C-1 Turn right before the sign
What it means
Requires you to turn right before the sign, i.e. into the nearest road on the right before you pass the sign. Applies at the next intersection or at the place where it stands.
In the exam
The difference between C-1 and C-2: an arrow bent downwards (C-1) means turn before the sign, a straight arrow to the right (C-2) means turn after the sign.