(rail, UK) A small explosive charge (detonator) which can be placed on a railway line in fog, to be detonated by a train passing over it as a warning signal to the driver.
(rail, UK) A small explosive charge (detonator) which can be placed on a railway line in fog, to be detonated by a train passing over it as a warning signal to the driver.
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(rail transport, UK) A small explosive device attached to the railhead to provide an audible warning when a train passes over it.
(rail, UK) A signal given to a train driver by the guard of the train, or a member of station staff, that the train is ready to depart.
A warning of an imminent explosion in a confined space, especially a grenade or blasting charge.
(rail, UK) A type of railway signal which shows the aspect of a signal ahead of it, normally used in a situation where the main signal is hidden from view, for instance where there is a curve in the track.
(UK, railways) A buzzer in a signal box that sounds when a train activates a treadle positioned on the track, and thus provides a warning or announcement of a nearby train.