▁particular ▁modifications ▁to ▁the ▁rail road ▁but ▁it ▁is ▁expensive ▁in ▁terms ▁of ▁maintenance ▁of ▁the ▁rolling ▁stock ▁due ▁to ▁the ▁complexity ▁of ▁the ▁til ting ▁system . ▁ ▁The ▁hyd ra ul ic ▁til ting ▁system ▁it ▁is ▁govern ed ▁by ▁two ▁gy ro scop es ▁located ▁in ▁the ▁lead ▁cars . ▁The ▁curve ▁is ▁found ▁on ▁the ▁base ▁of ▁the ▁elev ation ▁of ▁the ▁external ▁track . ▁ ▁E TR ▁ 4 6 0 s ▁are ▁provided ▁with ▁ 1 2 ▁three - phase ▁asynchronous ▁mot ors ▁( comp ared ▁to ▁the ▁ 1 6 ▁in ▁the ▁E TR ▁ 4 5 0 ) ▁located ▁in ▁all ▁cars , ▁in ▁order ▁to ▁improve ▁corner ing ▁cap ability . ▁The ▁mot ors ▁are ▁controlled ▁by ▁in ver ters ▁and ▁G TO s , ▁with ▁a ▁total ▁power ▁of ▁some ▁ 6 ▁M W . ▁Electric ▁bra king ▁is ▁of ▁r he ost atic ▁type , ▁with ▁the ▁possibility ▁of ▁energy ▁recovery ▁at ▁some ▁spe eds ▁while ▁the ▁mechanical ▁bra king ▁system ▁uses ▁disc ▁bra kes , ▁commanded ▁by ▁an ▁electro - p neum atic ▁system ▁called ▁W ab control . ▁ ▁E TR ▁ 4 6 0 s ▁can ▁carry ▁up ▁to ▁ 4 8 0 ▁passengers . ▁Configuration ▁includes ▁two ▁head ▁coach es , ▁ 6 ▁intermediate ▁passenger ▁coach es ▁and ▁a ▁bar ▁- ▁restaurant ▁coach . ▁ ▁See ▁also ▁Ele tt ro T reno ▁Euro star ▁Italia ▁New ▁P end ol ino ▁R ete ▁Fer ro vi aria ▁Italiana ▁T