if you are trying to be seen better or are concerned your hand signals are not going to be seen, maybe you should consider some reflective gloves?

http://www.copquest.com/12-2150.htm is one manufacturer. I'm sure that there are some clip on blinkies that could be sewed/clipped on somehow to one of those or a livestrong or similar wristband as well to increase your visibility even more....

Just a thought.