Appenzeller Bahnen Orders Stadler Trains: Automation & Views

Appenzeller Bahnen (AB) has awarded Stadler a 17.5 million Swiss franc contract to supply two new adhesion cogwheel railcars for the historic Rorschach–Heiden line. The new rolling stock, set to enter service by the end of 2028, will not only modernize the 150-year-old route but also introduce a unique forward-view first class and prepare the line for fully automated operation.

RORSCHACH, SWITZERLAND – In a significant move to secure the future of its scenic mountain railway, Appenzeller Bahnen (AB) has officially contracted Swiss manufacturer Stadler to deliver two state-of-the-art railcars. The procurement replaces a 1998-built vehicle and two much older reserve units from 1953 and 1967, whose operating licenses from the Federal Office of Transport are set to expire. The decision, made in collaboration with the cantons of St. Gallen and Appenzell Ausserrhoden and the federal government, addresses the technical obsolescence and non-compliance of the existing fleet with modern accessibility standards.

The new 21-metre-long vehicles are engineered with a dual adhesion and rack-and-pinion drive system, essential for navigating the steep gradients of the Rorschach–Heiden line. A key operational improvement is the ability to run the two identical units in double traction, flexibly increasing capacity during peak demand. Technologically, the railcars are designed for efficiency, with reduced weight and modern components expected to lower both energy consumption and maintenance costs. Passenger experience is at the forefront of the design, which meets all requirements of the Swiss Disability Discrimination Act (BehiG). Features include low-floor access, dedicated spaces for wheelchairs, bicycles, and prams, air conditioning, modern infotainment systems, and charging sockets.

A standout feature of the new fleet is the reintroduction of a First Class service, integrated directly with the driver’s cab. This innovative layout allows passengers to sit alongside the train driver, offering an unparalleled panoramic view of the route and Lake Constance, and a unique close-up experience of the train’s control systems. Crucially, the investment is future-proofed; the railcars will be delivered ready for Grade of Automation 4 (GoA4), aligning with AB’s strategic goal to introduce fully automated, driverless operations on the line from approximately 2035. The popular open-air observation cars used in summer will remain compatible with the new units.

Key Takeaways

• Fleet Modernization: Two new railcars will replace three aging vehicles, enhancing reliability and operational flexibility on the 150-year-old line.
• Enhanced Passenger Experience: The trains will be fully accessible (BehiG compliant) and feature a unique first-class cabin with a driver’s-eye view.
• Future-Proof Technology: The rolling stock is prepared for GoA4, paving the way for AB’s planned transition to fully automated operation by 2035.

Editor’s Analysis

This procurement by Appenzeller Bahnen, while modest in scale, is a textbook example of how operators of heritage and mountain railways are tackling the dual challenges of modernization and long-term viability. The choice of Stadler, a global leader in specialized and custom rolling stock, underscores the need for bespoke engineering on routes with demanding topography. By integrating cutting-edge GoA4 automation-readiness into a cogwheel design, AB and Stadler are setting a new benchmark. This project demonstrates a clear trend: investing not just to replace aging assets, but to transform operational models, enhance passenger appeal, and secure a railway’s future for decades to come, blending historical charm with next-generation technology.

Frequently Asked Questions

When will the new Stadler trains begin service on the Rorschach–Heiden line?

The two new adhesion cogwheel railcars are scheduled to enter regular service from the end of 2028.

What is unique about the first-class seating on the new trains?

The first-class section is combined with the driver’s cab, allowing passengers to sit next to the train driver and experience a forward-facing panoramic view of the track and scenery.

Are the new vehicles prepared for future automation?

Yes, the railcars are technically prepared for Grade of Automation 4 (GoA4), which corresponds to fully automated, driverless operation. Appenzeller Bahnen plans to implement this technology around 2035.