Signal box, Victoria Terminus, Bombay, India, c 1930.
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Interior of a signal box at Victoria Terminus, Bombay, (now Mumbai). The lever frame moved the points to set the route for trains, and at the same time operated signals to let the driver know whether he could proceed. The signalman's job carried a lot of responsibility because mistakes could be potentially fatal. Formal training was given with some signalmen attending 'Signalling school'.