If you are downloading a pre-made "100% save" file from a community site, you must place it in the correct folder to make it "work":
Here are answers to some common questions about Fernbus Simulator saves. fernbus simulator save game 100 work
All features will remain unlocked, though some cities may still need to be "visited" to show as fully explored. Option 2: Download a 100% Save File If you are downloading a pre-made "100% save"