Answer:
When it comes to me, you go on red and stop on green. What am I?
I can wake you up in the morning but I require no electricity or winding.
I have an eye but I cannot see. What am I?
A sport with love and service played by singles and pairs.
I am a rock group that has 4 members, all of whom are dead, one of which was assassinated. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.