Bulldog Tic Tac Toe intersection

Smart setups of railway stations, intelligent routing, solutions to complex train-routing problems.
Please provide - only if it makes sense of course - a blueprint of your creation.
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zOldBulldog
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Bulldog Tic Tac Toe intersection

Post by zOldBulldog »

Designed with the goal of achieving a balance of compactness, high throughput and supporting any size trains.
bulldogTicTacToeIntersection.jpg
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Factorioprints page: https://factorioprints.com/view/-LPNlfISFe-D9aoDepBp

Some considerations:

- The return loops on the inner lanes before entering the intersection help reduce traffic that goes through it. The same for the outer turns. Using similar loops on your lines will allow you to use mainly exit/merge/lane changes instead of intersections, which (at least for me) has significantly improved my network's ability to keep trains running at full speeds.

- It is Left Hand Drive (LHD). Why? Because even though in real life I drive on the right lane, I noticed that the left exit from trains makes LHD much more natural in Factorio, as LHD typically leaves the things you want to access on the side of the train that you exit. Also, LHD allows placing the signals on the inside, which leads to cleaner interactions between rail and neighboring belts/structures/water. So, after a little RHD use I ended up switching to LHD for my rails.

- You need lane changers (between inner and outer lanes) a train length away from this intersection. So, if you are using 4 locomotive 8 wagon trains you would roughly need between 2 1/2 to 3 chunks of straight rail before the lane changers.
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zOldBulldog
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Re: Bulldog Tic Tac Toe intersection

Post by zOldBulldog »

Updated to v2.

Higher throughput (Trains per minute: 60 random, 109 left turn, 35 right turn), optimized for well designed LHD rail networks while retaining compactness and flexibility.
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