▁were ▁part ▁of ▁a ▁particularly ▁dead ly ▁year ▁for ▁mot ors ports , ▁which ▁also ▁included ▁four ▁other ▁Ind y ▁drivers ▁dying ▁in ▁other ▁races , ▁Alberto ▁As c ari ▁being ▁killed ▁while ▁testing ▁a ▁sports ▁car , ▁and ▁a ▁hor r ific ▁accident ▁at ▁the ▁ 2 4 ▁H ours ▁of ▁Le ▁Mans ▁which ▁saw ▁nearly ▁ 1 0 0 ▁spect ators ▁killed . ▁Following ▁the ▁year ▁the ▁American ▁Autom obile ▁Association ▁ceased ▁san ction ing ▁auto ▁races ▁( including ▁the ▁Ind y ▁ 5 0 0 ) ▁and ▁the ▁United ▁States ▁Auto ▁Club ▁( US AC ) ▁was ▁formed ▁to ▁handle ▁san ction ing ▁duties . ▁It ▁would ▁take ▁until ▁ 1 9 5 9 ▁for ▁fire ▁su its ▁to ▁be ▁made ▁mand atory ▁for ▁all ▁drivers ▁and ▁roll ▁bars ▁for ▁all ▁cars . ▁ ▁Classification ▁▁ ▁Notes ▁ ▁– ▁Point s ▁towards ▁the ▁ 1 9 5 5 ▁World ▁D ri vers ' ▁Championship ▁ ▁– ▁ 1 ▁point ▁for ▁fast est ▁lead ▁lap ▁ ▁Add itional ▁stats ▁▁ ▁P ole ▁position : ▁Jerry ▁Ho yt ▁– ▁ 1 : 0 4 . 2 7 ▁( while ▁Ho yt ▁started ▁on ▁the ▁pole , ▁Jack ▁Mc Gr ath ▁set ▁the ▁fast est ▁time ▁but ▁started ▁on ▁the ▁outside ▁of ▁the ▁first ▁row ) ▁ ▁Fast est ▁Le ad ▁Lap : ▁Bill ▁V uk ov ich ▁– ▁ 1 : 0 3 . 6 7 ▁ ▁Shared ▁D riv es : ▁ ▁Car ▁# 1 0 : ▁Tony ▁Bet ten hausen