When are you obliged to signal before moving out of your lane for the purpose of overtaking?

1. You are not obliged to signal before deviating, if there are no other vehicles near you.
2. Correct answer: You should signal at a reasonable distance before you begin to move out.
3. You should signal at least five meters before deviating from your lane.
4. You should first change lanes and then signal.

WhyFor an overtake, signal in advance, at a reasonable distance before moving out. Signalling only once you are already moving out, or not at all, is wrong.