Dream books link a speed camera to the feeling of being watched and judged for how fast you move. It often reflects worry about being caught out over a shortcut.
When this appeared in your dream, what were you feeling?
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.