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| Approach control on EY653 at Dalmeny 24/03/2010 at 17:33 #974 | |
Andrew G
552 posts 
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I'm not sure if this is correct and possibly due to a lower line speed, but I would have expected that routes from EY653 to the Down and Up Passenger Loops at Dalmeny would be approach controlled. As things stand EY653 clears to Off immediately for all 3 possible routes.
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| Approach control on EY653 at Dalmeny 24/03/2010 at 17:33 #7748 | |
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Andrew G
552 posts
|
I'm not sure if this is correct and possibly due to a lower line speed, but I would have expected that routes from EY653 to the Down and Up Passenger Loops at Dalmeny would be approach controlled. As things stand EY653 clears to Off immediately for all 3 possible routes.
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| Approach control on EY653 at Dalmeny 24/03/2010 at 20:04 #7752 | |
Firefly
521 posts |
It depends on the line speed off of the Winchburgh line. I don't have any easy access to the sectional appendix any more but if you can email me a copy or if you happen to know the line speeds I'll have a look at it.
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| Approach control on EY653 at Dalmeny 24/03/2010 at 20:40 #7754 | |
postal
5265 posts |
Line speed is 50mph, reducing to 40mph approaching then 30mph over junction according to Sectional Appendix I downloaded from http://www.networkrail.co.uk/browseDirectory.aspx?dir=Baseline%20CapabilityTrack%20and%20route%20mileage,%20Permissible%20line%20speeds&pageid=5523&root= (SC113-001 on P200 of the document). Beware - it is a 190Mb download for the Scottish document “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 Log in to reply |
| Approach control on EY653 at Dalmeny 24/03/2010 at 20:53 #7755 | |
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Firefly
521 posts |
Thanks. Just downloading all 190mb!! I hadn't realised you could get copies of an albeit outdated section appendix online. Log in to reply |
| Approach control on EY653 at Dalmeny 24/03/2010 at 20:53 #7756 | |
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Andrew G
552 posts
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I am afraid that I don't have access to that information either. I think I have a Sectional Appendix from a few years ago, but as usual when you want these things I can't find it. I suppose my question is why is approach control on EY651 for the routes to the passenger loops but not on EY653. Has it been left off intentionally?
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| Approach control on EY653 at Dalmeny 24/03/2010 at 21:12 #7757 | |
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Firefly
521 posts |
ok downloaded it now. EY651 has approach control to the loops because the linespeed on approach to the junction is 60mph (80 for HST's) and the speed into the Down Passenger Loop is 40mph. (the xover for the UPL is 30mph). The linespeed off of the Winchburgh line is 30mph. Because all trains must be doing 30mph there is no need to apply approach control to EY653 signal because drivers will be expecting to do 30mph at the junction, will have seen the route indication given on EY653 and accelerate accordingly. Hope that helps Kev Log in to reply |
| Approach control on EY653 at Dalmeny 24/03/2010 at 22:07 #7759 | |
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Andrew G
552 posts
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Thanks for looking into this and confirming that the lower line speed has removed the need for approach control.
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