Translations:Train interlockings/5/en
Track part

The track part consists of resistors, called electromagnet, which is located at a distance of 200 to 150m in front of the signal or autoblock.
Train part

The sensors of the train section are covered by a magnet which emits a radio pulse to activate the SHP control in the driver's cab (driver vigilance).
Both track-side and train-side parts are tuned to 1000 Hz. If the driver does not press the vigilance button, the emergency brake is activated.