"Peter Smyth" wrote in message
...


I think that will happen sooner or later, but at the moment I don't think
they have enough trains to run both services.

Good point about train numbers. Maybe the decision to expand all those
'three car' routes have fouled up the original plans?

Paul S

I would also suggest the current service levels on the new line are
designed to reflect initial demand levels.

It's completely understandable that there's only a need for 2 car
services, every 10 minutes at this moment, what I find most perplexing is
the concept of only going to one destination at a time for hours on end -
is there a good reason why they can't do 3 trains an hour to each
destination all day?

On Sep 3, 10:29*pm, Paul Corfield wrote:
On Sat, 3 Sep 2011 17:44:27 +0000 (UTC), Martin Petrov

wrote:
I would also suggest the current service levels on the new line are
designed to reflect initial demand levels.

It's completely understandable that there's only a need for 2 car
services, every 10 minutes at this moment, what I find most perplexing is
the concept of only going to one destination at a time for hours on end -
is there a good reason why they can't do 3 trains an hour to each
destination all day?

Three trains per hour does not meet the TfL spec for "turn up and go"
services. 4 tph is the minimum standard

So that would exclude Woodford to Hainault, and Earls Court to
Olympia, and Chalfont to Chesham? (and Amersham???)

Yesterday (Sunday), all International trains went towards Wolwich due
to engineering works. I also noted on Thursday that Woolwich trains
seemed to commence at 3.30pm or earlier, rather than the advertised
4pm.

In message , Paul Corfield
wrote:
I think that will happen sooner or later, but at the moment I don't think
they have enough trains to run both services.

Good point about train numbers. Maybe the decision to expand all those
'three car' routes have fouled up the original plans?

I don't get this argument about too few trains.

Let's see. Looking at the current morning peak, we have:

one way round trip spacing
BAN-LEW 3-car 30 minutes 64 minutes 4 minutes 16 trains 48 cars
TOW-BEC 3-car 31 minutes 64 minutes 8 minutes 8 trains 24 cars
BAN-WWA 2-car 31 minutes 64 minutes 8 minutes 8 trains 16 cars
SFI-WWA 2-car 23 minutes 48 minutes 8 minutes 6 trains 12 cars
SFD-CAW 2-car 16 minutes 36 minutes 12 minutes 3 trains 6 cars
SFD-LEW 3-car 35 minutes 72 minutes 12 minutes 6 trains 18 cars

Total 124 cars out of 155. Adding SFI-BEC with 2-car trains adds another
12 cars, making 136. That's 88% utilisation.

Extending the entire existing service to 3-car would take 141 cars;
adding SFI-BEC as well makes 159!

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