Its one corner. But because the line is split like that, you can either take both halves and effectively pretend it is a single line all the way through, or you can take only the front half or only the back half.


For example, if you start this turn in the middle space of the row just in front of the corner -- on the line. There are 4 ways into the corner for zero wear at 60 mph.


1) take both lines through the two 40 spaces
2) take the two outside 60 spaces, then take the second line through the 40
3) take the first line through the first 40 space then move to the last two 60 spaces
4) take the 60 spaces all the way around


Obviously choice 1 is the best, but sometimes you are not lucky enough to get the line entering the corner, or sometimes someone spins in that last 40 space... so it gives you more options through the corner.