I have teeth but i don't bite. Who Am I ?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

What two things can you never eat for breakfast?

What is at the end of a rainbow?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

You can see it everyday, But cannot touch it at will. What is it?

What do you answer even though it never asks you questions?

It is always ahead of me yet I can never see it. What is it?