A special form of Tokenless Block working is utilised between Tisbury-Gillingham-Templecombe-Yeovil Jn-Chard Jn-Honiton-Exmouth Jn, a detailed explanation of which can be found here
Either signaller has to offer a train due to travel over the single line, with the other end having to accept before any route can be set over the section (akin to slots). Once the train enters the section, the block indicators will move to Train in Section (TIS). When the train exits the section and the signaller is satisfied it has arrived complete, (s)he presses the 'Train Arr' button to restore the block instrument to 'Normal'.
To set a route (LC=Left click, RC=Right click):-
| Event | Action | Requires | Display | Notes |
|---|---|---|---|---|
| Offer | LC on Offer | Block N Acct Normal |
Button shows grey | |
| Accept | LC on Norm/Acct | Block N Offer clear |
Points to Acct | Can be done in advance of Offer |
| Accepted | Block shows green A | |||
| Set Route | LC on entry & exit sigs | Block showing A | Route lit white | |
| Train enters section | Block shows red TiS | (TiS=Train in Section) | ||
| Train exits section | Train passed signal | |||
| Train Arrived Complete | Train clear of section | Train Arr button grey | ||
| Restore Block | LC on Train Arr | Acct switch Norm | Block shows white Norm |
Notes
- Knob can be set to Accept with Train in Section in anticipation of Offer from far end once train is clear;
- Offer can be withdrawn by turning to Accept and back to Normal;
- Acceptance can be withdrawn prior to train entering Section by turning knob from Accept back to Normal, this will replace the Section Signal to Danger so only do so with care.
Last edited by KymriskaDraken on 10/04/2019 at 22:43