Author Topic: token block signals  (Read 387 times)

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Offline Vladki

token block signals
« on: February 05, 2017, 07:57:29 PM »
Hi, I have noticed a weird blockage in the bridgewater brunel game at (1208,2302) - a tioken block signal that does not allow a train to enter a free block

Offline jamespetts

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Re: token block signals
« Reply #1 on: February 18, 2017, 01:19:28 AM »
I am currently reviewing old bug reports and I notice that this one appears to have no reported resolution. May I ask whether this can still be reproduced?
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Offline Ves

Re: token block signals
« Reply #2 on: February 18, 2017, 12:53:42 PM »
I have seen this still recently. An example can be found in the save game I sent you about the absolute block video, where a train is waiting in eternity at a token block signal. I am not home until tomorrow and I don't remember the name of the station, but I wrote in the text a small note about the bug.

Offline jamespetts

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Re: token block signals
« Reply #3 on: February 18, 2017, 04:59:48 PM »
I cannot find the note: are you referring to this text?
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Offline Vladki

Re: token block signals
« Reply #4 on: February 18, 2017, 07:36:13 PM »
Well, it does behave a little bit different than before:

The train passes the token block semaphore, but after stopping at Merton Wintergardens (no signals) it reverts to drive by sight, and leaves a few tiles of reservation behind.  This forgotten reservation is blocking the train in opposite direction, until the first train departs from Mitcham Junction, when it somehow clears the forgotten reservation.

Similar situation can be seen in http://server.exp.simutrans.com/debug-saves/t-signal-deadlock.sve
at olofstrom external station - the train turns to drive by sight upon reversal.
« Last Edit: February 19, 2017, 09:47:16 PM by Vladki »

Offline jamespetts

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Re: token block signals
« Reply #5 on: March 08, 2017, 11:06:55 PM »
Can I check whether this can still be reproduced after the most recent signalling fixes? I did fix an issue relating to token block signalling. Please note that token block signalling does not work in the same way as one train staff signalling (as it appears as though it was intended to work in the Swedish saved game that I used to fix the other signalling problems), and cannot be used on an unsignalled dead-end (but there is no reason to use it thus: just use the one train staff cabinets instead). For terminating sections in token block, you will need to signal entry to the platforms using absolute block signals, and exit from the platforms using token block signals.
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Offline Ves

Re: token block signals
« Reply #6 on: March 08, 2017, 11:36:00 PM »
Aha, I did not know that token block could not be used when reserving and that was exactly the way they where used! Is it intentional?

Offline jamespetts

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Re: token block signals
« Reply #7 on: March 08, 2017, 11:46:12 PM »
Yes - you still need starter signals with the token block system. The token block system is in essence the absolute block system with an additional mechanism overlaid to prevent clashes on single track lines.
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Offline Vladki

Re: token block signals
« Reply #8 on: March 12, 2017, 10:34:51 PM »
Tested on an older copy of bridgewater brunel game and the issue is still present. It turns to drive by sight when departing from unsignalled stop, when it should stay in token block mode. Partial improvement is that reservations are cleared correctly.

Offline jamespetts

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Re: token block signals
« Reply #9 on: March 13, 2017, 12:27:16 AM »
Tested on an older copy of bridgewater brunel game and the issue is still present. It turns to drive by sight when departing from unsignalled stop, when it should stay in token block mode. Partial improvement is that reservations are cleared correctly.

Do you mean a reversing or a non-reversing unsignalled stop?
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Offline Vladki

Re: token block signals
« Reply #10 on: March 13, 2017, 12:46:53 AM »
Non reversing