A problem is their with train simulator that the single line crossing is not possible in train simulator. Like on single track at station if two trains coming opposite site and one train is make to wait to pass another train but it isn't possible because it shows route blocked. Also after overtake if the train that overtake reached a station 5 minutes early and another overtaken train reach after 5 min on adjacent platform then also it shows route blocked. Like those two train shouldn't meet after overtake. Like on Hamburg Hanover route a fast service overtaken a slow service and reached Hanover at 18:00 and another overtaken service reach 18:05 then it isn't possible to put overtaken service on adjacent platform it show route blocked. Weather the fast service should have cleared the station then only slow service can enter or slow service should end one station before. Otherwise until the fast service is their on station the overtaken service can't enter on any of the platform of that station. It shows route blocked.