INDYCAR has made the following updates to the 2013 rulebook, effective immediately.
On restarts within 15 laps of the finish of a race, all lapped cars will be moved to the back of the field.
9.2.2–Race Procedure Penalties
If circumstances do not permit a penalty to be served during a race, the Race Director shall declare the results provisional and officials shall review the penalty. The review is independent of technical inspection. (Basically, time penalties can be issued.)
If a car receives tire damage during a race, the two lap tire requirement shall be considered fulfilled.