File:In the signal box. (15926238483).jpg

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Original file (2,400 × 1,807 pixels, file size: 3.08 MB, MIME type: image/jpeg)

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Description The first semaphore signals were controlled by levers situated at the signals. Some early signals protruded from the roof of the controlling signal box. Later, remote operation was effected by levers connected to the signal by single wires (UK), pairs of wires (Continental Europe), or pipes supported on rollers (US). The levers were grouped together in a building known as a "signal box" (UK & Australia) or "interlocking tower" (US). In the UK multiple signal wires were grouped together, and in station areas were commonly routed beneath platform faces just above rail level. The operation of a single signal wire would cause some of the adjacent wires to 'jangle', and this noise was one of the many characteristic sounds of railway travel until the gradual introduction of colour-light signals from the mid 20th century.
Date
Source In the signal box.
Author Bernard Spragg. NZ from Christchurch, New Zealand
Camera location44° 15′ 39.68″ S, 171° 07′ 50.97″ E Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

This image was originally posted to Flickr by Bernard Spragg at https://flickr.com/photos/88123769@N02/15926238483 (archive). It was reviewed on 22 January 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero.

22 January 2018

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Date/TimeThumbnailDimensionsUserComment
current23:10, 22 January 2018Thumbnail for version as of 23:10, 22 January 20182,400 × 1,807 (3.08 MB)Artix Kreiger 2 (talk | contribs)Transferred from Flickr via Flickr2Commons

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