IN my case NEVER a dream sign has caused me to become lucid. It does not matter how many times I have been experiencing similar situacion in my dream, I do not become lucid. My lucid dreams count now is 82 ( I do no count those cases in which I have 3 lucid dreams in a row, in those cases I consider that I had just one LD) and in every case I new that I was lucid from de beginning without any obvious DS or RC..