Todays Railways UK▸ (December 2014 Issue 156) has an article on the NR» Western Route Study headed Last HSTs▸ To Go By 2043. It's based on rolling stock requirements up to that date.
One of the interesting things that the
DfT» does (and thank goodness) is to project ahead on rolling stock requirements, as well as on infrastructure requirements via the Route Study. I would suspect that the article, and the route study, may draw on that work.
But ... who can predict what growth rates we'll see in the next 30 years? The stock requirements were, I recall, based on growth considerably below the typical rate for recent years. Passenger / user group experts and transport academics broadly agree that the recent growth rate won't be sustained over the very long term, but they suggested that it would be
somewhat below the current rate rather that
considerably below it. And whilst the two views might not vary things much over 2 or 3 years, they sure as heck do over 30.
I can understand government erring on the side of caution. To commit to heavy investment, at a time of fiscal prudence, with the risk of providing a solution to a stock problem that doesn't exist and having lots of spare trains in decades to come is something they want to avoid, after all. Yet perhaps they have been too cautious.
Some examples?
Growth at 7.5% - the sort of thing we've seen in a number of recent years.
100 passengers this year. 143 passengers in 5 years. 206 passengers in 10 years. 425 passengers in 20 years
Growth at 4.5% - the lower end of passenger and academic expectations
100 passengers this year. 124 passengers in 5 years. 155 passengers in 10 years. 241 passengers in 20 years
Growth at 2.5% - the sort of thing the DfT is thinking may happen (as I recall)
100 passengers this year. 113 passengers in 5 years. 128 passengers in 10 years. 164 passengers in 20 years
So in 2034, that means that the independent experts are saying there will be a 46% shortfall (at least - that's their low figure) in capacity. So what a relief if the HSTs can carry on for a few more decades