FONTANA, Calif. -- Evaluation of veteran driver Justin Wilson, who was involved in an incident in Turn 2 of Lap 111 of the MAVTV 500 at Auto Club Speedway, at an area hospital revealed non-operable pelvic fractures and a small pulmonary contusion.

Wilson, 34, was kept overnight at Arrowhead Regional Medical Center for further observation, according to INDYCAR medical director Dr. Michael Olinger.

Wilson's No. 19 Dale Coyne Racing car exited Turn 2 and spun in the middle of the 2-mile oval. The car slid up the racetrack, and with its nose pointed toward the outside wall, was struck by the No. 55 Schmidt Peterson Motorsports car driven by Tristan Vautier on the front-right side. The Holmatro Safety Team was quickly on the scene to attend to both drivers.

Wilson was awake and alert and was transported by ground to the hospital.

"There was a cloud of smoke and I didn't see (Wilson)," said Vautier, who was checked at the infield care center and released.

Josef Newgarden, running closely behind the incident in the No. 67 Sarah Fisher Hartman Racing car, moved to the high side in an attempt to slide past Wilson's car but pinned the No. 4 National Guard Panther Racing car driven by Oriol Servia against the SAFER Barrier.

Both drivers also were checked at the infield care center and released.

James Jakes' No. 16 Acorn Stairlifts car for Rahal Letterman Lanigan Racing was struck by debris and slid into the SAFER Barrier. He also was checked at the infield care center and released.