Translations:How to operate relay line block equipment/57/en
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SBL-Signal 2955 between Dąbrowa Górnicza Ząbkowice and Dąbrowa Górnicza. It displays S2 aspect (Clear). We can see another SBL-Signal of the opposite direction. In the background there is a relay container controlling both block signals.
The automatic blocks signals themselves are always train-controlled and cannot be operated in the signal box. They are not equipped with a replacement signal. At the same time, the automatic block signals always have the functionality of a main and a distant signal at once.