. Railway age . They are so arranged as to make it impossible to admit trains fromopposite directions at the same time. Assuming that the south tubeis to be used alone, the operator at Borough Hall, having ;=uredhimself of a clear track, gives a signal to the operator at BowlingGreen and one train may be admitted to the south tube from theBrooklyn end—a reversal of the traffic; and after it is once admittedthe signals admitting to the tube are locked beyond control of theoperator at Bowling Green. In case of an accident to the trainfrom Borough Hall, and the fact is communicated to Bowli
. Railway age . They are so arranged as to make it impossible to admit trains fromopposite directions at the same time. Assuming that the south tubeis to be used alone, the operator at Borough Hall, having ;=uredhimself of a clear track, gives a signal to the operator at BowlingGreen and one train may be admitted to the south tube from theBrooklyn end—a reversal of the traffic; and after it is once admittedthe signals admitting to the tube are locked beyond control of theoperator at Bowling Green. In case of an accident to the trainfrom Borough Hall, and the fact is communicated to Bowling Green Fig. 4—Sketch of Illuminated Track Indicator. grade each side from the lowest jroint is l!.l per cent., the loiiglliof the incline on the Brooklyn side being nearly .JO per cent, greaterthan on the New York side. Full-block overlaps are provided givingtwo clear blocks in advance of each train, and they vary in lengthfrom 800 ft. to 2,400 ft., as shown upon the accompanying engrav-ings. Circuits are
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Keywords: ., bookcentury1800, bookdecade1870, bookidrailwayage44, bookyear1870
