IndyCar has clarified and streamlined its rulebook to help competitors better understand what is expected in races, according to published reports.

The release of the infraction/punishment structure is new for the series. Last year, a binder spelled out infractions and the penalties that could be considered, but that was not disclosed to the drivers.

IndyCar revised its officiating team during the offseason, naming three new stewards: former Ford Racing executive Dan Davis is the chief steward, with former drivers Arie Luyendyk and Max Papis assisting. Each has an equal vote in reviewing incidents and voting on the punishment.

IndyCar CEO Mark Miles said most of the warnings have been eliminated at the request of the drivers. Miles also said decisions will be made quicker than in the past.

The rules will be in place for this weekend's race at Phoenix International Raceway.