▁referred ▁to ▁as ▁a ▁city ▁code ). ▁These ▁codes ▁do ▁not ▁necessarily ▁correspond ▁with ▁the ▁list ▁of ▁I ATA - index ed ▁train ▁stations ▁or ▁the ▁three - character ▁I ATA ▁air port ▁codes , ▁although ▁many ▁are ▁the ▁same . ▁Am tra k ▁began ▁using ▁station ▁codes ▁in ▁ 1 9 9 2 , ▁so ▁stations ▁closed ▁or ▁removed ▁from ▁all ▁Am tra k ▁service ▁prior ▁to ▁ 1 9 9 2 ▁will ▁not ▁have ▁had ▁a ▁station ▁code ▁assigned . ▁The ▁station ▁code ▁" EN P " ▁is ▁used ▁for ▁" any ▁stop ▁en ▁route , ▁not ▁otherwise ▁specified ". ▁If ▁a ▁station ▁code ▁was ▁used ▁by ▁more ▁than ▁one ▁train ▁station , ▁each ▁station ▁is ▁listed . ▁However , ▁if ▁a ▁station ▁code ▁was ▁used ▁for ▁a ▁Th ru way ▁Motor co ach ▁stop ▁that ▁has ▁changed ▁locations , ▁only ▁information ▁for ▁the ▁current ▁location ▁( or ▁most ▁recent ▁location , ▁if ▁the ▁stop ▁is ▁no ▁longer ▁in ▁service ) ▁is ▁included ▁in ▁the ▁notes , ▁unless ▁one ▁of ▁the ▁locations ▁was ▁an ▁actual ▁train ▁station . ▁ ▁R id ership ▁data ▁and ▁station ▁ownership ▁is ▁from ▁Am tra k ' s ▁Great ▁American ▁St ations ▁website . ▁The ▁ownership ▁of ▁many ▁stations ▁is ▁shared , ▁with ▁one ▁entity ▁ow ning ▁one ▁or ▁more ▁of ▁the ▁following : ▁the ▁facility ▁itself , ▁the ▁par king ▁lot , ▁the ▁passenger ▁platform , ▁and ▁the ▁train ▁tracks . ▁In ▁some ▁instances , ▁the ▁owner ▁of ▁the ▁bus ▁station ▁used ▁for ▁a ▁Th