Are you BLIND???

I saw something funny yesterday at a fine eatery's drive-through. As I pulled up to the window to pay, I noticed that there was a sign there. It read: Braille and Picture Menus Available Upon Request. Now I realize it was a big sign, but two things struck me as rather odd. First and most obvious, why have a sign for a blind person? Second, why have this unusual sign in a drive-through?

Not really thought provoking I know, but I wanted to share it with you.