Scott Dixon, Dan Wheldon and Ryan Hunter-Reay helped IndyCar Series officials evaluate a slight modification to the 12-turn, 2.26-mile road course during a test on Friday.

Brian Barnhart, president of the competition and operations divisions of the Indy Racing League, the sanctioning body of the IndyCar Series, requested the course alteration in Turns 6 and 7 in an effort to potentially create a corner conducive to more passing.

"About halfway down the drag strip we go to the left and then do the loop around, which is our Turn 7, and head back for the Esses," Barnhart explained.

"I'd like to have our drivers try staying on the drag strip where it stays straight all the way down and then take the longer loop, which (the track has) listed as 7a, and then head back to the Esses.

"Hopefully, getting feedback from our drivers, what I'd like to see is if by staying straight we create a harder braking area and thus a better passing zone going into Turn 7."