Thank you, great link!
Could you help me with another trouble? I've started a new map, created an one way railroad (no signals at all, just for a single train). Later I wanted to rework it for a two way track but signals don't work... Got two way signals at the station entrance, one way at the exit but trains are still turning around because the 2nd signal after the station exit doesn't want to let the train pass. I don't know why, I've done it exactly like on the picture one post higher. Thanks!
Question first are you using two separate tracks for segregation or one track diverging into a station with a throat entrance?
If you are using one station with two way signals either end of it, then trains will turn around when they reach the signal before the section where the other train is
To do a passing place/double platform you need to have the single track split into the two lines and place single directional signals either end of the line so effectively you have single track - split - double track with the signal on either line indicating which line is for which direction- then platform - then down to the signals controlling the exit from the station back to single track where the two running lines re converge.
If you do that then the single line between each station is controlled by the exit signal at the passing loop thus making a train wait for the other train in that section to reach the station, it also prevents that train from passing the entrance signal at the other end of the station loop backwards as that signal will not be in it's direction of travel, it will be against the direction the train wishes to travel in