Method for detecting a leakage of a track signal on at least one railway track (3, 5), a track signal being a signal transmitted via the rails (7, 9, 11, 13) 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 comprising at least two track sections (15, 17, 19, 21) being electrically isolated against each other, wherein the at least two track sections are adjacent sections being on tracks (3, 5), which are side by side, wherein at least one receiver (35a, 35b, 35c, 35d) is associated to each track section, the method comprising: transmitting a respective test signal (39, 50) via each track section (15, 17, 19, 21), wherein a time slot is associated to each track section (15, 17, 19, 21), wherein the respective test signals (39, 50) are transmitted via the respective track sections at their respective time slot, wherein the test signals (39, 50) are transmitted and/or generated by a controller only, when no railway vehicle is present on the respective track section (15, 17, 19, 21), wherein the same controller provides the signals for the track signals and the test signals, wherein the test signals (39, 50) include a signature, wherein the test signals transmitted via different track sections (15, 17, 19, 21) have a different signature, wherein the test signals and the track signals are modulated and the modulation frequency of the test signals is greater than the modulation frequency of the track signals; activating one or more receivers (35a, 35b, 35c, 35d) associated to the plurality of track sections (15, 17, 19, 21), wherein the plurality of receivers (35a, 35b, 35c, 35d) are adapted to receive the test signals (39, 50); receiving the test signals via the track sections (15, 17, 19, 21); determining the track sections (15, 19), where the test signals have been received; determining whether a leakage between a first track section and at least one second track section exists. transmitting a respective test signal (39, 50) via each track section (15, 17, 19, 21), wherein a time slot is associated to each track section (15, 17, 19, 21), wherein the respective test signals (39, 50) are transmitted via the respective track sections at their respective time slot, wherein the test signals (39, 50) are transmitted and/or generated by a controller only, when no railway vehicle is present on the respective track section (15, 17, 19, 21), wherein the same controller provides the signals for the track signals and the test signals, wherein the test signals (39, 50) include a signature, wherein the test signals transmitted via different track sections (15, 17, 19, 21) have a different signature, wherein the test signals and the track signals are modulated and the modulation frequency of the test signals is greater than the modulation frequency of the track signals; activating one or more receivers (35a, 35b, 35c, 35d) associated to the plurality of track sections (15, 17, 19, 21), wherein the plurality of receivers (35a, 35b, 35c, 35d) are adapted to receive the test signals (39, 50); receiving the test signals via the track sections (15, 17, 19, 21); determining the track sections (15, 19), where the test signals have been received; determining whether a leakage between a first track section and at least one second track section exists.