yeah its a pretty loud click, as it controls the shielding which moves back and forth. I was worried about other drivers too but the shield limits the light to the top half of the reflector which points the light down. I wanted to purchase the 55w setup but was worried it would be too bright. The 35w kit doesnt appear to be too bright IMHO.

I know the reflectors on my Aprilia(motorcycle) are larger than the VX reflector and they are bright but anything to keep me alive and cars from cutting me off.