. Operation of trains and station work and telegraphy . PIG. 102. A TWO-POSITION TRAIN-ORDER SIGNAL. Only two indications are necessary for train ordersignals. But if the block system is in operation it isadvisable to have a third for indicating caution whenit is used for blocking. This signal may be and in someinstances is used for train orders and block work also, STATION AND TRAIN WORK 379 yet the only positions which come under the rules gov-erning the train order signal are those already men-tioned, stop and A FIG. 103. A TRAIN-ORDER SIGNAL. Two forms of signals are shown in Fig
. Operation of trains and station work and telegraphy . PIG. 102. A TWO-POSITION TRAIN-ORDER SIGNAL. Only two indications are necessary for train ordersignals. But if the block system is in operation it isadvisable to have a third for indicating caution whenit is used for blocking. This signal may be and in someinstances is used for train orders and block work also, STATION AND TRAIN WORK 379 yet the only positions which come under the rules gov-erning the train order signal are those already men-tioned, stop and A FIG. 103. A TRAIN-ORDER SIGNAL. Two forms of signals are shown in Figures 104 and105 which are capable of three positions. The upwardinclination of the arm which is shown in Figure 104indicates caution, whereas the downward inclinationshown in Figure 105 indicates the same signal, but it 380 RULES FOR MOVEMENT OF TRAINS cannot be confused with clear because that signal isindicated by the vertical position. <:i::
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1919
