_:vb7175721 . "1" . . . _:vb7175720 . . . _:vb7175721 "2020 December 16, \u201CNorthern rail leaders discuss phase-out of diesel\u201D, in Rail, page 12:"@en . _:vb7175721 "The high capital costs of electrification are cited, with a suggestion that in challenging locations discontinuous electrification could be considered."@en . _:vb7175720 "having breaks or interruptions; intermittent"@en .