bug report: unable to set route combination

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bug report: unable to set route combination 25/11/2009 at 02:58 #299
Tekky
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5 posts 		In the lastest King's Cross V2.201 using the latest system files, after setting a route from signal 454 to 448 (between Bounds Green Depot and Alexandra Palace), I am unable to set any routes to signal 454. Trying to set a route from signal 476 or signal 474 to signal 454 both fail with the following error message:

"Point(s) locked reverse by another route"

Is my assumption correct that this is a bug?
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bug report: unable to set route combination 25/11/2009 at 02:58 #4511
Tekky
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5 posts 		In the lastest King's Cross V2.201 using the latest system files, after setting a route from signal 454 to 448 (between Bounds Green Depot and Alexandra Palace), I am unable to set any routes to signal 454. Trying to set a route from signal 476 or signal 474 to signal 454 both fail with the following error message:

"Point(s) locked reverse by another route"

Is my assumption correct that this is a bug?
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bug report: unable to set route combination 25/11/2009 at 03:11 #4512
AndyG
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1843 posts 		It's because the routes 476/474 to 454 both require the overlap beyond 454 to be on the SL.
To send a train 454 to 458, you need to set route to 454 only, wait for the train to stop at 454 and after about a minute the white overlap will 'drop-out'. You will then be able to set the route 454-448.

It's a safety feature, it would be unsafe for a train to overshoot 454 with the points set to the goods line. There is a similar instance at the northern end of Hitchin Up Yard, signal 944.

Hope that helps, also see http://www.SimSig.co.uk/dokuwiki/doku.php?id=usertrack:glossary:overlap and associated links
I can only help one person a day. Today's not your day. Tomorrow doesn't look too good either.
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bug report: unable to set route combination 08/12/2009 at 22:13 #4930
Tekky
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5 posts 		Thanks for your reply. I am happy to see that the behavior I reported was intended and not a bug.

However, I don't understand why the UK signalling system uses the concept of delayed yellow. Wouldn't it be more meaningful to simply impose a stricter speed limit well in advance, to reduce the danger of a critical SPAD?
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bug report: unable to set route combination 08/12/2009 at 22:37 #4931
sloppyjag
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480 posts 		That would go down well on an already overloaded section of line, putting a permanent 15-20mph restriction on a section with a line speed of 75-90mph to protect a crossover used maybe only a couple of times a day. And do you likewise protect every crossover the same way the length and breadth of the UK?
Planotransitophobic!
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bug report: unable to set route combination 08/12/2009 at 23:30 #4932
Tekky
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5 posts 		sloppyjag said:
That would go down well on an already overloaded section of line, putting a permanent 15-20mph restriction on a section with a line speed of 75-90mph to protect a crossover used maybe only a couple of times a day. And do you likewise protect every crossover the same way the length and breadth of the UK?

Does the UK signalling system require the speed limit of a section of line to be fixed? Here in Germany, the speed limit can be set dynamically, so that the signal displays a speed limit depending on the route that is set for the train.
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bug report: unable to set route combination 09/12/2009 at 12:50 #4940
kbarber
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1764 posts 		Tekky said:
sloppyjag said:
That would go down well on an already overloaded section of line, putting a permanent 15-20mph restriction on a section with a line speed of 75-90mph to protect a crossover used maybe only a couple of times a day. And do you likewise protect every crossover the same way the length and breadth of the UK?

Does the UK signalling system require the speed limit of a section of line to be fixed? Here in Germany, the speed limit can be set dynamically, so that the signal displays a speed limit depending on the route that is set for the train.

Our signalling is route-based not speed-based, so the signal indicates the route to be taken & the speed limits are set for the line (different speeds for main line & turnout). Of course neither system gives sufficient information so a degree of speed information is overlaid on our route system (flashing yellows at high speed turnouts & delayed yellows at low speed ones) while some route information is overlaid on your speed signals (indications of crossing to opposite line etc).
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