Factorio train signals reddit. Reply reply More replies More replies More replies .

Factorio train signals reddit. Screenshot 7:Solution - Build a rail signal below the cyan train. The signal after intersection is red, because it sees the train. So if both paths are open, the chain signal will be green. Chain signals are nothing more than "look ahead" boards such as those you see on the highway. One signal alone makes a one way track. The reason why you need signals on both sides is because trains will only pass a signal if that signal is on the right side of the train (relative to the direction it's currently chain signals are different from regular rail signals. This allows trains to occupy multiple blocks, but also increases the capacity of the network by decreasing the empty space between trains. - This can only happen on shared blocks, where a shared block is any block where tracks cross and trains can come from and go to different directions. Place a chain signal going INTO the Y and RAIL signals on BOTH EXITS from the Y. Simplest explanation I know of for signals - Determine the longest train you'll use and stick to it. Regular rail signals indicate that a train can and must wait in that spot until the block ahead is clear. Make the distance between signals a bit longer than your train size Wherever you can't fit a train between two signals - mostly in junctions - make the signal at the back of the train a chain signal instead of a regular signal. It's quick and simple and is by no means the definitive example of best practice when it comes to absolutely maximizing train movement. You really want to be able to fit an entire train in a block, if a train overlaps blocks it can cause them to get stuck. If a train is stopped in that junction, then those signals will stay red. If the train refuses to enter the block, then make another block after the signal large enough to fit the train, it's probably getting blocked by another train on the track off screen. Intersections need special attention. If you want a train to STOP at the NEXT signal, use a normal signal. There are two rules which you will find resolve 99% of “no path“ issues: immediately before two (or more) tracks join, place a train signal on each track just before the junction. The goal of a chain signal is to not let any trains end up stopped in there. When a train approaches a rail signal it wants to pass, it makes a decision at the last possible moment it could brake to come to a complete halt at that signal (you can visualize this in-game by pressing F4 (Debug options) and enabling show-train-braking-distance – any blocks between that red dot are either reserved or occupied by the train A block signal stops a train if the segment immediately after the segment is occupied, and only then. This means that a chain signal will only let a train pass through its block if the The train is always thinking ahead to wherever its closest stopping point is, and if it sees a signal, it either reserves that block if it can, or if it can't, it starts stopping right then, so that it doesn't blow through the signal. One block is either empty or occupied by one single train. So, chain signals on the outgoing portion of that block are bad and will make things worse. That's it. That second train completely blocks the trains in the stacker from using any other stop. The purpose of this is to prevent a train from occupying intersections. If a train is anywhere in that junction, then all signals leading into the junction will be red. This is a basic guide to help educate you on how signals work and some of the pitfalls and things to look out for. Why this example is bad - Intersections should be guarded on all sides, chain signals should be used going in. If both signals are red, the chain signal will be red. The train ENTERING the Y will stop or proceed depending on the path it wants to take. com Dec 26, 2024 · A signal is dividing rails into blocks. A chain signal before the start, a train signal after the end. Train Help! Iv'e built a queue area for my trains. It all becomes clearer if you think backwards. Reply reply More replies More replies More replies. You put a chain signal entering an intersection, and a regular signal exiting the intersection. Signals act as barriers, dividing a train track into zones of mutual exclusivity: only one train can be in any one zone at a time. A chain signal stops the train if the next signal ON THE TRAINS PATH would block the train. This tells a train at the CHAIN signal that there is one GREEN exit and one RED exit. You can see how the upper track loops back, so that entire section is one block. i've tried all possible placings of pathing and blocking signals, what do i do? A rail signal stops a train if it is red, allows a train though if it is green, and turns yellow if a train is going too fast to stop. If your train is going to leave the next block passing another chain signal, it takes into account if THAT chain signal would tell it to stop, and so on. Chain signal answers to a single question as well: what does the signal ahead of it say? If a train sees a red signal, it cannot drive. Regular signals look at their own block, and let trains through if they have space to hold a train. Thus, if a train is occupying the exit, a train won't enter. Mouse over a train to visualize where it is going (or trying to go, if stopped by signals. -Start with a chain signal then a May 27, 2017 · Re: Those damn train signals by vanatteveldt » Sat May 27, 2017 7:52 pm - You need to avoid a situation where a train waiting at a signal can block another train that wants to go a different route. If a train is in ANY part of blue, the upper signal will be red. The signal before the intersection is green Clarifying that you need rail signals BEFORE the green line and chain signals at each spot in the stacker AT the green line with enough space in between the rail signals and the chain signals to fit a train. Aug 13, 2021 · A couple of tips: -Check the direction of the train and the side you have to place the signals -Check the coloured parts of the rails when you place the signals. The reason, as I understood it, for a chain signal on an intersection is to prevent the train sitting in the middle of the intersection when it’s exit is blocked and thus blocking the other routes in an intersection. If a block is occupied by a train, the signal that's guarding access to this block is red and blocks access, otherwise it is green and allows access. -Rail signals simply tell a train to not enter the next block if there is currently another train in it. -be sure a train never has to stop on a junction -> keep the braking force in mind and the lenght of the train -> a junction always has a different colour than the rails before or after the juntion. C, Purple watches the red section and the orange signal B. If you want a train to PASS at the NEXT signal, use a chain signal. Most people seem to build signals one train length apart or more. The way I think of train signals. Just signal everything like normal, but use chain signals in place of rail signals. If there is a regular signal on both sides, a train ahead, and your train arrives in an intersection. A green rail signal says there is no train in the next block, and a train can pass it. To also hijack the top comment. That means a train may only pass the signal if there is an open path further north. In other games with trains, the optimal distance is usually more like 1-5 train car lengths, depending on how everything works. Oct 31, 2024 · Welcome to Reddit, Become a Redditor 169 Question Train signals confusing (i. It will only work if you have more train stops than trains, and it can still deadlock if you're not careful. A chain signal, on the other hand, prevents a train from entering a block if it wouldn't also be able to leave it. it) submitted 2 months ago by HyperactiveMouse 77 comments share save hide report I hope this helps someone out there who doesn't understand trains and how signals work. So yes, if you have a long straightaway, and you want more than one train to be on that straightaway at any time, you must divide it with signals (typically at regular intervals of the maximum train length you If a train is in any part of block (Even if another train wants to go somewhere else) that signal at the beginning of black will be red. Use one way tracks to prevent deadlocks, chain signals on any two way tracks between. factorio. In other words, if the train would need to stop in the segment immediately after the chain signal. Screenshot 8:How I would Signal that intersection Screenshot 9:Solution - Build one rail signal right in front of the cyan train to turn the middle into a segment. Thats where you'd want to use chain signals like in the OP. Signals C and D (Purple and Blue), denote a one-way rail. If the train needs the occupied path, it will wait at the chain signal. That means only trains coming from the north, can pass signal D, and only trains coming from the west can pass Signal C. Two signals, one on each side, makes a two way track. If one signal is green and the other is red, the chain signal will be blue. all trains insist on taking the first path (where the train is on the picture) even if another train is already in it, and even if the other queues are green. Chain signals are for splits in the track. ) A train can only pass a rail signal on its right. -Chain signals tell the train to not enter the next block if it won't be able to leave. Those rail signals separate the individual spots of the stacker into different blocks, ensuring that trains will enter the stacker as long At the entrance (I usually put it at the end of the last train component, make sure the train clears the signal) of every unloader/loader add a Signal If I do that a second train dropping off supplies stops right behind the one actively unloading. They're visualized with different colors while you hold a signal in hand. Finally bigger = less issues. A red signal says there is a train in the next block, and a train will wait at the signal until it turns green. See full list on wiki. If you block ONE of the exits (by placing an engine) the CHAIN signal will turn BLUE. This is a common misunderstanding of Factorio signals, so any tutorial purporting to help clarify Factorio train setups should not propagate this misunderstanding. If you are using bi-directional trains and rails remember to put signals both sides of the track Signals are on the right side for the direction of travel. Discussion regarding the potential collapse of global civilization, defined as a significant decrease in human population and/or political/economic/social complexity over a considerable area, for an extended time. Chain signals look ahead at the next regular signal, and only let a train through if that block is free. redd. qax dqiiu myeyimg mgtjd yzjq xpf gytrk oxfdn zbtkcz syorlpc