Trains waiting for clearance, but track is clear

Vladki · December 04, 2020, 10:27:56 PM

In this save, watch two trains - Javelin (red player), reversing on the south platform at Brambleton, and Eurostar (green player), arriving from west to the northern platform. Javelin reverses and departs, just shortly before Eurostar. Thus Eurostar is blocked for a while, but stays so even after the block ahead is cleared. It stays there until the Javelin departs from the next stop, which happens to be 64 km away. Thus creating quite bad traffic jam...

http://list.extended.simutrans.org/~simutrans/debug-saves/blocking.sve

The signal at the end of platform (under the bridge) is TVM section board (cab signal). I tried to remove it and build again - still the same. I was able to recreate the jam with track-circuit signal. Interestingly enough, trains from red player, are unstuck much earlier, just after few blocks, probably where their paths diverted. But the green train is stuck until the previous train departs from the next stop.

freddyhayward · December 04, 2020, 10:59:41 PM

Refreshing schedule makes it go... I will look into this further.

jamespetts · December 12, 2020, 05:03:02 PM

Thank you for your report. I am afraid that I cannot reproduce this with the latest on the master branch - can I check whether anyone else can still reproduce this? This might have been resolved with the reversion of the patch relating to reverse direction signals.

Vladki · December 12, 2020, 06:13:24 PM

I have combiled fresh master, loaded the reported save and it behaves the same

jamespetts · December 12, 2020, 07:18:16 PM

Quote from: Vladki on December 12, 2020, 06:13:24 PM
I have combiled fresh master, loaded the reported save and it behaves the same

It is odd that I cannot reproduce it can you confirm the convoy number of the train and the in-game time of the issue so that I can be sure that I am looking in the correct place?

Vladki · December 12, 2020, 08:53:32 PM

Look for brambleton railway station, train 2721 Javelin, Elemental Transport and 2388 Eurostar e320, Freahxbus; time May 2049 2:09-2:11

jamespetts · December 20, 2020, 01:05:59 PM

Thank you: I believe that I have now fixed this. I should be grateful if you could re-test with to-morrow's nightly build.

Vladki · December 28, 2020, 08:31:33 PM

I confirm: this is fixed. Thank you

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Trains waiting for clearance, but track is clear