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path signal not reserve free path #6305

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DorpsGek opened this issue May 24, 2015 · 3 comments
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path signal not reserve free path #6305

DorpsGek opened this issue May 24, 2015 · 3 comments
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flyspray This issue is imported from FlySpray (https://bugs.openttd.org/)

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@DorpsGek
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AAKLex opened the ticket and wrote:

path signal not reserve free path on train 2. If remove diagonal blok - path reserved.

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Reported version: 1.5.0
Operating system: All


This issue was imported from FlySpray: https://bugs.openttd.org/task/6305
@DorpsGek
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Alberth wrote:

Train 1 (rightmost) wants to move between rightmost depots, train 2 between middle depots.

Train 2 wants to share the rightmost track with train 1, as the one-way signal is better to cross than the two-way signal.
As a result, it waits until train 1 has moved away, or until you don't give train 2 a choice (by removing tracks).

This is not a bug.
There is a balance between taking a longer road now, or waiting for the shorter road to get clear. Since normally clearing is fast, the latter is preferred here.
The two-way signal is bad to use, as a train may arrive from the other side. As such, the one-way signal is better. In fact so much better that it is worth the detour.

In any case, path signals use heuristics, and while they are generally very good, heuristics get it wrong some of the time too. This is one of those cases.

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This comment was imported from FlySpray: https://bugs.openttd.org/task/6305#comment13927

@DorpsGek
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DorpsGek commented Jun 6, 2015

AAKLex wrote:

Tnx for comment. I think about build 3-line road two-way direction.


This comment was imported from FlySpray: https://bugs.openttd.org/task/6305#comment13947

@DorpsGek
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andythenorth closed the ticket.

Reason for closing: Not a bug

Not a bug :)


This comment was imported from FlySpray: https://bugs.openttd.org/task/6305

@DorpsGek DorpsGek added flyspray This issue is imported from FlySpray (https://bugs.openttd.org/) bug labels Apr 7, 2018
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