Swiss railway signalling

Swiss railway signalling describes the railway signalling systems used in Switzerland by the different railway companies. There are two main types of signal, used up to 160 km/h, above which speed cab signalling is used. The rules of the railway still cover mechanical signals, which have all but disappeared.
Legal aspects
Signalling is governed by strict rules, controlled by the Federal Transport Office working with the train companies. The rules for railway operation are laid out in les Prescriptions de circulation des trains, of which the latest version was issued in July 2010 and are based on article 11 of the decree of 23 November 1983 on railways.
Light signals
Swiss light signals are divided into two classes, recognizable by the difference in shape of the signal: type L (for Light) and type N (for numérique (digital)). Type L was developed many years ago. The N system was developed for the Rail 2000 project...