According to another aspect a system is provided for detecting a track signal leakage of a track signal on at least one railway track, a track signal being a signal transmitted via the rails of a railway track to detect the presence of a railway vehicle and/or transmit a provide information to a railway vehicle, the at least one railway track comprising at least two adjacent track sections being isolated against each other, the system comprising: a controller according to an embodiment disclosed herein; at least one transmitter for emitting a test signal via a first track section, the at least one transmitter being connected to the controller; and a plurality of receivers for receiving the test signal via one or more track sections, wherein each receiver is associated to at least one track section.

A system includes a track system having a first rail and a second rail, a track activity detection circuit electrically connected to each of the first rail and the second rail, a track shunt circuit electrically connected to the first rail and the second rail, wherein the track shunt circuit is configured to selectively electrically connect the first rail and the second rail through a shunt. A method includes receiving an instruction to apply a shunt between a first rail and a second rail of a track system, and electrically connecting the first rail to the second rail through a controllable track shunt circuit.

Method for detecting a track signal leakage on at least one railway track, a track signal being a signal transmitted via the rails of a railway track to detect the presence of a railway vehicle and/or to transmit information to a railway vehicle, the at least one railway track including at least two track sections being electrically isolated against each other, wherein at least one receiver is associated to each track section, the method including: transmitting a test signal via a first track section; activating one or more receivers associated to the plurality of track sections, wherein the plurality of receivers are adapted to receive the test signal; receiving the test signal via one or more track sections; determining the one or more track sections, where the test signal has been received; determining whether a leakage between a first track section and at least one second track section exists.