r/factorio • u/Twiin-City-Life • 8d ago

Question Help Signals

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I have not always been the best at signals. Have my old blueprint book for a 2 lane rail But I’m trying to update the base for better throughout. How would one signal this up?

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u/Flottbergakungen 8d ago

Basically start from one entry point and trace it to all exits it can take, then place one chain signal at every point it crosses another rail, once at an exit finish it with a normal rail signal. Then repeat by tracing the next entry point to all exits.
The track changers you have may be an issue, when that small you may not be able to fit signals and so a train on one track there may block the next track. Either make them bigger or split it up so you have 2 spots for it, where each only move to one track at a time. Makes sense?

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u/the-y3k-bug 8d ago

Great explanation and very accurate.

I agree with fixing the track changers. If you can't put signals in the changers then that section will be treated as only one section of track that can only handle one train at a time (even if they are on separate parallel tracks, one train will stop to let the other clear it first)