Well I have put them to the test three times down here now amongst fairly heavy tourist traffic and all I can say is I am very encouraged, although you sometimes think to yourself is everyone being good today or is it my imagination, but one thing that is concrete and that is I always try to make eye contact at intersections and I can say that when I do they are always already looking at me. Now that is different. Its only got to wake up one wanker. mikeg
They flash your headlights between approx. 30% and 100% at 180 to 200 cycles per minute. Also they have a light sensor on them so only operate in day time. mikeg
Billy
I have mine on the low beam, its an apparent flash because of the modulation of light intensity. The reason they do not go off completely is so the lamp does not get stressed and reduce life