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Liverpol Street SX 08 04 2015

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Liverpol Street SX 08 04 2015 19/07/2019 at 18:51 #119511
headshot119
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Liverpol Street SX 08 04 2015

This thread is for discussion of the Liverpol Street SX 08 04 2015 timetable.

"Passengers for New Lane, should be seated in the rear coach of the train " - Opinions are my own and not those of my employer
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Liverpool Street SX 08 04 2015 26/02/2022 at 18:02 #145421
ajax103
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Not sure why this happens if anyone can explain please but when you start the simulation up with this timetable at a time other then the default midnight start, the trains do not seed eg I've tried multiple times to select a 04:00 start instead at start up but no trains seed however if I revert back to the 00:00 start then all trains seed.

Why is this please? Surely the simulation should be able to seed the trains whatever the start time you pick for the timetable?

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Liverpol Street SX 08 04 2015 26/02/2022 at 18:14 #145422
headshot119
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ajax103 in post 145421 said:
Not sure why this happens if anyone can explain please but when you start the simulation up with this timetable at a time other then the default midnight start, the trains do not seed eg I've tried multiple times to select a 04:00 start instead at start up but no trains seed however if I revert back to the 00:00 start then all trains seed.

Why is this please? Surely the simulation should be able to seed the trains whatever the start time you pick for the timetable?
It looks like there's an issue with the 0400 seed group, the 0000 and 1400 ones work fine. Mantis 35810 raised.

"Passengers for New Lane, should be seated in the rear coach of the train " - Opinions are my own and not those of my employer
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The following user said thank you: ajax103
Liverpol Street SX 08 04 2015 26/02/2022 at 19:27 #145424
Dionysusnu
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I'm pretty sure the station is just empty at that time. There's nothing that needs to be seeded. It could be asked why the seed group exists at all in that case, but it's probably for compatibility with chaining sim seed times, and the groundhog day timetable standards as a whole.
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Liverpol Street SX 08 04 2015 26/02/2022 at 19:29 #145425
headshot119
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Dionysusnu in post 145424 said:
I'm pretty sure the station is just empty at that time. There's nothing that needs to be seeded. It could be asked why the seed group exists at all in that case, but it's probably for compatibility with chaining sim seed times, and the groundhog day timetable standards as a whole.
That could well be the case, I don't know the area or timetable well enough to answer that which is why I've raised a Mantis ticket to investigate.

"Passengers for New Lane, should be seated in the rear coach of the train " - Opinions are my own and not those of my employer
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Liverpol Street SX 08 04 2015 26/02/2022 at 19:47 #145426
GeoffM
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ajax103 in post 145421 said:
Not sure why this happens if anyone can explain please but when you start the simulation up with this timetable at a time other then the default midnight start, the trains do not seed eg I've tried multiple times to select a 04:00 start instead at start up but no trains seed however if I revert back to the 00:00 start then all trains seed.

Why is this please? Surely the simulation should be able to seed the trains whatever the start time you pick for the timetable?
From the timetable notes:
Quote:
Platform Closures Wednesday 8th April
Liverpool St P1 to P10 0040 - 0455 Up&Dn Sub Closed
Liverpool St P11 to P12 0110 - 0455
Liverpool St P13 to P18 0140 - 0405
Running the TT from midnight confirms all trains clear out early on, and only start re-appearing sometime after 4am.

There is a typo in the description though, "where" instead of "were" (first sentence of Notes)

SimSig Boss
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Liverpol Street SX 08 04 2015 26/02/2022 at 21:26 #145429
postal
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ajax103 in post 145421 said:
Not sure why this happens if anyone can explain please but when you start the simulation up with this timetable at a time other then the default midnight start, the trains do not seed eg I've tried multiple times to select a 04:00 start instead at start up but no trains seed however if I revert back to the 00:00 start then all trains seed.

Why is this please? Surely the simulation should be able to seed the trains whatever the start time you pick for the timetable?
All of the trains in the TT due to seed at 04:00 enter when the sim is loaded. If you check the TT (and sort by entry time) the seed trains appear at the top of the list and show lots at TT start and 14:00 but none at 04:00.

“In life, there is always someone out there, who won’t like you, for whatever reason, don’t let the insecurities in their lives affect yours.” – Rashida Rowe
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Liverpol Street SX 08 04 2015 26/02/2022 at 21:31 #145430
postal
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Dionysusnu in post 145424 said:
There's nothing that needs to be seeded. It could be asked why the seed group exists at all in that case . . . .
The seed group is a list of trains that need to be in situ in the sim at whatever given time the seed group references. The core piece of information is the start time for the grouping and the trains due to seed at that time are a consequence of the start time chosen. The centrally created TTs have a standard set of TT start, 04:00 and 14:00 start times. The reason for having an 04:00 TT'd start time even if there are no trains in sim is to take account of the fact that there could well be trains due to enter after the reference time that have entry governed by rules from other trains before the reference time. For example a train in the 00:00 reference group may leave the sim before 04:00 but then a second train formed out of the first train enters after 04:00. The TT writer takes account of this when setting up the TT and rules. If you did not have an 04:00 grouping but just started the sim with the 00:00 TT and a start time of 04:00 so as to get more quickly to the morning action, the second train would never enter (and if it is part of a set of out and back shuttle workings none of the trains from further downstream would run either).

“In life, there is always someone out there, who won’t like you, for whatever reason, don’t let the insecurities in their lives affect yours.” – Rashida Rowe
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