According to the BBC, Mira have developed a riding aid designed to help out bikers in certain situations. The situations it seems to be looking out for you are in your blind spots (plus directly behind you) with radar. It also monitors where you are and, with the help of GPS and a map, will advise on the safest speed by which to take a corner.
I have to admit that I am not too sure about these, considering all the problems I have had on the road are from people not seeing me, not from me missing them.
Full report here: http://www.bbc.co.uk/news/technology-12266406