HSTEd
Veteran Member
- Joined
- 14 Jul 2011
- Messages
- 20,380
Even with no investment you still get 2 platforms capable of taking ~340m trainsets at Leeds.If the NPR line is to be a full new build line and if Leeds station was adapted to take 400m trains, perhaps there would be a case, although that does not seem to be happening. If the Independent report is correct, the the government has shown its hand in terms of investment east of Huddersfield - I.e. no investment.
4x340m trainsets is still a lot compared to the current offer.
And if they end up wildly oversubscribed that strengthens the case to go back to the Treasury for more money.
Right now we have 3 11-car Pendolinos to Manchester and 2 9-car IEPs (2x5 has about the same number of seats) to Leeds.Plus 4x400m tph between London and Leeds via Manchester is simply not enough capacity. London-Manchester alone is meant to be 3x400m tph, and then you have to allow for trans pennine passengers. Under that plan you’re effectively reducing the London-Manchester capacity down to 2x400 tph.
3 x 589 seats + 2 x 611 = 2989 seats per hour.
A 340m IEP-equivalent is going to have something like 13-cars.
A 13-car IEP is going to have capacity of around ~336 (84x4) more seats than a 9-car set.
Which means each set could easily have about 947 seats.
947 x 4 = 3788 seats per hour.
It's still a 26.7% uplift over the status quo - and like I said, if it ends up oversubscribed then the railway authorities have a strong case to go back to the Treasury for platform lengthening at Leeds.
HS2's capacity assesments were for a very long term projection, we are talking about a much more near term scenario here.