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
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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.

On Wed, 3 Dec 2008 12:57:10 -0000, wrote:

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

Indeed. It was the introduction of this on the S-Bahn in 2000 (the
U-Bahn had had it for years, though not at all stations) that finally
did away with the charming old tungsten-lit pre-war EMUs.

Neil

--
Neil Williams
Put my first name before the at to reply.

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

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.

Jubilee Lines stock does as well.

--
Nick

"Clive D. W. Feather" wrote in message
...
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.

Less infrastructure and less cost?