i copied a blank file over into my track folder renamed it "tileifo" and put in these numbers:
friction 10.4 0
friction 1.5 2.0
friction 1.0 3.0
friction 1.2 10.0
roll_resist 20 50 0
roll_resist 70 100 30
then saved it and went onto my track in the game and everything goes white and there is no traction