A detection method for detecting presence of a railway vehicle on a railway track section, the railway track section being placed on a track bed and having two rails, the method comprising the following steps:
- emitting an emitted signal into at least one cable placed across the two rails and buried under the track bed,
- receiving a received signal related to the emitted signal having passed through the cable, and
- according to the received signal, determining between an unoccupied state where no railway vehicle is present on the track section, and an occupied state where the track section is occupied by a railway vehicle.