...rate is the most eye catching. 10/sec? I plan on making an LED bike light to help alert cars and make myself more visible during the early morning or twilight when people are not quite awake, or not paying attention as well. I have to ride in early to be on time for work and don't feel like spending 0-500 on a commercial light when I can build one of my own for . Of course the flashing rate has to be legal and I don't want to cause seizures either. I have super bright LEDs already picked out in both White and Blueish Green taking advantage of the Rods and Cones sensitivity within the eye, now I just want to get drivers attention via the flashing of the lights but want the optimum flash rate... Data behind your answer is always helpful. Thanks!