[Don]

Cup series caution Laps, 2009 not available, with 10,707 laps run for all the Cup races:

2008: 1445/13.7%
2007: 1615/15.0%
2006: 1578/14.7%
2005: 1786/16.6 %

Includes all types of cautions: debris, accidents, competition. In the 2009 Daytona 500 , 35 caution laps of which 4 were for debris only. But the race was shortened due to rain.

The 2010 Daytona had 21 lead changes, a new record for the race and track.

Whether the caution laps are legitimate ( debris ? ) or too many/long, possibility of additional 13 to 16 % + or - laps, extending the race. Then there is the situation of clearing the accidents with wreckers and medical personnel on the track with the pace car at full speed.

Wayne, Firstly, go back to green the second that the piece of debris has been picked up even if 30 or 40 cars are in the pits. Sure would add more race strategy for running on the old tires and the decision of filling a tank when only needing a few or less gallons. Believe it was Johnson that either did not pit for tires or took only 2 to get track position in his 125 win, but that's probably why the #48 has been successful.

rustyBob........good point.