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… track. 401.1 Signal Displayed The indications displayed on block and interlocking signals govern operation to the … approach the governing signal preparing to stop until it can be observed as displaying a more favourable indication … of any such signal may be qualified or modified by an attached arrow and/or plate(s). (c) Lights may be attached …
33.174
… a valid certificate of rules; and (b) when conditions permit, require those to whom the TOP is read aloud, to read …
54.29
… Instructions may be issued by a signalman when necessary. 602. Proper Signal Indications Required (a) Except in case of …
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