▁the ▁leader ▁has ▁taken ▁the ▁white ▁flag . ▁In ▁the ▁event ▁of ▁a ▁race ▁ending ▁due ▁to ▁ca ution , ▁video ▁evidence ▁is ▁used ▁in ▁addition ▁to ▁scoring ▁loops ▁to ▁determine ▁the ▁official ▁order ▁of ▁finish . ▁ ▁A ▁green - white - check ered ▁finish ▁will ▁extend ▁the ▁race ▁beyond ▁its ▁advert ised ▁distance , ▁and ▁compet itors ▁are ▁not ▁allowed ▁to ▁pit ▁for ▁fuel ▁without ▁giving ▁up ▁track ▁position . ▁Teams ▁are ▁responsible ▁for ▁considering ▁the ▁extended ▁distance ▁in ▁their ▁fuel ▁strateg ies . ▁However , ▁if ▁the ▁clean up ▁is ▁expected ▁to ▁take ▁considerable ▁time , ▁NAS C AR ▁may ▁red ▁flag ▁the ▁race ▁with ▁the ▁cars ▁on ▁the ▁track , ▁so ▁that ▁cars ▁do ▁not ▁consume ▁all ▁their ▁fuel ▁while ▁under ▁ca ution . ▁ ▁Other ▁uses ▁O ften ▁short ▁track ▁races ▁that ▁run ▁less ▁than ▁ 5 5   km ▁( 3 5 ▁miles ) ▁will ▁use ▁a ▁rule ▁that ▁states ▁no ▁ca ution ▁la ps ▁count . ▁ ▁This ▁is ▁common place ▁for ▁typical ▁week ly ▁feature ▁races ▁that ▁are ▁under ▁ 1 0 0 ▁la ps . ▁ ▁Typ ical ▁m idget ▁and ▁s print ▁car ▁races ▁will ▁not ▁count ▁ca ution ▁la ps . ▁ ▁Other ▁short ▁track ▁races ▁( es pecially ▁those ▁of ▁ 1 0 0 ▁la ps ▁or ▁more ) ▁will ▁use ▁a ▁rule ▁stating ▁the ▁last ▁five ▁la ps ▁must ▁be ▁run ▁under ▁green ▁flag ▁conditions , ▁often ▁with ▁a ▁rule ▁stating ▁five ▁consecutive ▁la ps ▁must ▁be ▁run ▁under ▁green