div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: System Map SECR 2017pdfbc electrified line single line double line triple line railway fly over sanctioned zonal railway headquarters divisional headquarters ibp on single line src=https:reader034fdocumentsnetreader034viewer20220420235e7ac739ed7f452b597f0874html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv