Platform Screen Doors

well there are big problems with that even thought I think its a good idea, anyway well we already have them on most of the JLE
MONEY it will cost LOADS for the tax payer and the government will definatley say NO.
platforms are not always big enough
loads of different types will have to be made for different tube stock
mind you I think we could have a few, if we did then mile end would be my first choice, I am so scared of that place I will just walk to stratford and get on the NLL london bridge does have quite a few aswell
but what I propose and I dont know why LUL didnt think of this

remove the center rail at the beggining of station and make suicide pits alot deeper but with out damaging structrall stuff
unfortunatley suicide cant always be helped so we cant really STOP it for good but we can have a try.

EDIT if we do have peds then they should be availible at every station beacause the ventilation system will be pointless

The people of Japan are a bit better behaved than some of the people who use the system at night in London. The yobbo's will sit or climb on these. The only safe option is full size PEDs like the JLE has.

I believe there is also an issue with the size of some of the platforms making it impossible to manage? You pretty much need a platform designed for them, I think. I'm not positive, though.

the westminster platforms on the jle east and westbound are curved to a certain degree.
tho its a bloody pain when were trying to do sats on them because you cant see the train properly because of the customers crowding round doors and itsh ard for us to see the repeater because thats on the wall unit at the headwall.

Hmmm, those doors seemed a little too tall for feasible climbing but I guess yobbos can do all sorts of things. I am aware of the JLE, the full platform screen doors and how the stations are properly ventilated!

From my experience both types of doors, they are no thicker than the (ridiculously tiny) space between the edge of the platform and the yellow line of LUL and actually serve to "widen" platforms as people are no longer fearful of waiting by the edge.

That line in the video was opened in the early 50s but the doors were installed only in 2007. I do not know if they'd handle Bank, Central Line but I've seen both full and partial doors on slight curvatures.

One end of the Marunouchi line terminus seems to operate fine with just 2 platforms! Although there have always been a few stations with 3 platforms like North Greenwich to handle short reversing without blocking the line.

Is it me or have all deep line tube stock had door locations at the same places since the 1938TS? With the S-stock coming in, the door locations will be standardised.

It seems to me that a major problem with platform doors is that all future stock must have its doors in the same places. This could limit innovation in design.

del, what's your problem with Mile End, I can think of worse places in the past e.g. the Claphams, Euston and Angel island platforms and Liverpool St. inner rail in the morning rush hour when Mets terminated the third platform back in the 1970s.

pacific, in the old days passengers were not afraid to stand near the platform edges but society wasn't full of yobbos and idiots then, sometimes in the rush hour the only way to get from one end of a platform to the other was by walking tightly to the white line, I frequently did it in the days before yellow lines and the 600mm 'line clear' area because the average passenger is a creature of habit and wants to board from the same point every day often leaving platforms congested in one or two areas and quite empty elsewhere.

As others have said retrofitting PEDs is not viable due to the geography and structure of many tube platforms although I really don't believe that curvature is a great issue with cameras fully covering the platforms. In order to fit them at tube sites I believe the ventilation systems would have to be completely rethought and that is expensive. The lighting would probably also have to be relocated and other equipment relocated and their are issues with signal cabling at many sites too.

The alternative to PEDs is good platrfrom management and LT/LU has managed that task admirably for 75 years. Sadly there will always be accidents but accidental 'one unders' are rare in comparison to the average one 'one under' per day across the network as I understand it. The potential for suicide exists everywhere and the Underground will never be exempt as a determined individual will always find a way. Of course mitigation has its limits and it is impossible to eliminate suicide attempts completely.
Removing the negative rail through the platform is perhaps feasible by returning the traction supply through the running rails in the platform area but that would involve expensive resignalling work as the track circuitry would have to be altered to accommodate it. However, I believe a risk assessment would show that the cost could not be justified as it would be disproportionate especially as the argument for removing the negative rail probably revolves around mitigating the danger from a physical impact rather than electrocution.
As someone who has experienced first hand 'diving' head first onto the negative rail in a platform area I can say that landing on the negative rail is a bruising and painful experience. In my case it was an accident, I was on duty on the nightshift running cables during the resignalling of the old Bakerloo line ready for its transfer to the Jubilee and slipped on a patch of grease on platform 9 at Baker Street and the next thing I knew I was picking myself up and hobbling off up the tunnel to St. John's Wood toute suite to catch up my colleagues and cover my embarassment. Of course the traction was off but I don't think I would've been much worse off if it had been on, I was black and blue from my collar bone to my ankle for the next fortnight having landed lengthwise at full stretch on the neggy before dropping off it.

Deeper suicide pits may not be the good idea that some may think and could result in further injury and not necessarily of the physical variety, one can't help thinking of those at Finsbury Park for instance where falling into the pit carries all the risks of swimming in a stagnant pool or at least it used to!

One of the Westminster platforms is curved slightly if you look from one end of the platform to the other you can see this quite clearly.

I believe it is the only curved PED platform

Interesting discussion nonetheless and seems a shame even partial doors seem unsuitable. I was at Liverpool Street inner rail and a guy was walking along the platform edge as the train was pulling in. I half expected a blast on the whistle but he went back in. Was very close to getting his shoulder whacked! One effect of these platform doors however is that, the cattle will stand right by them, instead of 600mm away.

Watson, the curvature of those stations in Hong Kong is nothing compared with this:


Come to think of it, I need to record a 92TS coming into Bank Eastbound someday...

Edit by Colin: I've changed the link to show the image, as clicking the link brought up an 'access forbidden' page.

Well, I was just trying to explain why the staff here were sceptical. Yes, it is possible but a far greater challenge.