, ▁and ▁some ▁ret ail ▁sh ops . ▁The ▁second ▁level ▁had ▁access ▁to ▁the ▁H & M ' s ▁five ▁train ▁tracks ▁with ▁elev ated ▁platforms , ▁while ▁the ▁third ▁and ▁lowest ▁level ▁was ▁for ▁b agg age ▁and ▁consisted ▁of ▁an ▁elect rical ▁subst ation . ▁The ▁conc ourse ▁was ▁carefully ▁planned ▁and ▁designed ▁with ▁a ▁system ▁of ▁ram ps ▁desc ending ▁from ▁street ▁level ▁to ▁the ▁me zz an ine , ▁to ▁allow ▁an ▁un pre ced ented ▁volume ▁of ▁ped est rian ▁traffic ▁to ▁flow ▁in ▁and ▁out ▁of ▁the ▁station ▁quickly ▁and ▁easily . ▁According ▁to ▁Sarah ▁Brad ford ▁Land au , ▁" At ▁full ▁capacity , ▁the ▁Hudson ▁Terminal ▁could ▁accommod ate ▁ 6 8 7 , 0 0 0 ▁people ▁per ▁day ; ▁in ▁comparison , ▁Pennsylvania ▁Station ▁( 1 9 0 2 – 1 9 1 0 ) ▁was ▁designed ▁with ▁a ▁capacity ▁of ▁ 5 0 0 , 0 0 0 ." ▁ ▁References ▁ ▁Further ▁reading ▁▁▁ ▁The ▁relations ▁of ▁rail ways ▁to ▁city ▁development : ▁papers ▁read ▁before ▁the ▁American ▁Institute ▁of ▁Arch itect s , ▁December ▁ 1 6 , ▁ 1 9 0 9 , ▁New ▁Will ard ▁Hotel , ▁Washington , ▁Part ▁ 3 , ▁page ▁ 4 2 . ▁ ▁Category : R ail way ▁stations ▁located ▁under ground ▁in ▁New ▁York ▁( state ) ▁Category : Transport ation ▁in ▁Hudson ▁County , ▁New ▁Jersey ▁Category : World ▁Trade ▁Center ▁Category : H ud son ▁River ▁Category :