Just read up on it and it is the 'rail seat' option. I would imagine that would be the only type of safe standing that has a chance of getting a safety certificate in this country. It's really not that different from people standing in front of their seats but at least it would allow the...
Doesn't the definition of 'safe standing ' imply no change in capacity ? These are still individual spaces of the same capacity as a seat where the seat can be used (for e.g. European games) or not.