You are parked at an Albert Heijn in Alkmaar and have just signalled in good time (right before departure). A cyclist right behind you suddenly has to brake. What does that indicate?
You did not actually give way to other traffic, despite signalling correctly
Nothing serious — after all you had signalled properly, so you had priority
Explanation
False — trap: indicator confused with priority. Signalling is an announcement, not a right of way; you must actually give way to other traffic (Book p.134).