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Old March 13th 08, 12:32 PM posted to uk.transport.london
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Default LEDs on the front of Picc trains.

Hi Folks,

I've noticed on the front right window (if you are in the cab) there
it a "thing" pointing forward with a lot of clear LEDs in it. It's
located slightly below where the windscreen wiper motor is.

I have asked a couple drivers and they either won't tell me or claim
they don't know.

They are all clear LEDs. Could it be some IR LEDs / sensors?
Collision / proximity detection perhaps?

I was just curious but now that the drivers don't know, it's made it
worse


TIA

Cheers,
C rispin

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Old March 13th 08, 12:40 PM posted to uk.transport.london
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Default LEDs on the front of Picc trains.

wrote:
They are all clear LEDs. Could it be some IR LEDs / sensors?
Collision / proximity detection perhaps?


Possibly some sort of forward facing camera? We have some CCTV cameras
at work which have clear LEDs around the lens
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Old March 13th 08, 12:46 PM posted to uk.transport.london
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Default LEDs on the front of Picc trains.

On Mar 13, 1:32 pm, wrote:
Hi Folks,

I've noticed on the front right window (if you are in the cab) there
it a "thing" pointing forward with a lot of clear LEDs in it. It's
located slightly below where the windscreen wiper motor is.

I have asked a couple drivers and they either won't tell me or claim
they don't know.

They are all clear LEDs. Could it be some IR LEDs / sensors?
Collision / proximity detection perhaps?

I was just curious but now that the drivers don't know, it's made it
worse

TIA

Cheers,
C rispin


It's a detrainment light, to provide some lighting on the emergency
steps.
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Old March 13th 08, 12:54 PM posted to uk.transport.london
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Default LEDs on the front of Picc trains.

Thanks for the quick answers...

I cannot see a camera lens in there - I had thought of that purpose.

As for the detrainment, possible but seems unlikely. It is two high
(top most part of the window) and I would have expected a halogen it
is was for emergency.
There is some stock, district line I think, which has a small 50w(?)
halogen in a clear bubble pointing down. This would illuminate the
step out the from of the cab.
The one on the pic would do a good job of lighting the roof


Cheers,
Crispin
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Old March 13th 08, 01:24 PM posted to uk.transport.london
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Default LEDs on the front of Picc trains.

On Mar 13, 1:54 pm, wrote:
Thanks for the quick answers...

I cannot see a camera lens in there - I had thought of that purpose.

As for the detrainment, possible but seems unlikely. It is two high
(top most part of the window) and I would have expected a halogen it
is was for emergency.
There is some stock, district line I think, which has a small 50w(?)
halogen in a clear bubble pointing down. This would illuminate the
step out the from of the cab.
The one on the pic would do a good job of lighting the roof

Cheers,
Crispin


Oh I see what you mean now!

I did find out what it was once, but I've forgotten!


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Old March 13th 08, 05:41 PM posted to uk.transport.london
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Default LEDs on the front of Picc trains.


wrote in message
...
Hi Folks,

I've noticed on the front right window (if you are in the cab) there
it a "thing" pointing forward with a lot of clear LEDs in it. It's
located slightly below where the windscreen wiper motor is.

I have asked a couple drivers and they either won't tell me or claim
they don't know.

They are all clear LEDs. Could it be some IR LEDs / sensors?
Collision / proximity detection perhaps?

I was just curious but now that the drivers don't know, it's made it
worse


TIA

Cheers,
C rispin


Its a "calling on light" it illuminates to tell the driver of the train
behind, that the train is in trouble of some kind, and will call the train
behind forward to assist. Once that light is on, the assisting driver is
assured that the train will not move.

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Old March 13th 08, 09:42 PM posted to uk.transport.london
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Posts: n/a
Default LEDs on the front of Picc trains.


"Sargeant Rutter" wrote in message
...

wrote in message
...
Hi Folks,

I've noticed on the front right window (if you are in the cab) there
it a "thing" pointing forward with a lot of clear LEDs in it. It's
located slightly below where the windscreen wiper motor is.

I have asked a couple drivers and they either won't tell me or claim
they don't know.

They are all clear LEDs. Could it be some IR LEDs / sensors?
Collision / proximity detection perhaps?

I was just curious but now that the drivers don't know, it's made it
worse


TIA

Cheers,
C rispin


Its a "calling on light" it illuminates to tell the driver of the train
behind, that the train is in trouble of some kind, and will call the train
behind forward to assist. Once that light is on, the assisting driver is
assured that the train will not move.


The light over the door is to assist with detraining in emergency.

But I thought that the light in the window is to indicate that the handbrake
is applied.


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Old March 14th 08, 07:40 AM posted to uk.transport.london
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Default LEDs on the front of Picc trains.


wrote in message
.uk...

"Sargeant Rutter" wrote in message
...

wrote in message
...
Hi Folks,

I've noticed on the front right window (if you are in the cab) there
it a "thing" pointing forward with a lot of clear LEDs in it. It's
located slightly below where the windscreen wiper motor is.

I have asked a couple drivers and they either won't tell me or claim
they don't know.

They are all clear LEDs. Could it be some IR LEDs / sensors?
Collision / proximity detection perhaps?

I was just curious but now that the drivers don't know, it's made it
worse


TIA

Cheers,
C rispin


Its a "calling on light" it illuminates to tell the driver of the train
behind, that the train is in trouble of some kind, and will call the
train behind forward to assist. Once that light is on, the assisting
driver is assured that the train will not move.


The light over the door is to assist with detraining in emergency.

But I thought that the light in the window is to indicate that the
handbrake is applied.

In a word yes. The driver has to remove his key from the deadmans handle
lock and place in a lock to activate this light. While this key is not in
the DMH the hand brakes WILL be on.
HTH

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Old March 14th 08, 07:55 AM posted to uk.transport.london
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Default LEDs on the front of Picc trains.

In message , Sargeant Rutter writes

Its a "calling on light" it illuminates to tell the driver of the train
behind, that the train is in trouble of some kind, and will call the
train behind forward to assist. Once that light is on, the assisting
driver is assured that the train will not move.


No, that's the orange light above the window.

I did know what the other light was for (as it is a light) but as we
never use it, I've forgotten, like chunky monkey.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
(please use the reply to address for email)
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