ports " ▁is ▁still ▁sometimes ▁used . ▁Since ▁ 2 0 1 4 , ▁a ▁special ▁two - day ▁format ▁has ▁been ▁util ized ▁for ▁time ▁tri als , ▁and ▁the ▁pole ▁position ▁is ▁actually ▁not ▁determined ▁until ▁the ▁conclusion ▁of ▁the ▁second ▁day . ▁The ▁term ▁" pole ▁day " ▁is ▁still ▁widely ▁used , ▁however , ▁to ▁reference ▁the ▁second ▁day ▁in ▁particular . ▁ ▁B ump ▁Day : ▁The ▁final ▁day ▁of ▁qual ifying , ▁when ▁the ▁final ▁starting ▁field ▁is ▁set , ▁is ▁tradition ally ▁known ▁as ▁" B ump ▁Day " ▁( or ▁" B ubble ▁Day "). ▁D ri vers ▁who ▁are ▁removed ▁from ▁the ▁starting ▁grid ▁of ▁ 3 3 ▁by ▁being ▁out - qual ified ▁by ▁faster ▁cars ▁are ▁said ▁to ▁have ▁been ▁" bum ped ." ▁The ▁driver ▁with ▁the ▁slow est ▁speed ▁in ▁the ▁field ▁of ▁ 3 3 , ▁the ▁first ▁in ▁line ▁to ▁be ▁b ump ed , ▁is ▁said ▁to ▁be ▁" on ▁the ▁b ubble ." ▁Un qual ified ▁drivers ▁attempt ▁to ▁b ump ▁their ▁way ▁into ▁the ▁field ▁and ▁" bur st ▁the ▁slower ▁driver ' s ▁b ubble ." ▁Prior ▁to ▁World ▁War ▁II , ▁the ▁term ▁typically ▁used ▁for ▁drivers ▁being ▁knock ed ▁out ▁of ▁the ▁field ▁was ▁" c row ded ▁out ." ▁Since ▁the ▁early ▁ 2 0 0 0 s , ▁smaller ▁entry ▁lists ▁have ▁led ▁to ▁fewer ▁cars , ▁or ▁even ▁zero ▁cars , ▁being ▁b ump ed ▁from ▁the ▁starting ▁grid