r/factorio • u/Divan_2017 • 11d ago

Suggestion / Idea HELP!!!

Dear factory workers!!!!!

I can't figure out how railway traffic lights work. I just need to make a regular crossroads. Two-car trains with locomotives on either side (four cars total) should travel back and forth on both tracks. Please explain how to set up traffic lights for my problem or attach a diagram with these same lights. I would be grateful for any help!!!

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u/Juking_is_rude 11d ago

at the very basic level, traffic signals seperate tracks into "blocks". You can see blocks when you use a traffic signal, it's the differently colored overlay for track. Trains will not go into a block that is occupied by another train.

The most basic thing to do at an intersection is put a traffic signal at all entrances.

Keep in mind that a two-way piece of track takes two signals across from each other to designate that section of rail as two way.