Nevada Highway Patrol troopers investigate at the scene of a rollover accident in the southbound lanes of I-15 near Lamb Blvd. Wednesday, Oct. 23, 2013. The vehicle was northbound but, possibly due to tire failure, the vehicle crossed the median and rolled. The driver was ejected and is reported in critical condition. A child in a car seat suffered non-life-threatening injuries, said NHP Trooper Jeremie Elliott.