An empty train is read as solitude on your journey, travelling a path no one else is on. Tradition links it to loneliness, or to quiet independence and space to think.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.