Cyclists prefer either early mornings or evenings to do their exercise. The natural light is very low at both of the time periods which increase the possibility of someone coming from behind and hitting them. This cyclist's jersey has LEDs which light up at the back of the t-shirt and when the wearer raises her or his right hand, the light behind the right gets switched, and vice-versa
Normal
As soon as the t-shirt is powered ON, the "X" mark starts glows.
Right
Lift your Right hand and the Right indicator starts blinks.
Cycling Jersey
Life your Left hand and the Left indicator starts blinking