Never. I was kid In the back of the truck openly in the wind. It was in 1980's. Best I ever had. in 2000's really suck and you were not allowed to. Its against the law right now. Too strict. I hate 2000's and beyond! Sad!
Once again I fell down the martial arts rabbit hole and am plumbing the murky depths of the internet's various martial arts and fighting crafts echo chambers.
If you're not actively involved and only get up to speed every few years or so, you can see the tide of public opinion flapping worse than my dong while I'm skipping naked down a hallway.