I'm thinking that helmets should adapt a dual-visor type of slide. One visor is clear, while the other is tinted. The tinted one is atop the clear one. So during nighttime the rider could just slide up the tinted shield and view the road with only the clear shield down. While during the day the rider could simply just slide the tinted visor down to cover the clear visor for sun protection.

Why can't they do something this simple? =b

Anyway that's just a thought.

God bless and take care all! :)

you might want to check this out...
Caberg Justissimo (http://www.designerhelmets.com/proddetail.php?art_no=CBJUST08&prod=Justissimo&cat=Caberg)

Nice. Schuberth helmets has one too. But it'd be nicer if there is a full-sized tinted visor atop the clear one so that the rider's face can be fully covered during the day.

God bless.