Criticizes old signal system and describes advantages of new automatic system installed on electrified railroads of city of Berlin; details of signal towers, switch boxes, etc.
Automatic safety signals for the Berlin municipal railways
Die selbsttaetige Zugsicherung fuer die Berliner Stadtbahn
Glasers Annalen ; 102 , n 11
1928
11 pages
15 Figs.
Article (Journal)
German
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