ZUB 1xx

In the 1980s the manufacturers of railway signaling systems developed electronic versions that could be deployed in the same pattern as the traditional train stops.

The Danish State Railways had been evaluating a modern train protection system since 1978.

It was activated in 1992 and by 1996 the complete network had been converted to the ZUB 123 train protection system.

The train transmits a 100 kHz AC signal to power up the ZUB balises.

[1] With "balise" being a French term the German specifications have used the word "Gleiskoppelspule", literally "rail coupling coil" for their digital beacons.

ZUB balise along with Integra-Signum magnets in the Swiss ZUB 121 system
rail coupling coil in the Danish ZUB 123 system