[EricH]

Actually... it isn't listed in the rules. Pick an orientation that works.

However, the lights do need to be visible (<R53>). If they are not visible for some reason, the field crew cannot diagnose what's wrong when your robot decides it's not going to work on the field.

Also, visible does not mean kinda sorta if you do a headstand inside the robot with your feet on the floor outside the robot. Ideally, you should be able to stand a few feet away and see the lights. Not quite practical, maybe, but if seeing the lights involves "unnatural" body positioning or being inside the robot, expect that you'll need to reposition.