. ▁The ▁shift ▁quadr ant ▁sequence ▁was ▁R - N - D - L , ▁which ▁differ ed ▁from ▁the ▁more ▁common ▁P - N - D - L - R ▁on ▁other ▁makes . ▁In ▁most ▁other ▁makes , ▁it ▁was ▁necessary ▁to ▁pass ▁through ▁all ▁forward ▁ranges ▁to ▁put ▁the ▁car ▁in ▁reverse , ▁and ▁then ▁back ▁through ▁some ▁of ▁those ▁ranges ▁to ▁drive ▁forward . ▁Ch rys ler ▁promoted ▁the ▁greater ▁safety ▁of ▁the ▁Power Fl ite ▁pattern ; ▁because ▁forward ▁and ▁reverse ▁settings ▁were ▁separated ▁by ▁neutral ▁and ▁it ▁was ▁necessary ▁to ▁move ▁the ▁lever ▁only ▁one ▁not ch ▁to ▁the ▁left ▁or ▁right ▁to ▁put ▁the ▁car ▁in ▁motion , ▁so ▁an ▁accident al ▁over shift ▁past ▁D ▁would ▁result ▁in ▁a ▁har ml ess ▁shift ▁to ▁low ▁g ear ▁rather ▁than ▁an ▁un int ended ▁eng agement ▁of ▁reverse . ▁Many ▁years ▁later , ▁when ▁the ▁U . S . ▁National ▁Highway ▁Tra ffic ▁Saf ety ▁Administration ▁began ▁reg ulating ▁vehicle ▁controls ▁and ▁displays , ▁the ▁Ch rys ler ▁pattern ▁( with ▁the ▁Park ▁setting ▁added , ▁becoming ▁P - R - N - D - L ), ▁became ▁mand atory ▁for ▁the ▁safety ▁reasons ▁originally ▁stated ▁by ▁Ch rys ler . ▁In ▁ 1 9 5 5 , ▁Ch rys ler ▁moved ▁the ▁shift ▁lever ▁to ▁the ▁dash board ▁in ▁a ▁vertical ▁slot ▁with ▁" R " ▁at ▁the ▁top ▁and ▁" L " ▁at ▁the ▁bottom . ▁In ▁ 1 9 5 6 , ▁Ch