Ok so in German, there's "Hier wird nicht geraucht" (No smoking) but we don't have that form in English. Does that form exist in Dutch, or is this the ONLY way you'd say "Niet roken"?
If you wanted to say, "Hier wird nicht geparkt" (No parking) then would it be like, "Niet parkeren"...?
Yes, "niet roken" en "niet parkeren" are definitely the most commonly used ways to phrase this, on signs at least.
You could also say "Hier mag niet worden gerookt/geparkeerd", if you don't want to be as bossy.
Does this mean smoking as in cigarettes or can it also be used to describe fires etc.?