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Single line working using tokens

242 bytes added, 18:17, 25 January 2015
Added description of token carriers
Each instrument is numbered, and each token, like a key, only fits into the correct instrument. The tokens are also stamped with the names of the signalboxes at either end of the section they apply to, and are colour-coded, with all the tokens in a set having their handles painted a distinctive colour.
When a token has been removed from an instrument, it is usually placed in a 'token carrier', a metal holder which is about the same size and shape as an unstrung tennis racket. This enables the tokens to be passed to and from moving trains.
== See Also ==
[[Acceptance Lever]]
[[ETT]]
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