Just out of curiosity, I decided to do a similar analysis on the Nationwide Series caution record as I did on the Cup record. My intent was that if there was something specific to the Cup series – the new car, the Chase, etc.), it would show up because the Nationwide would follow a different trend. Not at all! Remember that I’m plotting number of cautions per 100 miles run.
No too surprisingly, the Nationwide Series has more cautions than the Cup Series; however, the cautions are decreasing much faster in the Nationwide Series than in the Cup Series.
Taking the linear trend to its logical extreme, we can expect the first caution-free season in 2018 for the Cup Series and 2030 for the Nationwide Series!