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Originally Posted by gros-beta
There's an another system. The loco is detached fron the train and advances a few meters. It take an small switch, the loco is found on the way right at side and it go to an another switch for going in front of the train.
This system is used in off-peak hours. This is rare, but that exists
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gros-beta,
This system using a "runround loop" was once very common in Great Britain but now there are only a few places where it is used.
It is a very slow operation and requires expensive pointwork (switches).