<P> The code in USAC, NASCAR, and IndyCar states if fewer than half the laps are completed or if the race is unable to start, the event is resumed on a later date, usually the next day . With the introduction of lights at numerous oval tracks, the time frame for resuming a rain delayed race on the same day has been largely expanded . Some races stopped during the day for rain have seen the track dried, and the race completed later in the evening on the same day . Since the 2017 season, all NASCAR national series utilize a format in which races are divided into three or four stages, with a competition caution after each; a race is considered official following the conclusion of the second stage, which is typically positioned around two quarters of the scheduled distance . </P> <P> Most road racing (except in the United States) does not use the 50 percent rule . In the FIA Code, if severe rain forces the race to be interrupted, the regulations state if less than three laps were completed, the race is canceled and will not be made up . Once a race is on its fourth green flag lap, the race is official, and only half points will be awarded until 75% of the race has been completed . </P> <P> The 1976 Indianapolis 500 was the shortest Indianapolis 500 in history, one lap past official status, with 102 laps completed . </P> <P> The 1976 Japanese Grand Prix was delayed because of rain . When the race eventually started, championship leader Niki Lauda pulled out because of the dangerous circuit allowing James Hunt to score enough points to win the F1 Drivers championship . </P>

When do they call off a baseball game