FFS, will everybody shut up before 'they' find something new to ban!!!!!!!!!
They are legal, even solid black ones. However, I think it's more to do with the fact it's main purpose is a wind deflector not a windscreen as such on a sports-bike. Looking through it is not a requirement of riding the bike. Also unlike a visor it's possible to see ahead of the bike without looking through it when the visibility drops by moving your head.
On the other hand, the massive riot shields on the front of Harley road kings etc. in solid black would see you pulled pretty sharpish, at least I hope so......
