Talk:Railway network

this sentence is not understandable: Rail signals can be built only next to the END of the rail. This means there are at most 4 signals per rail (2 at each end). Ssilk (talk) 12:08, 26 November 2013 (CET)

http://www.factorioforums.com/forum/viewtopic.php?f=18&t=1993&p=14666#p14666 Every signal in factorio is a block signal. Every single rail segment belongs to a block, even if there is really no way for the train to get there. Think in electric terms: if there can flow electricity from one track-segment to another, the segments are connected and build a block and if there is a train on it, the signal before this connected block it shows red!!

Edit: maybe this explanation is better: you can see the signals as insulators which send a small voltage into the next two lines of railway tracks. A train anywhere in the next block will connect the the two railway tracks, signal goes red. Ssilk (talk) 11:06, 12 January 2014 (CET)