obligation
prohibition
What does this sign say?
You mustn't litter.
What does this sign say?
You must/ have to put trash in the trash can.
What does this sign say?
You mustn't park here.
What does this sign say?
You must/ have to go straight (ahead).
prohibition/obligation
Obligation
What does this sign say?
You must/ have to wash your hands.
What does this sign say?
You mustn't touch this.
What does this sign say?
You mustn't smoke here.
What does this sign say?
You mustn't camp here.
What does this sign say?
You mustn't take a picture.
obligation
..
What does this sign say?
prohibiton
What does this sign say?
You mustn't eat here.
What does this sign say?
You must/ have to fasten your seat belt.
What does this sign say?
You must/ have to turn left.
What does this sign say?
You mustn't use phones.