Zugbeeinflussungssystem S-Bahn Berlin

Berlin was among the first to introduce an automated train protection system based on metal bar at the height of the first bogie where the trip cock is placed.

[note 1] The metal bar (also named "Streckenanschlag" / track stop collar) folds away to allow passing.

[4][5] Prolonging the old admission was expected to be unlikely to be done for more than three years making the ZBS train control system a requirement for any movement authority in the S-Bahn rail network presumably by 2018 and no later than 2020.

[5] The allowance for the continued usage of the old track stops was originally limited to 2014 as it was expected that the migration to the new system would be complete until then.

To increase throughput on the main lines the infill balises can send an upgrade message to the cab signalling electronics.

Given the lower maximum speed of the rapid transit system the Eurobalises can be placed at shorter distance (every four sleepers).