On the "Southern add 40 vehicles to order" it is being argued that passengers form Brighton to London (and for that matter Portsmouth) do not want commuter style trains they would rather be able to travel on intercity style trains.
There is nothing wrong with the sentiment and it is likely that if there was such a service it would attract more people to use it. However therein lies the problem, as the services are already fairly busy and there are no free paths to provide the extra trains that would be needed.
The trains from the SWML could well see intercity type trains (well at least all being class 444's rather than having to be 450's) if Crossrail 2 was built as a regional metro taking most of the routes currently serviced by SWT's class 455's. This would free up a lot of paths into Waterloo, so with some other infrastructure projects (grade separating the junction at Woking for instance) this could enable more long distance services to run.
What other potential works would be needed between Woking and Wimbledon (proposed start of the core tunnels for Crossrail 2), assuming the services to Epsom & Chessington South would not need to use the mail line to enter the tunnels, to enable at least an extra 4 trains an hour (1 from Southampton, 2 from Portsmouth and 1 from Salisbury) and ideally with space for a few more (but that would likely require more capacity enhancements further out at places like Basingstoke and Guildford).
For the Brighton Line, would there be a suitable way of removing a lot of the metro type services from the main line so that there could be more Brighton/Gatwick services? Is now the time to look to start thinking about Thameslink 2020 (which won't get finished until much later, so don't worry about the implied date in the title!!) or would a new (almost highspeed) line be more cost beneficial?
Also what do you do about Brighton station, do you remove the east west services from the main station by building a tunnel under it to free up capacity that way (akin to Crossrail)? If you are doing that do you link both services together or do you run them separately (so you don't have disruption to the east causing problems to those in the west and vis-a-versa) with them extending (say for 1-2km) beyond the main station with the possibility of new stations elsewhere in Brighton.
There is nothing wrong with the sentiment and it is likely that if there was such a service it would attract more people to use it. However therein lies the problem, as the services are already fairly busy and there are no free paths to provide the extra trains that would be needed.
The trains from the SWML could well see intercity type trains (well at least all being class 444's rather than having to be 450's) if Crossrail 2 was built as a regional metro taking most of the routes currently serviced by SWT's class 455's. This would free up a lot of paths into Waterloo, so with some other infrastructure projects (grade separating the junction at Woking for instance) this could enable more long distance services to run.
What other potential works would be needed between Woking and Wimbledon (proposed start of the core tunnels for Crossrail 2), assuming the services to Epsom & Chessington South would not need to use the mail line to enter the tunnels, to enable at least an extra 4 trains an hour (1 from Southampton, 2 from Portsmouth and 1 from Salisbury) and ideally with space for a few more (but that would likely require more capacity enhancements further out at places like Basingstoke and Guildford).
For the Brighton Line, would there be a suitable way of removing a lot of the metro type services from the main line so that there could be more Brighton/Gatwick services? Is now the time to look to start thinking about Thameslink 2020 (which won't get finished until much later, so don't worry about the implied date in the title!!) or would a new (almost highspeed) line be more cost beneficial?
Also what do you do about Brighton station, do you remove the east west services from the main station by building a tunnel under it to free up capacity that way (akin to Crossrail)? If you are doing that do you link both services together or do you run them separately (so you don't have disruption to the east causing problems to those in the west and vis-a-versa) with them extending (say for 1-2km) beyond the main station with the possibility of new stations elsewhere in Brighton.