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Post by Dmitri on Oct 6, 2010 15:33:21 GMT
If there are only enough trains to provide a 20 minute interval service on the bit of line that's open say "Very limited service between X and Y". Here in Moscow, we call it 'increased intervals'. Means that trains are not as frequent as usual, so you'll unlikely get inside .
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Post by Dmitri on Aug 17, 2010 12:19:28 GMT
According to the Russian metro signalling rules, blue signal means the following:
- for an ATS-capable train - proceed not faster than permitted by the in-cab indicator; - if an ATS is not present (or out of order), stop and request colour signals to be lit.
Red light always means "Stop".
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Post by Dmitri on Jul 20, 2010 13:45:07 GMT
If you use your body to complete a circuit, then there will be a current, the size of which is governed by the electrical resistance that the body provides ...which is an interesting thing indeed . Whilst body resistance may seem high (up to 100 kOhm) when metered with a 4.5-9 V powered multimeter, the only part of a human body possessing significant resistance is a very thin outer skin layer. Its breakdown voltage varies from person to person, but it surely is not higher than 100 V, and when a breakdown voltage is reached, body resistance drops significantly. Currents over 300 mA DC and 100 mA AC (50 Hz) are considered to be fatal, although your mileage may vary ;D.
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Post by Dmitri on Jul 20, 2010 13:14:35 GMT
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Post by Dmitri on Jul 6, 2010 20:05:03 GMT
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Post by Dmitri on May 17, 2010 10:32:26 GMT
1. Moscow appears to have helpful diversionary routes, so work can be carried out without the need to close a line. TBH I don't understand which ones you mean ( Track map).
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Post by Dmitri on May 17, 2010 9:12:30 GMT
1. How long they are shut down overnight (i.e. last and first train times) Last trains start from each terminus at 1:03 (station entrance closes at 1:00, and you have 3 minute allowance to get to your train). On longer lines, it takes almost an hour to reach another terminus. 2. What sort of margins they allow themselves for getting everyone off the track before first trains to help ensure those trains run on time Track work starts at 2:00 and finishes at 5:00. 3. How much things actually cost. It's all very well to say they get less revenue than Tfl, but maybe it costs less to do certain jobs. For example how much are their employees paid to work (presumably worked very hard) overnight. The exchange rate is often casually overlooked in such items. No idea, but I think much less than in London . 4. How much they actually get done each night. Does it, for example, take a fortnight of "overnight" work to replace a relatively short piece of track, or are they indeed replacing huge complex track layouts within a matter of hours. Again, no idea, but I think truth is somewhere between. Anyhow, enough is done to make things work. From the article, it was also unclear to me whether they also have extended engineering hours at weekends. No. Wikipedia says that the Metro is much less busy at weekends. Correct but irrelevant . which suggests that sections of lines are closed during engineering works It is so rare that I cannot instantly recollect when it happened last time ;D. Given that, what exactly is being done in the likes of Moscow? Everything. And the last but not least: Mr Gayev says Moscow cannot afford such closures, so all works have to be done at night If you think it is an exaggeration... no, it is not, it is sad truth.
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Post by Dmitri on Mar 14, 2010 16:38:54 GMT
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Post by Dmitri on Mar 10, 2010 22:03:17 GMT
For those who can speak metric, LU rolling stock dimensions are here. Note that D is 2 metres longer than A.
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Post by Dmitri on Feb 1, 2010 12:58:13 GMT
Most of the uploading sites do have a facility to reduce picture sizes, and while we are aware that this can greatly reduce the quality (and in this instance render them almost useless) we would ask that people consider this option as well. I'd suggest replacing a full-size picture with a clickable link to it, e.g.: Click here for a big picture (149 kB).
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Post by Dmitri on Dec 28, 2009 13:19:32 GMT
Modern LEDs can be very bright... as for me, I would have added a resistor in series with the LED to decrease current flowing through one.
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Post by Dmitri on Dec 23, 2009 9:57:06 GMT
it got down to -26 one night -26 F ? We had it down to ca. -30 C in mid-January, 2006. There were much less than usual cars on the streets .
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Post by Dmitri on Dec 20, 2009 13:30:22 GMT
Some 3 years ago we had discussion on it - click here to view.
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Post by Dmitri on Dec 7, 2009 12:22:35 GMT
Similar vehicles, known colloquially as 'mad stools', are used in Russia to drive over the abandoned narrow-gauge railway lines, although they have petrol engines, not electric ones. Photo1, photo2, video.
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Post by Dmitri on Sept 11, 2009 17:20:55 GMT
IIRC the problem with the tunnel was that the only buses which could fit through were normal - not low floor. I recall the following train of thought: due to the current safety regulations, full size DD buses cannot use Rotherhithe tunnel anymore. And, due to the DDA, buses have to be accessible. The only compliant rolling stock available were small minibuses (MB Sprinter or suchlike) which were not deemed as a suitable replacement for the ELL trains.
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Post by Dmitri on Jul 16, 2009 12:44:58 GMT
The 313s are ghastly; I hate low back seating, and the trains are very spartan At least, you do not have to enjoy plywood benches .
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Post by Dmitri on Jun 28, 2009 9:36:19 GMT
They should scale it down to tube line - something like Heathrow to Stratford/Woowich. I do not think a brand new tube gauge line is a good idea. SSL gauge... why not?
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Post by Dmitri on May 29, 2009 11:52:42 GMT
Some notes in the end. Shot was taken from here. I am looking south, Stalin's cottage (one of them is behind me. For those who are interesed, entire photoset is here. Well the Georgian government would probably say it's in Georgia, but the locals might say something different. Complete giveway. At least, for me .
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Post by Dmitri on May 29, 2009 11:36:39 GMT
Regardless of what else in the World is happening, tube staff productivity is increasing, targets are being exceeded and more trains than ever before are being run. So a pay cut in real terms is not a fair offer. For clarification, the offer on the table (and this is the improved version) is: RPI+1% in the first year (2009 - 2010) and RPI+0.5% for a further four years (2010 - 2014). There are no other changes to conditions. The relevant RPI for year one is 0%, so that's a pay increase this year of 1% and no real guarantees for the next four years, up to 2014. To make you feel better... The system I develop and supervise works great, handling significantly increased load faster than year ago on the same hardware. Nevertheless I had to swallow a 15% pay cut. On the bright side, no more pay cuts are expected. However, no salary increases are expected either, in spite of significant inflation.
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Post by Dmitri on May 25, 2009 19:02:45 GMT
Since the interval is that timetabled for the day "good service" is correctly stated.) I feel it was be equally inappropriate for "minor delays" to be posted as the descripton when the service is running to book. It would give an inappropriate bad impression. We have 'increased intervals' type of announcement - I think it is more appropriate here.
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Post by Dmitri on May 24, 2009 14:37:02 GMT
I use FF 3.0.10, and I've never experienced troubles you mention. I never log out, however.
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Post by Dmitri on May 22, 2009 10:37:41 GMT
You're struggling to give us a clue Sometimes, it is difficult to give a clue without giving away an answer .
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Post by Dmitri on May 21, 2009 14:41:24 GMT
That's a beast and a half! I somehow doubt it would fit down the streets here It is not very wide, it is more to the way the photo was taken (more contemporary example from Krasnodar is here). It doesn't have to be like that (or it didn't). Years ago I had a Bristol FLF (decker) with a burnt out clutch and they hauled it out of Stroud centre with a LAND ROVER!! Not fast but very effective. It sometimes has to tow a 20 odd ton bus over the slippery road, so additional power and grip is much appreciated .
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Post by Dmitri on May 19, 2009 20:18:19 GMT
Why are the same buses repeatedly off the road for one thing or another? They are unlucky... or simply run down... The contracted recovery team can take anything up to FIVE hours to get out to us, I know from freezing experience! Moscow bus (and trolleybus) depots have their own tow trucks, like that one.
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Post by Dmitri on May 19, 2009 13:42:40 GMT
If a few of these students fell out of a packed Vic line train and got killed Does it happen often enough to be afraid of ?
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Post by Dmitri on May 13, 2009 11:36:02 GMT
I on the other hand am concerned that I might be struck down after exposure in the mid-1970s whilst working in an old asbestos-roofed railway building. I think you are safe unless you regularly inhaled asbestos dust.
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Post by Dmitri on Apr 29, 2009 9:24:31 GMT
How can a publicly owned asset go insolvent? It can - when income does not cover expenses and local budget does not have money to cover the difference. In Russia, several tram/trolleybus/bus depots were closed and sold off that way.
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Post by Dmitri on Apr 15, 2009 12:22:51 GMT
Things get more complicated if you are passing through intermediate barriers, arriving at Waterloo on teh W&C and interchanging to a different LU line, interchanging between tram and tube or national rail at Wimbledon, interchangin between Overground and Underground at Euston or making an outerchange. I don't have time (before I fall asleep) to write these out. I'm really glad I do not have to deal with all that . I tell them to wait until the person in front has gone through and the gates FULLY close before slapping the card on the reader Are there any signals on the gates? In Moscow, you can safely touch in after the light on the gate changes from green to red.
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Post by Dmitri on Mar 29, 2009 21:15:34 GMT
I'd look for a solenoid operating circuit - the current characteristics are completly different from LEDs 555's output can source or sink up to 200mA, and you can add a transistor if it is not enough. And what are voltage and current requirements for a point motor/solenoid?
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Post by Dmitri on Mar 25, 2009 11:31:40 GMT
Worst of all are reckless bus drivers - a special pet hate of mine.
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