In addition to all that, flashing bike lights make for a terrible experience for other bicyclists unfortunate enough to be nearby. Again, at best itís merely annoying. Anyone whoís sat at a red light on a popular bike route can attest to the fact that itís frustrating and uncomfortable to have a powerful flasher going off right in front of you as you wait for the light to turn green. At worst it can be dangerous. When a rider with a flashing front light passes by going the opposite direction on a dimly lit or unlit street or bike path it leaves you temporarily blinded and vulnerable to hitting hidden objects and potholes in your path. Of course this can happen with bright, steady lights, but flashing exacerbates the issues.