Provision of cautionary aspects (Regulations)

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Provision of cautionary aspects (Regulations) 21/04/2014 at 00:12 #59180
CTCThiago
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232 posts 		Hello,

C7.1.2 Provision of cautionary aspects

"The signalling system shall control signal aspects to provide each train with sufficient warning of the need to stop at a signal
at danger, or reduce speed by a required location, in accordance with the aspect sequences."

Font: RGS Online "GKRT0060 Iss 4"

We already have this function on Signals tab in F11 "Hold at most restrictive aspect", is it possible to add another tick box with this function: "Hold at most(or least(depending on the situation)) cautionary aspect"?

Only working to:

3-aspect:

If we tick "Hold at most restrictive aspect" = Aspect "RED"
If we tick "Hold at most cautionary aspect" = Aspect "YELLOW"

4-aspect:

If we tick "Hold at most restrictive aspect" = Aspect "RED"
If we tick "Hold at most cautionary aspect" = Aspect "YELLOW"
If we tick "Hold at least cautionary aspect" = Aspect "YELLOW-YELLOW"

And if possible, to get acess for clients in Multiplayer.

Cheers,
Thiago.
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Provision of cautionary aspects (Regulations) 21/04/2014 at 01:03 #59181
Finger
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220 posts 		" said:
C7.1.2 Provision of cautionary aspects

"The signalling system shall control signal aspects to provide each train with sufficient warning of the need to stop at a signal
at danger, or reduce speed by a required location, in accordance with the aspect sequences."

Yes, and Simsig actually does this correctly every moment a signal aspect changes. Do you have any indications of the contrary (where eg. a green aspect would lead to red, or yellow or flashing yellow in 4-aspect area)?

I would rather oppose to giving preternatural powers from F11 to clients.
Last edited: 21/04/2014 at 01:04 by Finger
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Provision of cautionary aspects (Regulations) 21/04/2014 at 01:22 #59183
Firefly
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521 posts 		CTCThiago

That standard GK/RT0060 tells designers and testers how the signalling system should work. Clause C7.1.2 is basically saying you can't just spring a red aspect on a driver, the system must be designed to automatically give cautionary aspects prior to the red signal. (Hence a red signal is always preceded by a yellow signal.)

There is no way in the real world that a signaller or anyone else for that matter can interfere with the aspect sequence other than making a wiring alteration or disconnection in which case it must be designed to do so.

There is such a thing as MAY (Main Aspect Restricted from Yellow) for junction signalling however this is planned and designed to be there, it's requirement is decided early in the design stage of a signalling scheme and it will be effective 100% of the time (you couldn't switch the facility on and off as you required).

What scenario are you thinking of where you'd need to restrict a signal to it's most restrictive cautionary aspect? If we ever needed to do this we would place temporary approach control on the signal ahead of the one we want to hold at caution. Temporary approach control holds the signal at red until the approach track circuit is occupied and therefore it holds the signal in rear at single yellow.

Hope this makes sense.

FF
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The following user said thank you: CTCThiago
Provision of cautionary aspects (Regulations) 21/04/2014 at 01:30 #59184
CTCThiago
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232 posts 		" said:
CTCThiago

That standard GK/RT0060 tells designers and testers how the signalling system should work. Clause C7.1.2 is basically saying you can't just spring a red aspect on a driver, the system must be designed to automatically give cautionary aspects prior to the red signal. (Hence a red signal is always preceded by a yellow signal.)

There is no way in the real world that a signaller or anyone else for that matter can interfere with the aspect sequence other than making a wiring alteration or disconnection in which case it must be designed to do so.

There is such a thing as MAY (Main Aspect Restricted from Yellow) for junction signalling however this is planned and designed to be there, it's requirement is decided early in the design stage of a signalling scheme and it will be effective 100% of the time (you couldn't switch the facility on and off as you required).

What scenario are you thinking of where you'd need to restrict a signal to it's most restrictive cautionary aspect? If we ever needed to do this we would place temporary approach control on the signal ahead of the one we want to hold at caution. Temporary approach control holds the signal at red until the approach track circuit is occupied and therefore it holds the signal in rear at single yellow.

Hope this makes sense.

FF
Thanks to clarify this subject to me, I think, I misunderstood the subject, but Thanks anyway.

Cheers,
Thiago.
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