
They don't have to be just a pair, there can be any number of chain signals in a row (hence the word "chain"), but there does need to be a regular rail signal eventually. For a chain rail signal to work there has to be a rail signal down the line ahead of it, so in this sense they are paired (one before and one after an intersection for example). What is the difference between having a rail chain signal by itself and paired with a rail signal?Ĭhain and rail signals do indeed pair up to some extent but not in the way you're thinking. Also further north from train stop A, on the orange track. But I saw one rail chain signal alone on further south from train stop B, in the blue tracks comparing it to my diagram. Because pairing up one chain rails makes the tracks to be mono-directional, but two pairs of them will make them bi-directional again just like my original setup. From what I derive from his screenshot I assume that chain rails are used in pairs with rail signals? That is why there are two of them on train stop B, north and south side. Terraflare wrote:What I know about chain signal (according to tutorials I saw, I have not used this at all) is that it prevents deadlocks by stopping the train earlier so it will not stop at the exact block that has trains in it. What is the difference between having a rail chain signal by itself and paired with a rail signal? What I know about chain signal (according to tutorials I saw, I have not used this at all) is that it prevents deadlocks by stopping the train earlier so it will not stop at the exact block that has trains in it. Oh, and while we're at it, may I ask about Kelderek's design? I did not actually placed the rail (and chain) signal exactly according to his layout, since my actual rail tracks has a bit more tracks up to the north, but since I'm certain the problem is on the south side, I only drew the south side. Thanks all people, you guys saved my factorio day today. Now that I know that, my problem is fixed! As I posted this my 3 trains have been up and running, and not because I am experimenting and stumble upon a working track like last time, but now I know for sure how it works. If I place a rail signal only on one side, the rail that is usually bi-directional now becomes mono-directional. But I just knew that a rail signal also determines the direction. The thing is I created a rail, determined the stations, placed the train, and it's not so hard to determine the direction once it's been done. Railway.jpg (87.17 KiB) Viewed 11924 times

Is there any way out of this predicament? I'll keep trying as I post this thread, I'll post any uodate Now call me dumb, but I did reverse everything that I did back to the way it used to work. So I thought, what the heck, I'll just remove the entire blue railway intersection, along with train stop B I was pissed, don't understand what's holding it. And so I decided to take out the rail signal Z and Z1.
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As Blue railway is not yet operational, but the train is at train stop D,and because I thought Z1 detected the train ahead (blue train at Train Stop D), it goes red. Red train begins to depart to train stop C, but halts at rail signal Y1 because it's red, while all the way until C is clear, however Z1 is also red Red train goes to train stop A, orange train halts at rail signal X Everything is normal on orange railway and red railway, until I add blue railway in the mix Train Stops B & A may appear as 2 separate track, but it actually merges together The train has 2 locomotive on each side, because it is bi-directional If there's a train on the rail ahead after the signal, it will glow red. Still I fail to understand the mechanic of this rail signal. Read user and official guide on train and railways

Watched rail & train tutorial on youtube I am currently on a "rail signal" problem.
