Not only do tracks cross, trains also share tracks and platforms. In Shanghai only Line 3 and 4 share tracks and platforms. Your map only shows ICE/IC lines, t

Not only do tracks cross, trains also share tracks and platforms. In Shanghai only Line 3 and 4 share tracks and platforms. Your map only shows ICE/IC lines, there are many more other lines which share the same tracks. This shows a more complete picture: https://www.deviantart.com/costamiri/art/Transit-diagram-of-regional-rail-in-Germany-2024-1006737243 https://www.deviantart.com/costamiri/art/Transit-diagram-of-... but it still doesn't show international trains and freight.