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Old September 25th 06, 07:48 PM posted to uk.transport.london
Mizter T Mizter T is offline
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Default Heathrow T4 tube station open again

asdf wrote:

On 22 Sep 2006 01:34:21 -0700, Mizter T wrote:

It's the latter AIUI - i.e. trains will run either:

(1) Hatton Cross - T4 - T123 - Hatton Cross in the loop
or
(2) Hatton Cross - T123 - T5 where they'll terminate and then reverse.

The service will be split half/half.


Isn't it 2/3 T5 vs 1/3 T4? Or perhaps I'm imagining that.


No you're not imagining that - my assertion that the service will be
split half/half was wrong - it will indeed be two-thirds to T5 (10 tph)
and one-third to the T4 loop (5tph) according to one of utl's favourite
reference sources...

http://www.alwaystouchout.com/project/6

This makes sense as Terminal 5 is a big beast and will serve far more
passengers than T4 (though I don't have the actual numbers to hand).


Those going to T123 will find
themselves there quicker on a train that goes to T5, as they won't have
to go round the loop. In practice I guess the time penalty for being on
a T4 loop train won't be that great so maybe just a few savvy
passengers with light or no luggage will hop between trains to take
advantage of this.


I remember reading that T4 trains will have a layover in the platform
at T4 station, so for T123 it would probably be quicker to wait 5
minutes and catch the following T5 train.


The alwaystouchout page confirms that trains will lay over at T4. Given
the through trains going to and coming from the T5 terminus then it
won't be possible for trains to lay over at T123 anymore. It would
indeed therefore seem that T4 loop trains will be less desirable for
those going to T123. The layover period isn't that long but nontheless
I can imagine a train load of passengers anxiously asking staff why
they're stuck at T4 when they want to be at T123.

I don't know much about layovers on the tube, but it seems it would be
preferable if it were kept at T4 for as short a period as possible -
i.e. a quick change of driver (and perhaps a rapid litter blitz) before
the train continued on it's way. Trains could be held at T123 for a
short while to maintain proper service spacing (can't remember the
right term!) on the westbound Piccadilly line.