What is a mile marker? Something to do with highway/freeway?

Question

If its 150 mile marker and you reach 86 mile marker, what is the total distance you traveled if 1 mile marker is 1 mile?

HELP PLZ, drivers!

Answer 1

Yes, mile markers are usually placed 1 mile apart.  They are usually measured from something significant as well (like a state border).

Answer 2

Mile markers indicate the number of miles you've traveled or miles left from a State border.

It depends on which direction you're traveling. For example, if the numbers are going up, you've traveled x miles from the state border you just crossed. If they're going down, that's how many miles are left until you get to the border.

Answer 3

They are also helpful indicating where a car might be broke down.

Answer 4

mile marker left over is 64