Sorry if this has been discussed before but I did search and couldn't find anything.
Anyway, I was driving to work this morning when I came up on a very new looking Honda ST1300. As I passed him I noticed he was flashing his headlights at me. I couldn't figure out what I had done to tick him off so I just kept going. He must have sped up some because I noticed him again behind me a mile or so later and his headlights were still pulsing on and off. It became apparent that he was not doing this manually but must have installed something on his bike to do this constantly. It was extremely distracting. So my question is, has anybody heard about this and is it legal? While it may have made him more visible it was at the expense of taking my attention away from other things on the road, so I personally think it is dangerous and should not be legal, especially on the freeway where you may be riding long distances following the same vehicles. Also, I think it's just going to tick off most cagers and the last thing we need is something else to turn cagers against us.
Any other thoughts?