What is behind the cable car technology?
What was the decisive argument for choosing a cable-driven transport system?
Laurent Magnin, Head of Mechatronics at CST:
As the project progressed, we were able to more precisely define our requirements for the CST system and therefore the demands on the technology. With this knowledge, we examined and compared the original technology of autonomous tunnel vehicles with alternative technologies in terms of their advantages. The decision was made in favor of a cable-pulledtransport system because it is technically proven, operationally stable and easier to implement. It offers clear advantages, particularly in the tunnel environment – such as low space requirements, high safety standards and precise controllability. Moreover, this technology has been implemented many times before. Ultimately, these factors tipped the scales in favor of the system change.
In the context of CST, what exactly does “proven technology” mean?
Laurent Magnin: It stands for a rail-guided, cable-pulled transportation system that has proven itself in demanding environments for decades. It combines mechanical simplicity with high operational safety and does not require complex sensor technology or autonomous navigation. Rather, it is based on a robust, controlled drive concept that can be precisely controlled and monitored. Established companies and planning offices have extensive expertise in planning, implementing, and operating this technology.
How will this decision affect the operation of the system? For example, how will it impact maintenance, reliability, and automation?
Laurent Magnin: The choice of a a cable-pulled system offers clear operational advantages. This technology requires significantly less maintenance than autonomous tunnel vehicles and offers a high level of reliability due to its simple structure. Automation can be implemented in a targeted and controlled manner without the complexity of autonomous systems. Another advantage lies in the cable length. It enables entire tunnel sections to be operated with just one drive point, further reducing maintenance costs and making access easier. Fire risks associated with battery-powered autonomous tunnel vehicles are also eliminated.
What excites you about this solution?
Laurent Magnin: I really enjoy working with our partners from the cable car industry. They combine experience with innovation, embrace new challenges, and never lose sight of the essentials. I am impressed by how clear and functional this solution is. The cable-driven transport system is not a technical experiment, but rather a well-thought-out, reliable system tailored precisely to the requirements of tunnel transportation. To me, it’s a forward-thinking decision — a solution that’stechnically and operationally viable in the long term.