In article , (Roland Perry)
wrote:

In message


, at 09:36:55 on Mon, 25 Feb 2013, Neil Williams
remarked:
SDO is normally used to allow one set of doors to be off the platform,
not an entire coach at each end.

SDO is presently used at Bletchley for 4 cars (a whole unit) off the end
of the 8 car platform on a number of trains. The platform is being
extended, but it has been used in that manner for well over 2 years.

Until they recently lengthened the platform, northbound HSTs stopping
at Loughborough had the rear three coaches locked out, and the front
three southbound. That's for decades.

They also used SUO (selective unit opening - I just made that up) on
the rear unit of some 4+4 (or maybe 5+5) Meridians between Nottingham
and Loughborough southbound in the morning each hour, opening up the
rear unit for the first time at Leicester.

Infamously, Meridians (like Voyagers) don't have a corridor
connection between the two units.

Some FCC slows from Cambridge to the Cross do that, even using 317 units
that do have corridor connections. An 8-car leaves Cambridge with the back
unit locked out and stops at stations to Royston with only the front 4-car
unit occupied. At Royston they open up the back unit.

--
Colin Rosenstiel

In message , at 15:35:56
on Tue, 26 Feb 2013, remarked:
They also used SUO (selective unit opening - I just made that up) on
the rear unit of some 4+4 (or maybe 5+5) Meridians between Nottingham
and Loughborough southbound in the morning each hour, opening up the
rear unit for the first time at Leicester.

Infamously, Meridians (like Voyagers) don't have a corridor
connection between the two units.

Some FCC slows from Cambridge to the Cross do that, even using 317 units
that do have corridor connections. An 8-car leaves Cambridge with the back
unit locked out and stops at stations to Royston with only the front 4-car
unit occupied. At Royston they open up the back unit.

Sounds like exactly the same solution is being applied there.

And looking the other way through the telescope, last year I was on an
Electrostar from Liverpool St to Ely, having been sent from Stansted via
Bishops Stortford because XC had collapsed, and they had locked the
corridor connection to the front unit - which was confusing because they
wanted people travelling north of Cambridge to move into that unit while
they split the rest of the train off at Cambridge. The explanation in
uk.r at the time was they didn't want to spend extra time at Cambridge
locking the connection before splitting.
--
Roland Perry

On 26/02/2013 21:35, wrote:

Infamously, Meridians (like Voyagers) don't have a corridor
connection between the two units.

Some FCC slows from Cambridge to the Cross do that, even using 317 units
that do have corridor connections. An 8-car leaves Cambridge with the back
unit locked out and stops at stations to Royston with only the front 4-car
unit occupied. At Royston they open up the back unit.

SWT do it on their 8-car 458 worked Aldershot-Waterloo via Ascot services.

The corridor connection is only available for staff use, and due to the
short platforms at Frimley, Camberley and Bagshot, the rear unit is
locked out of use until Ascot.

Unfortunately, this often leads to passenger confusion at Ash Vale, as
it has an 8 car platform and the 4 unlocked cars are at the opposite end
of the platform to the station entrance. The PIS doesn't make it clear
where you need to stand so unsuspecting passengers are often caught out.
Many guards will wait for passengers to run up the platform, but I've
seen quite a few left behind!

Spyke wrote:
On 26/02/2013 21:35, wrote:

Infamously, Meridians (like Voyagers) don't have a corridor
connection between the two units.

Some FCC slows from Cambridge to the Cross do that, even using 317 units
that do have corridor connections. An 8-car leaves Cambridge with the back
unit locked out and stops at stations to Royston with only the front 4-car
unit occupied. At Royston they open up the back unit.

SWT do it on their 8-car 458 worked Aldershot-Waterloo via Ascot services.

The corridor connection is only available for staff use, and due to the
short platforms at Frimley, Camberley and Bagshot, the rear unit is
locked out of use until Ascot.

Unfortunately, this often leads to passenger confusion at Ash Vale, as it
has an 8 car platform and the 4 unlocked cars are at the opposite end of
the platform to the station entrance. The PIS doesn't make it clear where
you need to stand so unsuspecting passengers are often caught out.
Many guards will wait for passengers to run up the platform, but I've
seen quite a few left behind!

Will the revamped version of these trains with new cabs not allow passenger
use use of the connection?

SDO is normally used to allow one set of doors to be off the
platform,
not an entire coach at each end.

LDO ?

For some NR services two or more coaches can be right off the platform.

[...]

(And other similar comments.)

Yes, for some reason I was thinking of a particular kind of SDO and
failed to remember that there are others, including the sort that cuts
out an entire unit.

--
Clive D.W. Feather | Home:
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