. Operation of trains and station work and telegraphy . e track it is converted into a four-track road. Nearly all, if not all, roads having a double track havesome form of block signaling in operation. More ex-pensive and efficient system than the telegraph blocksignal system have been widely introduced of late years,although the telegraph system is still in use to some ex-tent. It embodies the use of station train order signals,the telegraph operators, of course, communicating bymeans of the telegraph with each other. What is knownas the Right-Angle Semaphore (already referred to asbeing in


. Operation of trains and station work and telegraphy . e track it is converted into a four-track road. Nearly all, if not all, roads having a double track havesome form of block signaling in operation. More ex-pensive and efficient system than the telegraph blocksignal system have been widely introduced of late years,although the telegraph system is still in use to some ex-tent. It embodies the use of station train order signals,the telegraph operators, of course, communicating bymeans of the telegraph with each other. What is knownas the Right-Angle Semaphore (already referred to asbeing in use on one great railway system) is used in con-nection with the Telegraph Block System. This particu-lar form of semaphore is illustrated and its different in-dications shown in Figs. 106 to 109 inclusive. The Manual Controlled System.—These are sig-nals that are so interlocked that a signal cannot indicateclear if there is a train in the block. They are usuallyof the semaphore form, and are operated by a signalman. 392 RULES FOR MOVEMENT OF TRAINS. w** PIG. 117A.


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadtrains, booky