Building 101: double bridges and you
Introduction
From the very start that you start building networks in OpenTTD you’ll need to have different tracks crossing each other. When you just start out this will be done by just simple level crossings which aren’t very efficient (except when using YAPP/PBS), later on you will start using bridges and tunnels to do this so different tracks don’t influence each other. Because bridges and tunnels don’t allow signals on/in them you will soon notice that you get slowdowns at them, the common solution is to use two bridges or tunnels for the same line and have their combined capacity compensate for the lack of signals. Unfortunately there are proper ways to do this and wrong ways to do it. Underneath I will discuss these and explain what you should and shouldn’t do.
Read the rest of this entry »
