Answer:
When it comes to me, you go on red and stops on green. What am I?
I have no bed to sleep and no palace to live. I don't have a single coin but I am known as king. What am I?
Some will use me, others not. Some have remembered, others forgot. For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. What am I?
I go up when the rain comes down. What am I?
I've been around for millions of years, but I am no more than a month old. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.