Once the 1930s electrifcations were done the die was cast. There is essentially just too much of it to swap it over, especially given the complexity of the track layouts in inner south London
I don't think that SWT's network is particularly complex in reality - e.g. Waterloo - Clapham Junction looks like an eight-track railway, but it's really four two-track routes that don't see a great deal of interworking/ swapping.
I reckon you could do it bit by bit - e.g. convert the Barnes lines (esp when Crossrail2 cuts the direct service from Richmond to Kingston) out to Reading whilst leaving the Wimbledon lines for a later date.
The "South Central Metro" is a different story, but nobody is suggesting converting that to AC any time soon. From memory, the next bit of DC may be Kent (which will need rebuilding sometime soon IIRC?)
Whats new is that the idea had taken hold in some quarters of converting the entire third rail network to 25kV a.c. with no new sections of third rail to be countenanced, even infill. This report seems to suggest that common sense has prevailed and mass conversion of the third rail is firmly in flying pig territory
I don't remember anyone serious claiming that - so I don't think that the needle has swung back in favour of DC with this latest RUS.
Existing DC routes will probably still be converted to AC
once they reach the stage where all infrastructure becomes life expired , but we have a stand-off between the DfT and Network Rail about how much of a priority anything else is.
Did anyone else spot that the double decker trains were being considered with 26m coaches?
If, therefore, Basingstoke to Waterloo is cleared for that as well as the diversionary section of the WofE line it's not a massive leap to assume that IEP's could be used to provide through services
I'm sure I recall seeing people claim that it would cost crazy money to convert lines to deal with 26m IEP carriages - yet it seems feasible on more and more lines.
Back on more sensible ground, to cover for the conversion of the 444's and 450's to dual voltage there could be an order for extra trains for the electric services to Salisbury, with at least some of them delivered early to cover for those units being converted. It would assume that electrification of the lines were to happen early in CP6
Hopefully. Lots of 158/159s to cascade elsewhere (if Basingstoke - Salisbury - Southampton is wired).
Also, as I've suggested in the past, electrification to Yeovil could allow a cross platform change from a DMU to EMU, with the DMU running between Westberry and Exeter.
You've mentioned this a few times, and I've not been convinced.
But now, with the idea of wiring Basingstoke - Salisbury - Southampton on the agenda, I'm coming round to your way of thinking.
If bi-mode IEP allows a half hourly Paddington - B&H - Exeter service (i.e. extending the Bedwyn service further west) then cutting the existing Waterloo - Exeter service at Yeovil would get my vote (free up a lot of DMUs, though I'm not wholly convinced of huge benefits of regular direct services between Junction and Pen Mil).
at some point the extending the length of trains, and the increasing the number of trains per hour are both going to reach their practical limits. If growth in demand continues beyond 2043 the option may have to be revisited, but yes it it would be disruptive and expensive
There's a real elephant in the room here - we can't just extend to sixteen/twenty coach trains (and beyond), we can't price millions of existing passengers off trains, we apparently can't build new lines through green belt... not sure what we'll do.
Re AC-DC conversion; that will be covered in detail when the Electrification RUS is refreshed early in 2015. I suspect though that part of the problem is that NR does not have the necessary skilled planning resources to handle this work, and that it would probably be better if the program management was contracted to one of the specialists
True about the RUS.
Re the cost/skills, I wonder if we are going to see a stand-off between Network Rail and the DfT regarding who'll pay for more electrification (hardball?)
As an aside I notice that in this 'route study' they are now suggesting a 2 tph Waterloo - Portsmouth service via Eastleigh.
That surprises me - given that (obviously) any Waterloo - Portsmouth services are slower that way and that any Waterloo - Eastleigh - Portsmouth/ Bournemouth service (which I'd have thought would have a better case).
Obviously there are intermediate places - Fareham has a decent catchment area - but I'm still surprised that this would be a priority (as an outsider, not claiming any insight).
a fully loaded 8-car class 455 is equivalent to about 5km of road space, bumper to bumper, if all those passengers were to travel by car.
I wish the industry would advertise things like this better - that's a really good advert for trains
Also, people from places like Honiton and Axminster want to go to London, not a station in the western suburbs named after a peruvian bear...
Paddington is an absolute PITA
Biased much?
I'm not sure if this may tie in with the Oxford to Bedford East - West rail project or not.
If that is the case, this may be an additional service.
The calling pattern I would desire would be Southampton Central, Southampton Airport Parkway, Eastleigh (connections from Portsmouth and LBSC Railway stations), Winchester, Basingstoke, Reading West, Didcot Parkway, Oxford, Bicester Town, Bletchley, Bedford Midland, Kettering, Leicester London Road, Derby, Sheffield, Barnsley, Wakefield Kirkgate, Pontefract Monkhill, Goole, Gilberdyke, Brough, and Hull
Via the single track line that sees one train a day?