Answer:
When it comes to me you go on red and stop on green.
You can drop me from the tallest building and I’ll be fine, but if you drop me in water I die. What am I?
He has married many women, but has never been married. Who is he?
I am enjoyed with a pot and some pointy sticks.
Marking mortal privation when firmly in place. An enduring summation inscribed in my face.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.