Question of the day:  why do bicycles not have turn signals like cars and motorcycles?  Lights are on everything and anything, and even make an appearance on bikes in the form of headlights and taillights, accents on wheels, but yet the mighty bike has not evolved to also feature turn signal lights.  You know, a blinking light that alerts traffic of your intended travel course, so that you don’t have to rely on archaic system of hand signals, leaving only one hand to manage the balancing of your body on two skinny tires.   You would think that if a rider can manage changing gears, they could manage flipping a switch that controls a much used, much needed, and very important road communication.