Originally Posted by TedC
that doesent help you at a standstill...like at a traffic light
Their latest version has some reserve to keep it flashing for a while even when stationary. There are other issues, though, such as being able to fit the magnet close to the coil to achieve best performance, possible interference with bike computer, snapping spokes etc. For an earlier discussion, see this thread:
http://www.bikeforums.net/showthread.php?t=228300
--J