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… starting point. When a movement is equipped with a single radio, it must be voice tested as soon as practicable after … the crew commences duty. 118. Devices Used in Lieu of Radio When a communication device is used in lieu of a radio, all radio rules are applicable. 119. Continuous …
54.43
… Application and Supervision (a) On subdivisions, portions of subdivisions or other tracks specified in special … Required (a) Except within cautionary limits, a train or transfer must be authorized by a clearance to foul or enter a … clearance will be sent direct to the crew of the train or transfer addressed. Before the clearance is acted upon the …
56.905