The device (110) in order to regulate the power emitted by at least one track circuit of a block (42) including: - a processing means (124) configured to receive at least one data item relating to travel over the at least one section (42) and to determine at least one power reference (p) to be transmitted by the track circuit from at least one data item relating to the circulation and a predetermined relationship taking into account the said at least one data item relating to the circulation and - a means of modulation (122) in order to regulate a power of emission of a signal emitted by a transmitter (em) of said at least one track circuit as a function of the rated power (p).
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