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→Correct signals
===Correct signals===
Here are a couple of correctly configured signals, where "correctly" means that trains that just run past each other won't stop/block each other. (Obviously if a train needs to switch tracks other trains are stopped)
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For more examples of intersections, see [[Junctions]] page.
===Correct use of bi-directional signals===
To prevent trains from getting stuck nose-to-nose at bi-directional signals, they have to be placed very carefully. There are basically only two situations where they should be used: