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| Re: Moscow metro trains per hour (49891) | |||
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Re: Moscow metro trains per hour |
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Posted by stephenk on Sat Feb 12 05:40:17 2005, in response to Moscow metro trains per hour, posted by Kotiara on Fri Feb 11 15:28:19 2005. As well as the quite advanced automatic block signalling that the Moscow Metro uses, the other most important factor in running 40tph is the huge reversing capacity of the termini. At the termini the trains are double ended (i.e a driver at both ends), allowing a train to travel from the arrival platform to the departure platform via the turnback track in just over 60secs. Only one turnback track is usually needed, but two are usually provided for times of service problems. There are also tracks flanking the turnback tracks, allowing for future line extensions, but also as an overrun track, allowing trains to run in close behind the train entering the turnback tracks.There are similar arrangements at all ex-termini on the line, and a few other sites. This allows a high reversing capacity even at the rare times of service disruption. The simple end to end running of the Moscow metro also helps in keeping up the high tph, as there are no junction conflicts to worry about. Moscovites also tend not to obstruct closing doors (they are happy to wait 90secs for the next train), and they also don't tend to try and board trains heading into the turnback. (These unfortunately both tend to occur quite often on many Western metro systems!) Thus the station dwell times are often little more than 20secs, helping to allow for 40tph running. |
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