Approach aspect Approach-Medium automatic block automatic signal automatic train control automatic train stop back contact band on lever block in advance block signals block system braking distance cab signals centralized traffic control circuit controller Clear aspect conﬂicting crossing crossover cuit de-energized deﬁned deﬁnite designed direction distant signal electric energized ﬁrst ﬁxed front contact home signal illustrated in Fig interlocking plants L bands layout lever 15 line relay manual block maximum mechanical locking medium speed move operation opposing trains particular proach Proceed protection rail railroad railway signaling restrictive aspects route locking section of track shunt signal aspect signal control circuits signal displaying signal lever signal system single-track stick relay Stop aspect Stop-and-Proceed aspect switch lever three-block tion track cir track circuit track indicating relay track occupancy track relay track section track transformer trafﬁc train orders train passes trol two-block usually utilized wires
Page 41 - When a train is moving under circumstances in which it may be overtaken by another train, the flagman must take such action as may be necessary to insure full protection. By night, or by day when the view is obscured, lighted fusees must be thrown off at proper intervals.
Page 41 - When a train stops under circumstances in which it may be overtaken by another train, the flagman must go back immediately with flagman's signals a sufficient distance to insure full protection, placing two torpedoes, and when necessary, in addition, displaying lighted fusees.
Page 7 - YARD. — A system of tracks within defined limits provided for the making up of trains, storing of cars and other purposes, over which movements not authorized by time-table, or by train order, may be made, subject to prescribed signals and regulations.
Page 193 - A term applied to a system of railroad operation by means of which the movement of trains over routes and through blocks on a designated section of track or tracks is directed by signals controlled from a designated point without requiring the use of train orders and without the superiority of trains.
Page 1 - EXTRA TRAIN — A train not authorized by a time-table schedule. It may be designated as : Extra — For any extra train, except work extra; Work Extra— For work train extra.
Page 41 - ... 88. At meeting points between trains of the same class, the inferior train must clear the main track before the leaving time of the superior train.
Page 1 - TIME-TABLE. — The authority for the movement of regular trains subject to the rules. It contains the classified schedules of trains with special instructions relating thereto.
Page 46 - To admit a train to a block, the signalman must examine the block record, and, if the block is not occupied by a passenger train, give "3 for ," or "36 for ," to the next block station in advance.
Page 194 - On portions of the railroad, and on designated tracks so specified on the time-table, trains will run with reference to other trains in the same direction by block signals whose indications will supersede the superiority of trains.