harmless: you change trains. For goods it is the central problem of the entire narrow-gauge operation, because a wagon cannot simply roll across the boundary. Historically, three basic solutions have emerged for this, plus two rarer special approaches.

Solution	Principle	Effort	Typical use
Transshipping the load	Goods move from a standard-gauge wagon into a narrow-gauge wagon	Requires lifting gear or a ramp	General cargo, bulk goods, containers
Transporter wagons	The standard-gauge wagon is placed onto narrow-gauge running gear	Requires a lifting facility and shunting effort	Through wagon workings
Three-rail track	Both gauges share one trackbed	Expensive points and platforms	Short shared sections
Transferring the body	The wagon body switches between bogies	Requires special equipment	Rare special cases
Variable-gauge wheelsets	Wheelsets change their spacing	Very complex technology	Exceptional cases

The three-rail track is the most elegant solution, yet also the most awkward. A shared rail is laid, against which both gauges bear, and two further rails at different spacings. Vehicles of both systems thus use the same trackbed. The catch shows up in two places: points become considerably more complicated, because two running paths have to be guided at the same time. And platforms inevitably fit only one of the two gauges properly, because the centre of the vehicle sits in a different place depending on the system.

Transporter wagons, in turn, save the transshipping but cost shunting time, a fixed installation and extra height – the wagon, now raised up, becomes taller and no longer fits through everywhere. Which solution a railway chooses depends on what is being transported and how often.

For observers, gauge boundaries are the most interesting places in the network: vehicles of two worlds stand side by side there, and the size difference becomes visible in a single photo. On the standard-gauge side these are vehicles such as the RABe 523 or shunting locomotives of the Ee 3/3 type, on the narrow-gauge side noticeably more compact railcars.

Recognition in the field

The general approach to identifying a company is described in the guide Who actually runs it? Recognising railway operators. And if goods wagons really do run in the train, the overview of freight wagon types helps you place them.

Narrow gauge is not a stopgap

A stubborn misconception: many people regard narrow gauge as a makeshift solution that will later be “properly” upgraded. In Switzerland that is not true. Narrow-gauge networks here are permanently operated systems with their own vehicle industry, represented by manufacturers such as Stadler Rail, with their own operating rules and their own timetables – from flat regional services all the way up to the high mountains.

Documenting sightings

Common mix-ups

• Code meaning line name – MBC names the company, not a line.
• Place-name chain meaning today’s route – the name preserves a historical state.
• Narrow gauge meaning mountain railway – many narrow-gauge railways run in flat terrain without any rack section at all.
• Three-rail track meaning a mistake in track construction – it is a deliberately built solution for two gauges.
• Transporter wagon meaning a special working – it is a regular piece of operating equipment, not a curiosity.

Conclusion

The MBC stands for two things at once: for the Swiss art of packing an entire job description into a company name, and for the technical world of gauge boundaries. Anyone who understands both reads not just this name correctly, but also the track layouts where two railway worlds meet.