▁each ▁passenger ▁has ▁a ▁reserved ▁assigned ▁seat . ▁ ▁Each ▁compart ment ▁has ▁its ▁own ▁door ▁to ▁the ▁a is le ▁and ▁cur tain s ▁can ▁be ▁drawn ▁to ▁keep ▁the ▁compart ment ▁dark . ▁In ▁the ▁night - tra ins , ▁passengers ▁in ▁a ▁ 2 nd ▁class ▁compart ment ▁tend ▁to ▁draw ▁the ▁cur tain s , ▁switch ▁off ▁the ▁lights ▁and ▁close ▁the ▁sl iding ▁door , ▁hoping ▁that ▁no ▁passengers ▁will ▁enter ▁their ▁compart ment ▁so ▁the ▁existing ▁cabin ▁passengers ▁might ▁have ▁more ▁space . ▁In ▁ 1 st ▁class , ▁however , ▁each ▁seat ▁is ▁manually ▁assigned . ▁Thus , ▁the ▁system ▁is ▁not ▁used . ▁ ▁When ▁trains ▁are ▁not ▁busy , ▁c ouch es ▁are ▁usually ▁empty , ▁so ▁passengers ▁can ▁lie ▁down ▁at ▁times . ▁ ▁Besides ▁these ▁' normal ' ▁compart ments ▁( that ▁are ▁also ▁used ▁on ▁day - time ▁trains ▁and ▁special ▁night - tra ins ) ▁they ▁also ▁offer ▁sle eper - c ars ▁with ▁bed rooms / com part ments ▁or ▁c ouch ettes . ▁A ▁bed ▁or ▁c ouch ette ▁has ▁fixed ▁price , ▁regardless ▁of ▁the ▁trav elling ▁route ▁or ▁distance . ▁B eds ▁and ▁c ouch ettes ▁have ▁to ▁be ▁reserved ▁when ▁tick ets ▁are ▁brought . ▁ ▁Mar ra ke ch – T ang ier ▁section ▁On ▁each ▁day , ▁there ▁is ▁only ▁one ▁train ▁on ▁the ▁Mar ra ke ch - T ang ier ▁section ▁in ▁each ▁direction . ▁On ▁this ▁route ▁the ▁standard ▁