Swiss railway signals

This is a large scale and long running project - slightly ambitious too. The overall plan is to make a fully functional TRS adaptation of the original signalling system used by the various Swiss railway lines. It is a payware project, obviously since it has been placed here, but the basic and very rudimentary signals will be freeware. The payware aspect enters into the project because of the massive amount of on-site research and 3D modelling effort that it took to make this as true to the real thing as possible given the limitations of TRS.

The basic signals (FREEWARE)

This bundle comprises the simple signals, that is the two and three aspect signals. These will be available in the mastmounted version as well as the version to be used suspended from catenary bridges. These signals will have neither LOD nor scripted functions.

The enhanced signals.

What we are working with, in this first batch, is the system L which is the most widespread of the two systems used on the SBB lines. I am working with Andreas Halalko Møller on this and we will use an adapted version of his script for the DSB signals. The System N (Neu/New) will come later, there is enough work involved in completing the old system already. For more info on the different signal systems see Roland Smiderkal's excellent site on the subject.

Why script? Because the Swiss system involves speed signalling as well as a mere STOP-PROCEED-CAUTION function. That is why you see up to six lanterns on a signal, the seventh lantern in the picture being a backup red. Hence you can see as many as three green lights at the same time on a signal meaning 90 km/h.
But there is more than that. Why must a signal be gridlocked? We see no reason that a signal must stick to the rails just because it can. A signal is really nothing more than a scenery item that shows some predefined states by way of lights. So we pack the "logic" into a trackside object which is part of the Signum safety system - a so-called crocodile - and link the signal to it. That way we achieve a lot of benefits; height adjustability and rotatability being the most significant.


Since the Swiss tend to adapt the already placed signals to new conditions, it can lead to some strange looking constellations of lanterns. Why place a new signal, when you can remove a lantern and achieve the same result. Hence a lot of signals keep their old overall appearance, but with less lamps.

Swiss main signals of System L ranging from the complicated to the bare minimum configuration

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