I see these every time a bicycle path intersects with any kind of car or train infrastructure. It just seems really patronizing, as if we’re not capable of slowing down without getting off the bike; it also shifts responsibility onto the cyclists if there is a crash based on something arbitrary (mounted vs dismounted).
Oh, no, sir. That would be a crime.
I mostly use angle grinders for my sourdough. A bread can never be too hard is my personal opinion.
You must have the jaw muscles of a mastiff and the palate of beaver.