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  1. 6-Jun-2022, 05:23 #12
    Martin Aislabie
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    Re: Cars, Boats, Trains, Planes

    Click image for larger version.  Name: SNG at Highley.jpg  Views: 78  Size: 131.7 KB  ID: 227913

    A4 - Sir Nigel Gresley - approaching Highley Station doing a token swap.
    Spring 2022 Steam Gala, Severn Valley Railway - UK

    Tokens are the method used to ensure only one train at a time can enter a section of single track.
    The signal box operator (standing track side in the photo) must release a token to allow a train to enter a particular section of the track - and then no other tokens can be released for that section of the track until the previously released token has been clocked back in.

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    Martin
    Last edited by Martin Aislabie; 16-Jun-2022 at 05:32.
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