GlossaryEN1 min readUpdated: Jul 19, 2026
signal box
A signal box is the operational nerve centre of a railway line or station, where train controllers (signallers) manage all switches (points) and signals to direct train movements.
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Source: https://de.wikipedia.org/wiki/Stellwerk
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A signal box is the operational nerve centre of a railway line or station, where train controllers (signallers) manage all switches (points) and signals to direct train movements. From this control point, staff clear track sections, set routes, and authorize signal aspects to regulate train sequence and spacing. Historically operated through mechanical interlocking (lever frames), modern installations use electronic systems. During a general renovation of heavily used lines, signal boxes are often completely renewed and digitalised. Without the signal box's coordination function, safe and efficient railway operation would be impossible.
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