Reading the posts, I'd say that there needs to be a good description of a TNT. Atco,Grove and Cecil, you get mixed in with the days program, whatever that is. This turns out to be 3-4 passes providing the "Program of the Day" is running on schedule with no delays. At least with Atco, if you pay for one of the days "Programs" and go out the first round, you can get some extra passes if the TNT is scheduled for that day. There seems to be a liberal meaning of TNT from what I read here. There are also closed TNT's, that allow only a certain number to sort out their cars for the day and that price is subject to the amount of racers that show up and pay in advance. Once the count is met, stragglers can come in and pay the fee.