At roadworks on the N35 near Enschede you see a round sign with a red border: two cars side by side, one of them crossed out. Which appendix-1 category does this overtaking ban belong to?
Category C — closure, because it is a round prohibition sign
Category F — other commands and prohibitions
Explanation
Wrong — trap: appearance-is-category reflex. Shape (round, red border) matches C, but F1 is listed literally in appendix 1, chapter F.