It the starting position pole for identifying the starting lineup of cars at a NASCAR track.
What Is This A Picture Of & What Is It Used For?
I believe it's a starter light used for drag racing, not quite sure, but I believe that's what it is. Or, it's what everyone else is saying.
I think Drrogers is right. It's the starting position pole for identifying the starting line up of cars at the NASCAR track. Peace
I think they are commonly called a scoring pylon. Pic is Bristol scoring pylon 
I never knew the name of it.. But it's a scoring tower? It lists the standings.
It looks like the line up tower but I am gonna be honest here I do not know the name
Is it called the track positioner. I know it list the staring lineup at the beginning of the race but it then tells everyone's current position.