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Hi,
Network Rail Standard NR/L3/SIG/11202 depicts a new format of Control Table where as one of the Post in this Site is of an older one.
Please clarify the exact format that can be used if I want to attempt control tables with UK railway signalling principles.
Thanks & Regards.
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It is quite clear; you can use ANY format with which you are familiar- this does not have to be exactly like any particular format of any particular railway. You'd be well advised to base it on one with which you are familiar, but do not be afraid to simplify it a bit- what is a good format for CAD / automated production in a real environment probably isn't for exam conditions.
The new standard (which incidentally I played a significant part in producing) will hardly yet have been used anywhere- I doubt whether any site has been commissioned that uses it yet. Hence I feel it unlikely that it would be anyone's preferred format. Indeed it has been designed exclusively for SSI (and derivatives) and has benefits for complicated areas and gives overall economy by separating out the route locking and approach locking lookback etc and putting on separate tables and utilises summation Control Tables. The overhead of producing these for the whole layout when only being asked to do the Control Tables for a couple of points and a few routes renders it TOTALLY INAPPROPRIATE for the exam. I guarantee that the examiners won't know the details of the new standard and may even be unaware of its existence- most of the regular mod3 examiners don't actually work for Network Rail!
I wouldn't use the previous version of 11202 either- at least without considerable simplification as explained in previous posts and for which several student's modified versions appear as examples on this site.
If you read the various past exam reviews you'll discover that the examiners generally recommend use of a column based Control Table. I think they may well be right re speed in the exam is concerned, and again there are examples of such on this site. If you are starting from scratch then I'd recommend; if however you work entails regular use of the older 11202 and you are experienced with them, then perhaps worth using a design based on that style to avoid needing to re-learn and potentially confusing yourself.
See also:
http://www.irseexam.co.uk/showthread.php...ght=format
http://www.irseexam.co.uk/showthread.php...ight=11202
PJW