Do Leaning on Doors make the train slower?

[Simon Poole]

I was on my way to London St Pancras/Kings Cross, can't remember which tube line it was on but after leaving Euston Square Tube Station before London St Pancras/Kings Cross, the tube train departed slowly and a announcment was made, please do not lean on the doors or we won't make it to Pancras/Kings Cross, seconds later the tube train began to move faster and an thank you was announced

Just wondering that if you mean heavilly on a tube train door does it make it slower?

 

[Pumbaa]

Yes. They also require you run very fast on the spot a la the flintstones to get any decent speed up.

Joking aside, I haven't the foggiest what you heard, but you probably misheard an announcement. If there is a special tube issue with the doors though, I hope someone can shed some light.

 

[ralphchadkirk]

Possibly leaning on the doors kept momentarily knocking the interlock out? Not familiar with the processes on tube stock though.

 

[N Levers]

Leaning on Bakerloo line doors in particular can cause the train brakes to apply...

 

[Pumbaa]

If that's the case Id imagine that the stock Simon was on was either C or A stock. But thanks for that gem - very interesting.

Come to think of it, I'm sure on the C stock the operators can open the doors while the train is still moving.

 

[ralphchadkirk]

If that's the case Id imagine that the stock Simon was on was either C or A stock. But thanks for that gem - very interesting.

Come to think of it, I'm sure on the C stock the operators can open the doors while the train is still moving.

As I said, I'm really not sure about it. It's the only thing that sprung to mind that would fit in really!

 

[150222]

If that's the case Id imagine that the stock Simon was on was either C or A stock. But thanks for that gem - very interesting.

Come to think of it, I'm sure on the C stock the operators can open the doors while the train is still moving.

The passenger doors on c-stock can be opened when the train is going at less than 5 mph. The cab doors are not interlocked.

 

[Mojo]

Not aware of any specific issues on Bakerloo line, but 1992 stock on the Central line has the biggest issues. It is not so much leaning on the doors, but if you lean on the doors, when the train accelerates it causes you to move one way, thus unintentionally forcing the door open.

 

[trentside]

Possibly leaning on the doors kept momentarily knocking the interlock out? Not familiar with the processes on tube stock though.

That's what was likely happening. All LU stocks are equipped with an interlock, on the older trains (not sure about newer stocks) this is visually indicated to the driver by a blue pilot light in the cab. If there is no light, motoring is cut out.

 

[Peter Mugridge]

Couldn't have been the new S Stock could it? That has quite sensitive doors and very little seating relative to standing space.

 

[tsr]

I use the Victoria line the most of all of the LU lines, and the situation the OP describes is incredibly common on the trains on there. The train motor indeed cuts out if anyone pushes the doors. It's virtually always a mistake on the passenger's behalf, and overcrowding can cause issues. The announcement that "these newer trains will not leave the platform unless you do not lean on the doors" is made countless times both on trains and platforms during busy periods.

I believe, but I'm not sure, that the S Stock is built in such a way that this problem should not occur.

 

[Simon Poole]

Thinking about it, it could had been the 2009 stock, if not would be the C Stock, it wasn''t A Stock or S Stock becuase they were having problems from Aldgate to Baker Street on the Met,

honestly i might had misheard becuase i can't remember the whole woord for word on the tannoy system

But i think it was more of the Victoria Line 2009 Stock but i can't remember

 

[trentside]

The 2009 Stock is not helped by the 'Sesitive Edges' on the doors which detect obstructions, re-open and close just the affected door. In practice this is supposed to prevent the train operator having to release and re-close the doors on the whole train while extra people try to quickly board. This should only be necessary (in practice) when the sensitive edges comtinue to detect an obstruction (it gives up after 3 attempts).

Problems have arisen with this system being overly sensitive and when people attempt to hold open the door which is attempting the re-close procedure.

 

[Peter Mugridge]

It wouldn't be 2009 stock from the stated Euston Square to King's Cross though - although it could be from Euston to King's Cross.

 

[WinterChief]

Just to clarify, leaning on the doors does cause the motors to cut out, meaning the train will coast on the majority of LUL stocks.

Obstacle Detection and Sensitive Edge are different. Obstacle detection reopens the door 3 times. Sensitive edge only kicks in when the doors are closed and locked and something like a strap is caught. When the strap is pulled it applies the brakes.

 

[trentside]

Obstacle Detection and Sensitive Edge are different. Obstacle detection reopens the door 3 times. Sensitive edge only kicks in when the doors are closed and locked and something like a strap is caught. When the strap is pulled it applies the brakes.

Ah right, the way it had been described to me previously made it sound like the Sensitive Edge was the only system at work.

 

[Simon Poole]

It wouldn't be 2009 stock from the stated Euston Square to King's Cross though - although it could be from Euston to King's Cross.

Honestly i was traveling around to London St Pancras/Kings Cross more than once that day, i'm not sure if it was Euston Square or Euston, all i can remember is that the announcement was put out before St Pancras or London Kings Cross but i'm thinking it not Euston Sqaure and it's Euston on the Victoria Line while heading to Highbury & Islington

 

[Peter Mugridge]

Ah, then that's definitely 2009 stock, which is known to have door sensitivity issues on both counts.

 

[Dstock7080]

Ah, then that's definitely 2009 stock, which is known to have door sensitivity issues on both counts.

So do S Stock from Euston Square to King's Cross St. Pancras.
--- old post above --- --- new post below ---

The passenger doors on c-stock can be opened when the train is going at less than 5 mph. The cab doors are not interlocked.

C Stock doors can only be opened below 5MPH when inside the CSDE loop at stations.

The cab doors are interlocked but it is common (and agreed practice) to over-ride the interlocks.

 

[12CSVT]

Leaning on Bakerloo line doors in particular can cause the train brakes to apply...

Precisely that happened on a southbound Jubilee Line train on Tuesday during the evening peak. I know because I was on it. Several standing passengers were thrown foreward.

 

[Dstock7080]

Leaning on Bakerloo line doors in particular can cause the train brakes to apply...

Leaning on the doors of Bakerloo Line (1972 Stock) does not cause the brakes to apply. It would break the door interlock circuit which also causes the motors stop accelerating, if pulling out of a station this would cause a rough jolt. This usually returns the interlocks to normal.
If the 'pilot-light' has not returned, the brakes should then be applied by the Operator.

 

[tsr]

Leaning on the doors of Bakerloo Line (1972 Stock) does not cause the brakes to apply. It would break the door interlock circuit which also causes the motors stop accelerating, if pulling out of a station this would cause a rough jolt. This usually returns the interlocks to normal.
If the 'pilot-light' has not returned, the brakes should then be applied by the Operator.

That sounds familiar to me, even as an infrequent passenger on the Bakerloo.