The collision involving NASCAR star Tony Stewart that killed a driver during a sprint car race in New York prompted a review of safety protocols by the IndyCar racing series. The guidelines instruct IndyCar drivers to stay in their vehicles after a track incident and follow safety guidelines until a safety team arrives, so long as there is no fire or other extenuating circumstance, an IndyCar spokesman said. NASCAR on Friday added a rule barring its drivers from approaching the track or moving cars after accidents, less than a week after the driver Kevin Ward Jr. was killed after getting hit by Stewart's car. ''IndyCar's safety guidelines and post-incident protocol are very reflective of what NASCAR put out today,'' IndyCar spokesman Mike Kitchel said Friday. More...