I put together a procedure, start to finish, and shutdown, for a potential driver awhile back, and this how I saw that situation. This was for a particular track.
THE TURNOFF DIRECTION IS TO THE LEFT, SO EASE TO THE RIGHT OF YOUR LANE SO THAT YOU DON'T HAVE TO TURN SO SHARP TO MAKE THE U-TURN AT THE END OF THE TRACK.
IF YOU ARE IN THE LEFT LANE AND NOBODY RAN AGAINST YOU, THEN IT'S OK TO GO TO THE RIGHT LANE JUST BEFORE YOU TURN OFF, AGAIN SO YOU CAN MAKE A WIDER U-TURN
INSTEAD OF A SHARP ONE. IF THERE WAS SOMEBODY RUNNING IN THE RIGHT LANE, DON'T GO THERE UNLESS HE /SHE /IT IS ALREADY IN FRONT OF YOU AND YOU CAN SEE THAT
HE CAN'T HIT YOU. IF YOU CAN'T SEE HIM, DON'T GO IN HIS LANE.
Any comments on that are invited. I would prefer to give myself and anyone who might drive my car the best advice. I have never seen this covered exactly by the rules.