Key takeaways
- Gornergrat Bahn AG is a tourist rack railway high in the mountains – passenger traffic, no freight.
- Rack rails come in several designs: as a ladder type with rungs, and as a lamella design with one or more tooth profiles.
- The design determines the vehicles: rack-driven vehicles are not interchangeable between different rack rail systems.
- The small h in the vehicle code stands for rack drive in the Swiss designation system.
- High mountains mean their own safety rules: only board mountain railways at official stations – alpine hazards lurk away from marked paths.
Contents
Fact file
| Business area | Tourist mountain railway services |
|---|---|
| Legal form | AG – public limited company under Swiss law |
| Railway type | Narrow-gauge rack railway |
| Name pattern | Destination name – the name names the line's destination, not two end points |
| Role in operation | Private railway – with this type of railway, services and infrastructure are often combined in one company |
How to recognise this operator
Is this really Gornergrat Bahn AG?
- A rack rail sits between the running rails – the third, toothed rail
- Vehicles carry a small h in their type code for rack drive, for example in Bhe
- Noticeably slower running than on adhesion railways, especially downhill
- Narrow-gauge dimensions: narrower bodies, shorter vehicles, tight curves
- Passenger operation with a high proportion of window area – the view is part of the product
- Data panel with the country code CH- for Swiss registration
Updated: August 2026 – Between the running rails lies a third, toothed rail, and the train pushes its way up the slope with an even clatter. Gornergrat Bahn AG is one of the Swiss mountain railways where this sight is part of everyday life. This page explains what you are actually looking at – and why the design of the rack rail decides which vehicles can run on a line at all.
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What is the Gornergrat Bahn?
Gornergrat Bahn AG is a Swiss public limited company that operates a narrow-gauge rack railway high in the mountains. Its business is tourist passenger traffic: passengers do not travel to arrive, but for the journey itself. That shapes the vehicles, the timetable and the seasonality more strongly than on any local passenger railway.
The company name follows a pattern of its own. It names the destination of the line – unlike railways with a chain of place names, such as the Montreux–Oberland Bernois Railway, or railways with a letter code such as the Matterhorn Gotthard Bahn. Once you start sorting Swiss railway names, you quickly spot these three families: destination name, place chain, letter code.
Why rack drive, in short
On ordinary lines, a locomotive transmits its power through friction between wheel and rail. Beyond a certain gradient, friction is no longer enough – neither for pulling nor for braking. A driven pinion then engages with a rack rail and provides the connection positively, rather than through friction. The really interesting part starts one level down: in the different designs of that rack rail.
The core of it: telling rack rail designs apart
A rack rail is not just a rack rail. There are several technical families, and they look quite different in the track. Once you have learned to tell them apart, you can name the basic type of any rack railway at a glance.
The ladder type consists of two longitudinal members with rungs spaced evenly between them – in the track it looks like a ladder lying flat. The driving pinion engages between the rungs. This design is robust and forgiving, because the tooth engagement covers a large area.
The lamella type, by contrast, uses one or more toothed profiles standing on edge. In the single-lamella version, it is a single tooth profile running down the middle of the track. In multi-lamella versions, two or three such profiles sit side by side, with their teeth offset against one another. That is the real trick: because the teeth do not sit on a single line, at least one tooth is always in engagement. Running becomes smoother, and power transmission more even.
| Feature | Ladder type | Lamella type |
|---|---|---|
| Appearance in the track | rungs between two members | one or more upright tooth profiles |
| Tooth engagement | pinion engages between the rungs | pinion meshes with the tooth profile |
| Multiple engagement | across the width of the rungs | through offset teeth in multi-lamella versions |
| Smoothness | depends on rung spacing | very even with offset lamellas |
| Vehicle compatibility | vehicles are matched to the design | vehicles are matched to the design |
The last row is the crucial one: rack-driven vehicles are not interchangeable between systems. Pitch, tooth shape and height all have to match. That is why rack railways procure small, line-specific series rather than off-the-shelf vehicles – and why every mountain railway fleet is a chapter of its own for collectors. Such small series are built by a handful of specialist works, of which Stadler Rail is the best-known name in Swiss mountain railway building. Vehicles such as the Bhe 4/8 or the rack-driven electric locomotive HGe 4/4 exemplify exactly this specialisation.
Entering the rack section
At the transition from the plain track to the rack section there is an entry device: the start of the rack rail is mounted so that it can move, so that the pinion engages cleanly even if a tooth would otherwise land exactly on a tooth. You can spot this point in the track by its different construction – and in the vehicle, often by a short, clearly noticeable jolt.
Collecting mountain railway vehicles
Small series, rare numbers – keep track of which vehicles you have already caught.
Reading vehicles: the small h
Swiss vehicle designations are a system of their own, made up of letters and an axle fraction. For rack railways, one detail is enough to start with: the small h stands for rack drive, the small e for electric drive. The fraction after it gives powered axles against total axles. A code such as Bhe 4/8 therefore reads as an electrically powered rack-driven vehicle with four of its eight axles driven.
How the full designation system works – with the speed classes for locomotives and the class letters for coaches – is described in more detail on the page for the Swiss Federal Railways. For the mountain railway world, this pair is enough to remember at first: h for rack drive, e for electric.
Observing in the high mountains
Mountain railways are rewarding for photography and demanding at the same time: strong light, hard contrasts, snow well into spring, plus mountain weather that can turn within minutes. Anyone who underestimates that arrives poorly prepared.
Are you prepared for a mountain railway trip?
- I stay strictly on marked paths and at official stations.
- I have checked the weather for the altitude, not just for the valley.
- I have warm clothing with me, even in summer.
- I know when the last train down the mountain runs.
- My battery holds up in the cold – a spare is carried close to my body.
- I know how the light behaves on snow and have adjusted my exposure.
For the photography side, it is worth reading the Tips for winter railway photography – snow fools every automatic exposure meter. The basics of composition are covered in the guide How to take good photos of trains.
Alpine hazards are not a formality
Away from marked paths there is a risk of rockfall, avalanches, drops and sudden changes in weather. Railway installations, tunnel portals and track areas are off limits. Only board mountain railways at official stations. Closures and barriers are not an obstacle to get around, but a sign of a real hazard.
Common mix-ups
- Rack railway and funicular – a funicular is pulled by a cable and has no drive in the vehicle itself. The rack rail in the track is the decisive distinguishing feature.
- All rack rails are the same – ladder and lamella designs are fundamentally different, and vehicles cannot be transferred between them.
- Narrow gauge means mountain railway – many Swiss railways run on narrow gauge without ever touching a rack rail, for example on the network of the Rhaetian Railway.
- Rack drive along the whole line – many railways switch between adhesion and rack operation. A rack-driven vehicle does not mean the whole line has a rack rail.
- Tourist railway means heritage railway – a modern mountain railway in daily service is not a heritage association, even if both get called “tourist” railways.
Verdict
Gornergrat Bahn AG stands for the most technically distinctive branch of the Swiss railway landscape: the rack railway high in the mountains, with a vehicle world and operating rules all of its own. Anyone who can read the rack rail in the track and knows what the small h in a vehicle code means has found the key to an entire group of railways.
Short verdict
You will spot the third rail in the track straight away – it gets interesting once you tell its design apart. Ladder or lamella decides which vehicles can run on a mountain line at all.
All your mountain railway sightings in one place
Small series, rare vehicles, clear records – collect your finds in Traintrack.
Summary
- A narrow-gauge rack railway with a tourist focus, incorporated as a public limited company.
- Recognisable by the rack rail in the track and by rack-driven vehicles carrying the letter h.
- Rack rail designs differ in shape and tooth engagement, and tie the vehicles to the system.
- Timetables and vehicles change with the season – always note down what you actually saw.
Frequently asked questions
What is Gornergrat Bahn AG?
A Swiss public limited company that operates a narrow-gauge rack railway high in the mountains. Its focus is tourist passenger traffic: the journey is the product, not just arriving. The company name names the destination of the line, unlike many other Swiss railways, which use a chain of connected places.
What is a rack rail?
A third, toothed rail running along the middle of the track. A driven pinion on the vehicle engages with it and transmits power positively rather than through friction. This makes it possible to run gradients that pure friction would long since fail on – both uphill and downhill, since the rack rail also provides the braking basis.
What rack rail designs are there?
Broadly two families: the ladder type, where rungs sit between two longitudinal members and the pinion engages between the rungs, and the lamella type, where one or more toothed profiles stand side by side. Multi-lamella versions offset the teeth against one another so that engagement never breaks off.
Can any rack-driven vehicle run on any rack rail?
No. The rack system, pitch and tooth shape all have to match. Vehicles are therefore tied to the system of their own line and cannot simply be transferred to another rack railway. That is one of the reasons why mountain railways procure their own, often small, vehicle series.
What does the h mean in vehicle codes such as Bhe 4/8?
In the Swiss designation system, the small h stands for rack drive, and the small e for electric drive. The capital letter names the coach class for railcars, and the fraction after it gives the ratio of powered to total axles. The system is explained in full detail on a separate page.
Am I allowed to photograph along the line?
Only from publicly accessible, marked paths and from official stations. Track areas are off limits. In the high mountains, real hazards come on top: rockfall, avalanches, crevasses and very fast changes in weather. Do not leave marked paths – not even for a better shot.
Why are mountain railway vehicles so small?
Because narrow gauge, tight curves and steep gradients call for compact, light vehicles. Every extra tonne has to go up the mountain and come back down again under control. Short bodies also result from tighter curve radii. The result is a vehicle world of its own, with little in common with standard-gauge vehicles.
Why are there no figures here for height, length or gradient?
Because such figures vary by source and are often misquoted in the detail. This page sticks to knowledge that holds up over time: how rack rails are built, how to recognise rack-driven vehicles, and how to record a sighting so that it stays useful.
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Vehicles in the rolling stock database
Bhe 4/8
Bhe 4/8 means: second class, rack-and-pinion drive, electric, four of eight axles powered. Here's how to read the Swiss designation and spot the unit in the field.
ClassHGe 4/4
The HGe 4/4 is an electric rack locomotive for Swiss metre-gauge railways. This page decodes the designation and shows what to look for in the field.
ClassMGB ABeh 8/12 (Orion)
ABeh 8/12 means: first and second class, electric, rack drive, eight of twelve axles powered. Here's how to read the designation of the Stadler-built Orion.
More operators
Matterhorn Gotthard Bahn AG (MGB)
Matterhorn Gotthard Bahn AG is a metre-gauge alpine railway. Its operation is a textbook example of how vehicles switch between friction and rack drive.
Local & regionalMontreux-Berner Oberland-Bahn AG (MOB)
Montreux-Berner Oberland-Bahn AG links the Lake Geneva region with the Bernese Oberland. Its type of railway stands for something rarely explained elsewhere: the panorama car.
Local & regionalRhätische Bahn AG (RhB)
The Rhätische Bahn is Europe's best-known narrow-gauge railway. Its most striking feature isn't the vehicle but the route: spiral tunnels, viaducts and avalanche galleries.
Who is behind it
Groups, brands, manufacturers and operators – who owns whom and how to recognise them out in the field.
Where to see Gornergrat Bahn AG
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