London time current Videos

+XenosTube The central fourth rail is used as a return rail for traction current. This was necessary when the system was built to prevent current leakage from damaging the iron tunnel linings through electrolytic damage. While newer technologies allow for weight carrying running rails to be properly insulated, doing so would require new chairs on the rails. Before the middle rail could be used as a positive conductor, all running rails would have to be properly insulated and grounded, a time consuming process.

+XenosTube We are quite slow in the uK though, for example the idea of an east-west underground was first mooted in the 19th century and yet it is only expected to open in 2019 - over a hundred years late.

+splodge The conversion to a covered bottom contact conductur rail as described above could be done in a time period of 9 to 10 years before the new rolling stock arrives. You'd need to modify power substations and the existing trains to collect power from the middle conductor rail only for temporary use and return power through the running rails. This allows a slow and non-disruptive replacement of the side conductor rail, which then will be the power source for the new rolling stock in the mid 2020s. By the time you withdraw the older rolling stock, you could gradually remove the middle conductor rail. If this saves a few hundred lives over the next decades, it will be a couple thousand pounds for each.

+splodge Well, at least there are plans. Although an overhead wire is hard to imagine since there is only a few inches space between the train and the tunnel ceiling. It also would impact the look and feel of the tube. Overhead wires seem to be quite unusual for underground trains.

+XenosTube There are tentative plans to replace it with overhead, but given the fact that tube network has 3 million passengers a day it will be very difficult and costly to replace it whilst still running a service. But ultimately third rail will have to go.

+cjmillsnun Well, they haven't upgraded yet for obvious reasons as you mentioned. You can't compare electrical safety standards of the early 20th century with today's standards. If we hadn't upgraded the electricity in our homes like protective earth wires, this wouldn't have been acceptable for us. Quite a few people have died due to electrocution. You can't avoid cost, but if you don't do it now, you'll probably never do it, since this is an avoidable risk and even staff members have had accidents. They can take the opportunity before the new rolling stock arrives. But I think there is a solution which can avoid disruption while upgrading the tube's conductor rails. This is how:Preparation of conversion:Make use of the fact, that there are two conductor rails. Apply all the power to the second conductor rail in the middle of the track and use the running rails as the return conductor. The modification of the trains might be quite simple. Then remove all contact shoes on the side of the train. Provide a fleet of modified trains for one line in conversion to avoid any disruption of service. Conversion:Change the first conductor rail on the side to a covered bottom contact conductor rail. Then provide the trains with new contact shoes at the side. Once this is done, change power to the new conductor rail and remove the old one in the middle. There is still a problem sharing tracks with network rail. A temporary solution might be to provide a few trains with switchable and retractable contact shoes to use both systems or just let passengers change trains. If the network rail is converted to overhead wiring, you can have both a covered conductor rail and overhead wires on shared sections. Converting to overhead wiring doesn't cause disruption as you remove or change the conductor rail after conversion.

+XenosTube 1. Cost. It would cost tens of millions to upgrade all of the trains and lines. LUL is owned by TfL who are a government organisation directly accountable to the Mayor of London. So the money to do this would come out of either council tax or the fare box. Neither is acceptable.2. Disruption. You would have to close off whole lines, or split fleets and have partial closures whilst the upgrade is in progress. It would take years and the disruption to services would be something that would cost the economy millions. This is compounded on lines that share tracts (District, Metropolitan, Circle and Piccadilly)3. Compatibility. LUL share some lines with Network Rail and Vice Versa. Network Rail are not about to change either because of 1. and 2. (Network Rail is directly accountable to the Department for Transport)4. The risk is mitigated by training. Part of the safety course for LUL and Network Rail covers conductor rails. If passengers have to be detrained between stations, the juice is turned off. The main danger is to trespassers. They shouldn't be there in the first place, and to be honest more trespassers die from being hit by several tonnes of moving train than from electrocution

.... (cont.) apparently this was up in Glasgow!

+ashita100 Yes they are.

oh LOLLLO

What?

+CrazyCashGaming OOOH GET YOU!!!! i bet you wear a special helmet!!!

+jeremy western Shut the fuck up you racist bastard.

+Andison Iu YOU WAN FLIED LICE???? moochy moochy

630 volts...70 times your battery. Yeah, I think you'll like licking the conductor rails.

+jeremy western It will tingle considerably...

genie total et absolu pour les mille ans a venir !

Woah that riff from Black Sabbath :D

Hail Satan !!! Gorgeous !!!

Art

+MC marat if you listen this song it make you feel better! be strong

+jessica labelle What if I have every day shit

+Kate Flynn Great any-day song ;P

+nefeli Sofou Γειά σου Νεφέλη! ! Καλο σαββα/κο!!!!!

+μερσινα κωνσταντελια​ επισης Μερσινα! !Καλο μεσημέρι! !!!

Καλημέρα με υγεία !!!!!

Καλημερα γιαννη μου καλο σαββστοκυριακο σου ευχομε...

+Mona the soulful You make me smile.... ;))) Thank you....♡

+Serge p. LOLLLLLLLLLLLLLLLL

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Which pleasure to drive with your beautiful and soft sharing songs..... An impression to feel you here..... ♥

+Tee J M. Yes, I do Love You

+Mona the soulfulYou read my mind And ...you knowI LOVE YOU

+Tee J M. yes! YES & YESI DO MISSYOU

Oh Yes , Yes ! +Mona the soulful*******

+Reda Amour bonjour chèr Reda. Doux bisous matinaux pour te souhaiter le bonjour

+KittenWhisperer Master2 E.x.a.c.t.l.y... to let you enjoy its warmth surrounding you

+Virginie A. Bonjour ma Virginie adorée. Je pense à toi.... je te souhaite une très bonne journée. Doux bisous du coeur ♥♥♥♥♥♥

+Franck Pregnon merci Franck! Bonjour

+George Gwolf good morning kiss ... my dear George. A bright day filled with the warm touch of sweet memories and caresses for your soul. May you have a successful day

Exactly... Softly enticing you Until you are caught and hooked

+KittenWhisperer Master2 yes ... this voice is like a caress for your soul ...

London grammar, awesome

Beautiful night my dear Mona! ☺ I wish you a very pleasant and restful night, with wondeful dreams, hopes and sweet memories to be with your soul, until the beautiful morning ! Good night Kiss. ..

Bonne nuit

Fantastic mate! Longing for the new album! lol, Px

Ive seen some shit in my my time but wtf? is this?

It is beauty. You all inspire. Otti ( Hastings) x

''i looked to the south side of the door''

Reminds of Horse - awesome!

Very nice!!