Filtering on a motorcycle is what life is all about. Without it there is no reason to buy a bike for commuting. Here in the UK it is legal, as long as you do it with care and consideration for other road users - and, of course, your own safety.
I've included some bends, and lots of water, just for fun.
The last few seconds of this clip suggest that filtering is not always appropriate.
(Still on the Silver Wing, by the way)
