D7666 wrote:
DOO

CCTV

mirrors


OK, I stand corrected on the DOO mirror / CCTV issue.

However, a question then, in our 21st HSE nazi state would they not
required CCTV for any new DOO implementation ? Perhaps I have read
this somewhere any maybe thats where I got the idea from ?

Surely it would depend on the length of the train? A mirror might be
perfectly acceptable for a 2- or 3-car train, but not for 6 or 8 cars.

By the way, please don't use the word 'nazi' to describe something that's
just irritating. It's gratuitous exaggeration, doesn't help your argument,
and devalues the horrors of the real Nazis.
--
Richard J.
(to email me, swap 'uk' and 'yon' in address)

On 25 Nov, 14:05, "Richard J." wrote:

Surely it would depend on the length of the train? *A mirror might be
perfectly acceptable for a 2- or 3-car train, but not for 6 or 8 cars.

Might it be easier to fit CCTV to the train rather than the platform?
I think some of the Electrostars have this facility?

Neil

"Neil Williams" wrote in message
...
On 25 Nov, 14:05, "Richard J." wrote:

Might it be easier to fit CCTV to the train rather than the platform?
I think some of the Electrostars have this facility?

Southern trains have this.

In article
,
Neil Williams writes
Might it be easier to fit CCTV to the train rather than the platform?

You still need to fit the cameras and the wiring. All it saves is the
cost of the monitors, but at the expense of a transmission system.

The Northern and Central Lines have this, but that's mostly because
there's no room to retro-fit the monitors in tube stations.

--
Clive D.W. Feather | Home:
Tel: +44 20 8495 6138 (work) | Web: http://www.davros.org
Fax: +44 870 051 9937 | Work:
Please reply to the Reply-To address, which is:

On Dec 2, 6:55*am, "Clive D. W. Feather" cl...@on-the-
train.demon.co.uk wrote:
In article
,
Neil Williams writes

Might it be easier to fit CCTV to the train rather than the platform?

You still need to fit the cameras and the wiring. All it saves is the
cost of the monitors, but at the expense of a transmission system.

The Northern and Central Lines have this, but that's mostly because
there's no room to retro-fit the monitors in tube stations.


But don't the Electrostars have the cameras on the train, so there is
no transmission system needed, other than feeds into the train's own
systems.

You can see the cameras down the side of the train in this image:

http://www.railfaneurope.net/pix/gb/...377-432-mt.jpg

The Northern and Central lines are more complex of course, there
probably isn't space for cameras on the side of the cars.

"Andy" wrote in message
...

But don't the Electrostars have the cameras on the train, so there is
no transmission system needed, other than feeds into the train's own
systems.

You can see the cameras down the side of the train in this image:

http://www.railfaneurope.net/pix/gb/...377-432-mt.jpg

The Northern and Central lines are more complex of course, there
probably isn't space for cameras on the side of the cars.


But technology can allow for smaller cameras and easier installation, can't
it?

Retractable mirrors can also be an option in some places, though granted
they might not be effective everywhere on LUL.

On Dec 3, 12:17*am, wrote:
"Andy" wrote in message

...

But don't the Electrostars have the cameras on the train, so there is
no transmission system needed, other than feeds into the train's own
systems.

You can see the cameras down the side of the train in this image:

http://www.railfaneurope.net/pix/gb/...377-432-mt.jpg

The Northern and Central lines are more complex of course, there
probably isn't space for cameras on the side of the cars.

But technology can allow for smaller cameras and easier installation, can't
it?


Sure, but they still have to pertrude from the side of the train in
order to cover the doors etc. My understanding is that the current
Northern and Central line tube stock is a very tight fit to the
loading gauge in a few places and even a couple of millimeters would
be too much extra for trains to run safely at line speed.

Retractable mirrors can also be an option in some places, though granted
they might not be effective everywhere on LUL.

Andy wrote in news:2f81c2b5-8894-48a0-a547-
:

On Dec 2, 6:55*am, "Clive D. W. Feather" cl...@on-the-
train.demon.co.uk wrote:

The Northern and Central Lines have this, but that's mostly because
there's no room to retro-fit the monitors in tube stations.

I was involved in specifying the video transmission system for the Central
Line, and the rationale given at the time was that they wanted (or maybe
were required) to allow the driver to see the images after moving off.

Peter

--
Peter Campbell Smith ~ London ~ pjcs00 (a) gmail.com

"Peter Campbell Smith" wrote

I was involved in specifying the video transmission system for the Central
Line, and the rationale given at the time was that they wanted (or maybe
were required) to allow the driver to see the images after moving off.

This RAIB report explains why.
http://www.raib.gov.uk/cms_resources...g_Broadway.pdf
In this case, the train operator was apparently too concerned about checking
signal aspects (he'd been involved in a previous SPAD) that he didn't notice
in the monitor that the passenger was being dragged along the platform.

Peter

"Peter Campbell Smith" wrote in message
...
Andy wrote in news:2f81c2b5-8894-48a0-a547-
:

On Dec 2, 6:55 am, "Clive D. W. Feather" cl...@on-the-
train.demon.co.uk wrote:

The Northern and Central Lines have this, but that's mostly because
there's no room to retro-fit the monitors in tube stations.

I was involved in specifying the video transmission system for the Central
Line, and the rationale given at the time was that they wanted (or maybe
were required) to allow the driver to see the images after moving off.


Hamburg also has an on-board system for platform monitoring.