 When the yellow flag is displayed and the yellow caution lights around the track come on, the field is frozen immediately at the moment of caution.All scoring ends immediately and cars are to slow to pace vehicle speed.Cars will line up behind the pace vehicle in the order in which they passed the last scoring loop on track (there are as many as 18 loops around the track, although the one at the start/finish line is the only one that counts for official race statistics).