We’re not sure yet, not as of Alpha 35. We wouldn’t doubt that CE-prOs would be able to build well with one-way doors but it’s more challenging for new players and there needs to be some path finding improvements and also UI fixes to make players aware of incorrectly built terminal areas. If we were to release one-way doors now I could see the backlog getting blasted, as you mention, with “pathfinding bugs” which are caused by dead end one-way door constructions (the same goes for one-way escalators). So, we need to make sure that a player can understand that they’ve deadlock something before it’s thrown in, and as I said we might need to do some path finding adjustments before. If one-way doors are possible it’ll reveal itself in the beta stage is my guess, but I’m also struggling finding real-world examples of where one-way doors are used in passenger areas on airports. Do you have any examples?