this are the most used train sets.

test1 - first one has several uncomplete laps, most of the time in the curves, 8 clockwise, 4 counterclockwise, a couple of corrections in the end.

test2 - mostly corrections from borders to midlle of the road, 2 straight lines, 5 corrections, all counterclockwise

test3 - two "complete" laps counterclockwise