▁is ▁said ▁to ▁be ▁" under ▁green - flag ▁conditions ", ▁although ▁the ▁green ▁flag ▁does ▁not ▁remain ▁flying ▁continu ously . ▁ ▁white ▁flag : ▁shown ▁at ▁the ▁start ▁of ▁the ▁last ▁lap ▁ ▁check ered ▁flag : ▁shown ▁at ▁the ▁finish ▁line ▁The ▁pres cribed ▁number ▁of ▁final ▁la ps ▁is ▁usually ▁two , ▁but ▁may ▁be ▁as ▁many ▁as ▁ten . ▁If ▁a ▁ca ution ▁flag ▁is ▁shown ▁within ▁the ▁specified ▁number ▁of ▁la ps ▁of ▁the ▁scheduled ▁finish , ▁then ▁the ▁number ▁of ▁remaining ▁la ps ▁will ▁not ▁be ▁decre ment ed ▁until ▁the ▁green ▁flag ▁is ▁shown ▁again . ▁The ▁exact ▁prov isions ▁vary ▁between ▁organis ations . ▁For ▁some ▁years ▁after ▁ 2 0 0 7 , ▁NAS C AR ▁on ▁Fox ▁referred ▁to ▁the ▁extra ▁la ps ▁after ▁the ▁scheduled ▁number ▁as ▁Over drive , ▁an ▁all usion ▁to ▁the ▁term ▁over time ▁used ▁in ▁many ▁other ▁sports . ▁ ▁AR CA ▁( 2 0 0 3 - present ) ▁ ▁In ▁the ▁AR CA ▁Racing ▁Series , ▁there ▁is ▁a ▁two - stage ▁version ▁of ▁the ▁rule . ▁The ▁rules ▁are ▁arranged ▁such ▁that ▁the ▁check ered ▁flag ▁must ▁wave ▁under ▁green ▁flag ▁conditions . ▁ ▁If ▁the ▁final ▁scheduled ▁lap ▁of ▁the ▁race ▁is ▁under ▁ca ution ▁when ▁the ▁green ▁flag ▁is ▁w aved ▁for ▁the ▁restart ▁attempt , ▁there ▁are ▁two ▁la ps ▁remaining ▁in ▁the ▁race . ▁If ▁a ▁ca ution ▁comes ▁out ▁at ▁any ▁time ▁during ▁the ▁first ▁of ▁the ▁two