 The new policy was in reaction to the May 2018 Supreme Court of the United States ruling that struck down the Professional and Amateur Sports Protection Act of 1992, which allowed US states to authorize legal wagering.During a race, teams must pit several times for refueling and new tires.Teams are permitted five crew members over the wall at the start of the race; that consists of two tire changers, one tire carrier, a jackman, and a gas man.