No traction control in IndyCars. No real need really, they're pretty underpowered with a lot of downforce. Ryan Briscoe probably wishes they had it. Champ Cars is their final days allowed it though.
I didn't realize the American LeMans series allows traction control. I haven't watched much of that series this year due to the low car counts. Recorded Road Atlanta but deleted it afterwards when I realized the last hour or two was scheduled as a new program on my guide and I hadn't scheduled it to be recorded.
But it ended up being called early for rain so I had actually gotten it all, and there isn't going to be a reair...
There is no traction control in the Grand-Am Rolex series, the North American sportscar series I usually watch.