![](https://image.tmdb.org/t/p/w500/i0bQzTrq4NuRiFVDDwabGiLYQc3.jpg)
Documentary
20 minutes
This film shows the operating procedures necessary for protection on a double track in the event of a mishap affecting the opposite line. We see the safety measures to be taken by station staff in such an emergency, and then how normal working is resumed.
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