british signals

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mato
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british signals

Post by mato »

hello im new here so sorry about this question:
1. in the region north america and switzerland there are 1 "new" signals,in region great britain there are 2 kinds of "new" signal:normal 3 light signal and 4 light signal
is there some diference in use between these two singnals?

2. same question: there are also 2 type of "old" signals in region great britain
diference and use?

sorry about my english
Martin
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Re: british signals

Post by Martin »

Hello and welcome. :)

1. It appears there's no difference in use or operation, I remember some postings about this in an old thread: http://www.tt-forums.net/viewtopic.php?p=353214#p353214

2. Similarly I think these are just differences in appearance.
:)
mato
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Re: british signals

Post by mato »

oh thanks
is any tutorial or good web page to make junctions or signaling?
andel
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Re: british signals

Post by andel »

Answer to #2: the 4 aspect signals give you an additional warning speed and signal stretch as well.
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uktrackbuilder_loco
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Re: british signals

Post by uktrackbuilder_loco »

andel wrote:Answer to #2: the 4 aspect signals give you an additional warning speed and signal stretch as well.
Green then double amber or flashing double amber depending upon whether on not its an approach signal, then single amber and then finally red. The double aspect is used to slow trains down in the approach by forcing a driver to acknowledge a warning command both visual and audible, thus reminding him or her that the next aspect could be the single yellow.
mato
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Re: british signals

Post by mato »

uktrackbuilder_loco wrote:
andel wrote:Answer to #2: the 4 aspect signals give you an additional warning speed and signal stretch as well.
Green then double amber or flashing double amber depending upon whether on not its an approach signal, then single amber and then finally red. The double aspect is used to slow trains down in the approach by forcing a driver to acknowledge a warning command both visual and audible, thus reminding him or her that the next aspect could be the single yellow.
so the 4 lights signals are better then 3 light normal signals?can you post the example screenshot or save game of use the 4 light signals pls
and is there any tutorial or good web page doing junctions and signalling?
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Hammo
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Re: british signals

Post by Hammo »

mato wrote:
uktrackbuilder_loco wrote:
andel wrote:Answer to #2: the 4 aspect signals give you an additional warning speed and signal stretch as well.
Green then double amber or flashing double amber depending upon whether on not its an approach signal, then single amber and then finally red. The double aspect is used to slow trains down in the approach by forcing a driver to acknowledge a warning command both visual and audible, thus reminding him or her that the next aspect could be the single yellow.
so the 4 lights signals are better then 3 light normal signals?can you post the example screenshot or save game of use the 4 light signals pls
and is there any tutorial or good web page doing junctions and signalling?
I don't believe it makes a difference in locomotion which type of signal you use, it's purely cosmetic.

That quote you've got there refers to signalling practices in real train networks. You can disregard this in reference to the game.
uktrackbuilder_loco
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Re: british signals

Post by uktrackbuilder_loco »

It can work as in real life but simply if you attempt to use a three aspect and four aspect colourlight signal you'lll only confuse yourself. Yes the comments I made relate to the use of signalling procedures irl and thus for the purposes of the game could safely be disregarding.
However if you wish to model a junction as would be expected irl you would:

Distant Approach: Four Aspect colourlight , no need to use anything other than a flashing yellow or SOLID green aspect here you never have a flashing green aspect, red and green signals are solid aspects. Four aspect lights are primarily placed as extra approach signals or to provide sufficient braking distances on an at speed approach to a complex track layout. The idea is to delay the train long enough to give proceeding traffic time to clear the pointwork, thus you'd use a flashing amber (yellow) to warn the driver of their need to slow down for a solid aspect at the next signal.

Medium/Local Approach Three aspect colourlight as you have to either give the train a go or slow approach. Again both of these would be solid aspects

Stop Signal: Three Aspect colourlight, main solid aspects would be red or yellow to allow immediate access to the junction. Here you'd either slow or stop the train , the sequence should read

Flashing Amber/Green
Solid Amber
Solid Amber ( if proceed) or
Red to prevent access

if a train runs from a flashing amber to a red then you've got BIG problems!!

Normal procedure in the UK is to use as block signals two aspect lights either Amber/Green or Amber /Red depending upon the location of the signal in the block. ie at the start of the block Amber/Green, middle of the block Amber/Red, then end of the block Three Aspect to control access into the next block. The idea is that you should be able to slow down a train within a braking distance that allows it to be in sight of the next signal, but within a point whereby an over run can cause it NOT to hit a train in the next segment of the block or in the next block. That is why it is now current practice that any driver who files a SPADD is suspended until the enquiry into the circumstances of the incident is completed.
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