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  2. Blue light station - Wikipedia

    en.wikipedia.org/wiki/Blue_Light_Station

    A Blue Light Station is a combined emergency telephone and emergency power-off switch in rapid transit stations and other points along electrified railways. They are common in the United States and Canada. [citation needed] The location of such a device is usually indicated by a blue light.

  3. Railroad switch - Wikipedia

    en.wikipedia.org/wiki/Railroad_switch

    A right-hand railroad switch with point indicator pointing to right Animated diagram of a right-hand railroad switch. Rail track A divides into two: track B (the straight track) and track C (the diverging track); note that the green line represents direction of travel only, the black lines represent fixed portions of track, and the red lines depict the moving components.

  4. East Side Access - Wikipedia

    en.wikipedia.org/wiki/East_Side_Access

    A tunnel cavern deep under Park Avenue, to the north of the new LIRR station, which now houses a switch. Work on the Manhattan side included building a new 8-track train station with storage tracks extending to 38th Street. [45]: 1 (PDF p. 2) [28]: 3 North of the station, the tunnels would connect to the 63rd Street Tunnel's lower level.

  5. Galesburg Yard - Wikipedia

    en.wikipedia.org/wiki/Galesburg_Yard

    View towards the southwest of the tracks of the exit group, which enclose the directional harp (48 tracks) on the west side. In 1995, the BN merged with the Atchison, Topeka and Santa Fe Railway to form today's BNSF Railway (Burlington Northern Santa Fe), which expanded the Galesburg Yard several times due to its importance for the newly created network, while retaining the existing layout of ...

  6. Wye (rail) - Wikipedia

    en.wikipedia.org/wiki/Wye_(rail)

    A simple wye Countryside wye near Lüderitz, Namibia. In railroad structures and rail terminology, a wye (like the 'Y' glyph) or triangular junction (often shortened to just triangle) is a triangular joining arrangement of three rail lines with a railroad switch (set of points) at each corner connecting to the incoming lines.

  7. Timeline of the Washington Bridge closure: Here's how it all ...

    www.aol.com/timeline-washington-bridge-closure...

    Friday Dec. 15, Before dawn:An emergency bypass allows two lanes of westbound traffic to use two lanes of the eastbound span, easing some the worst congestion and spreading it out more evenly to ...

  8. Track circuit - Wikipedia

    en.wikipedia.org/wiki/Track_circuit

    A rail break between the insulated rail joint and the track circuit feed wiring would not be detected. Failure modes that result in an incorrect "track clear" signal (known usually in North America as a "false clear") may allow a train to enter an occupied block, creating the risk of a collision. Wheel scale and short trains may also be a problem.

  9. Signalling block system - Wikipedia

    en.wikipedia.org/wiki/Signalling_block_system

    Most rail routes have a sort of natural block layout inherent in the layout of the railway stations. This provides the ability to implement a set of blocks using manual signalling based at these locations. In this case, the station operator places a flag indicating a train has just left the station, and removes it only after a fixed time.