Workingman wrote:Ossie, I know that you have an interest in trains and things. Is there any reason why the idea of building high(er) speed lines alongside the existing main lines has been dropped.
I saw it proposed as an alternative to HS a long time ago, but it has disappeared into the long grass. We would have got at least one fast East/West route and all the major cities would be connected including Glasgow, Edinburgh and Newcastle.
I don't think it was ever considered to be a realistic approach, WM. If you look at the West Coast Main Line, it (a) runs directly through the middle of a lot of conurbations (Watford, Milton Keynes, Rugby) - historically the towns expanded around the existing railway - and (b) it's not exactly straight-line. It's far easier to engineer HS2 as an entirely new-build, and it is, in the event (but only to a certain extent), following the path of disused railway lines anyway, as Cromwell & yourself pointed out earlier.
As for Glasgow, constructing a straight HS2 through the Lune Valley north of Preston towards Carlisle alongside the existing line would be an engineering nightmare. It's one of the reasons why geographically, Britain doesn't lend itself to high speed rail. There again, there's no point considering extending HS2 to Glasgow / Edinburgh as following their independance in 2014, we'll have to erect Border posts and controls at Carlisle and Berwick which will negate any time saving anyway. "Open your suitcase, Madam ... have you declared that haggis?"
As far as East/West is concerned, there isn't really much of a demand for it. OK, there are proposals to link Cambridge thrrough to Oxford via Bedford, Milton Keynes and Bicester which are in the current rail plan and might arrive (well, the Oxford - Bedford stretch) by around 2017. But, as has been pointed out by commentators more informed than me, everything revolves around London. In fact, it's interesting to read reports that HS2, far from creating wealth in the Midlands, might drain it away to the Smoke. When they improved the frequency and reliability of the West of England line in the 1980s and 1990s (Waterloo - Salisbury - Yeovil - Exeter), the area where we lived, South Somerset, quickly became commuter-belt London ......