"1" . _:vb8147801 "1961 June, J. Geoffrey Todd, \u201CImpressions of railroading in the United States\u201D, in Trains Illustrated, page 357:"@en . _:vb8147801 "As we sped effortlessly along at a steady 75-80 m.p.h., with the three vertical lights of a clear aspect shining unwinkingly on the ground glass of the cab signal, our engineer lolled back in his chair and leisurely lit a huge cigar; [...]."@en . . _:vb8147800 . _:vb8147801 . _:vb8147800 "(rail) A device in the cab of a locomotive or train which displays the status of signals along the track."@en .