RAILWAY SIGNALLING + SAFETY INSTALLATIONS (RAILWAY TRANSPORT)
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BTRAILWAY TRANSPORT (TRANSPORTATION AND TRAFFIC)
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UDC656.25
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Descriptor GERSIGNALWESEN + SICHERUNGSANLAGEN (EISENBAHNVERKEHR)
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Descriptor ENGRAILWAY SIGNALLING + SAFETY INSTALLATIONS (RAILWAY TRANSPORT)
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Descriptor FRESIGNALISATION DE CHEMINS DE FER + INSTALLATIONS DE SÉCURITÉ (TRANSPORT FERROVIAIRE)
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Variant GERSICHERUNGSANLAGEN (EISENBAHNVERKEHR)
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Variant GERSIGNALTECHNIK (EISENBAHNVERKEHR)
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Variant GERBAHNSICHERUNG (EISENBAHNVERKEHR)
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Variant ENGSAFETY INSTALLATIONS (RAILWAY TRANSPORT)
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Variant FREINSTALLATIONS DE SÉCURITÉ (TRANSPORT FERROVIAIRE)
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Variant FRECHEMINS DE FER/SIGNALISATION DE CHEMINS DE FER (TRANSPORT FERROVIAIRE)
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Variant FRESÉCURITÉ DES CHEMINS DE FER/INSTALLATIONS DE SÉCURITÉ (TRANSPORT FERROVIAIRE)
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Variant FRESIGNAUX DE CHEMINS DE FER (TRANSPORT FERROVIAIRE)
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NTBLOCK SYSTEMS + SECTION BLOCKS (RAILWAY TRANSPORT)
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NTFIXED SIGNALS (RAILWAY TRANSPORT)
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NTSIGNAL BOXES + POINTS OF SWITCH (RAILWAY TRANSPORT)
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NTTRAIN TRAFFIC CONTROL SYSTEMS (RAILWAY TRANSPORT)
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RTTRAFFIC SIGNALLING (TRANSPORTATION AND TRAFFIC)