In real life signs tell us what to do or point us in the right direction so pay close attention to any signs you see in your dream because they are signs you are sending yourself. What does the sign say? How can you apply the message of that sign to your life right now?
If you are unable to read the sign in your dream then you may not be getting a message someone else in real life is sending to you. Or you may not be listening to yourself, you may be ignoring your intuition or going against your gut right now.