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Ardley has been on the cards and being developed for a number of years, this isn't really anything new. The issue will be what gauge can be sorted for the Chilterns or you are in for some very inefficient messing about with Intermodals. If you read SABRE, the "significant improvements" to J10...
Basically, and even that isn't particularly easy depending on where they need to be as it isn't always halfway along as most peoples immediate assumption will be.
Wolves is only two tracks to Wolves North Jn, and I can't see where you can fit another platform on the up side. Your other idea was proposed around 10-15 years ago for Brinsford.
Decarbonising doesn't need what you are proposing, OLE does that. You haven't answered where the need is, what is lacking, where does the increase in capacity need to be and what is it for? Why does everywhere within 30 minutes need 6tph? A lot of London only just achieves that, Liverpool...
The question you have to answer is "why". What is it you are trying to provide and why? I don't see where the land is to 4 track the Cov corridor, nor out to Kings Norton, nor on the Camp Hill. Cross City will eventually go back to 6tph, how many more does it need to be, why does it need to be...
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