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European Train Control System: The solution for the standardized European Train Control System ETCS from Siemens is known as Trainguard. The European Train Control System is gradually replacing the various different national train-protection and train-control systems. Standardized interfaces between vehicle and line allow interoperability and cross-border traffic.

Trainguard is available in two versions: Trainguard 100 for ETCS Level 1 and Trainguard 200 for ETCS Level 2. As a complete provider for ERTMS (European Rail Traffic Management System), Siemens continues to supply the digital GSM-R train radio system.

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The Eurobalise S21 is used to transmit data to the vehicle intermittently. It consists of a compact module mounted in the center of the track. The eurobalise S21 transmits data in the form of telegrams. When the vehicle passes over the eurobalise S21, it feeds power to it by induction. The eurobalise S21 uses this energy to transfer its information to the EVC via the on-board balise/loop antenna. S21 eurobalises are used as transparent data balises and as fixed-data balises.
 

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Euroloop S21 F is a continuous option complementing the Eurobalise S21, making it possible to transfer data continuously from the fixed system to the vehicle (infill function). It consists of a coaxial spaced conductor up to 1,000 m in length that is placed in the base of the rail between the distant signal and the main signal. The Euroloop modem modulates and amplifies the telegram data of the LEU S21 onto the HF carrier.
 
 

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The intermittent automatic train control system Zub 200 can be integrated into existing signaling systems. Its modular design allows an optimum configuration for every line.

Zub 200 places no specific requirements on the signaling system in order for the railways to be protected, and it supports the driver with a host of automatic functions such as:

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The Zub 262 automatic train control system is a modular system that is used in a number of different variants in accordance with the customer's specific requirements and can be adapted to existing signaling systems.

The Zub 262 automatic train control system is used in main-line services. Transmission is via an 850-kHz channel and eurobalises.
 

Basic functions of Zub 262:

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The ZSI 127 automatic train control system monitors the movement of the train using dynamic brake curve computation. The basic functionality has been enhanced with special functions for operation on secondary lines.

Data is transmitted on an intermittent basis via Eurobalises, and also semi-continuously via Euroloop if necessary. The movement of the train is monitored continuously and without interruption on the basis of braking curve computations. Intervention occurs in stages, starting with an audible warning, followed by service braking and then, if necessary, emergency braking. Functions that are supplementary to ETCS provide interoperability on ETCS Level 1 lines.

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 Indusi I60R is used on mass transit and main-line railways. Indusi I60R is an inductive automatic train control system that transmits information from the track to the train. This is done at suitable points along the lines, e.g., at signal locations or before speed-restriction areas. It consists of trackside equipment, the track magnet, and on-board equipment consisting of central unit, vehicle magnets, odometer pulse generator, and control and display elements.

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The GPE 90 R speed checking facility has the function of checking the speed of rail vehicles with the active Indusi on-board equipment and of comparing it with the permitted speed at the place of installation.

If a vehicle exceeds the permissible speed, the Indusi on-board equipment is activated, thereby initiating an emergency braking procedure and/or triggering a warning signal. GPE 90 R is based on the long-established Indusi (inductive intermittent) principle.

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The continuous automatic train control (ATC) system, using the LZB 80 on-board equipment, provides the driver with advance information about anticipated signals and speed restrictions up to 10 km ahead. If the specified speed is exceeded, emergency braking is initiated.

The LZB 80 on-board equipment is used in main-line services, particularly in high-speed traffic or for the control of trains with long braking distances. It is also in operation in the German S-Bahn (rapid transit) system, for example, in Munich.