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The Main Line also refers to the affluent Philadelphia suburbs along the line of the same name. Prior to the late 1980s, all commuter rail operations went from Suburban Station to Paoli, the westernmost census designated place along the Main Line. Because of this earlier operation, local residents called the R5 "the Paoli Local".
Automatic block signaling (ABS), spelled automatic block signalling or called track circuit block (TCB [1]) in the UK, is a railroad communications system that consists of a series of signals that divide a railway line into a series of sections, called blocks. The system controls the movement of trains between the blocks using automatic signals.
Examples of single line tokens: Tablet on left, key token on right. The operation of a bidirectional single track line has the hazard of two trains colliding. The simplest way to prevent such collisions is to have only one train in the section at any given time. Such a system is known as "one-engine-in-steam” (OES) or “one-train working ...
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A push pole A pole about 12 feet (366 cm) long and having a diameter of 5 inches (127 mm) and used in the United States between 1870 and the mid-1960s to push a freight car onto or off a siding or onto another track by being placed between a locomotive (on an adjacent track) and the freight car.
The Belmont Plane ran from the Schuylkill River for 2,805 feet (855 m), rising 1 foot (0.3 m) per 15 feet (4.6 m) for a total rise of 187 feet (57 m). Steam-driven cables dragged the railway cars to the top of Belmont Hill.
Neonatal bowel obstruction (NBO) or neonatal intestinal obstruction is the most common surgical emergency in the neonatal period. [1] It may occur due to a variety of conditions and has an excellent outcome based on timely diagnosis and appropriate intervention .
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