5 ms·
Maintenance, perhaps? For the London Underground at least, the power is switched off after the trains stop running (4th rail) so workers can safely go onto the
by Liftyee 2y ago
Maintenance, perhaps? For the London Underground at least, the power is switched off after the trains stop running (4th rail) so workers can safely go onto the tracks.
Also, it would almost definitely run at a loss (excluding externalities)... same reason why many Chinese cities' subsidised metros close quite early. Agreed that it's probably beneficial in the big picture but maybe hard to justify to superiors?
- singleshot_ 2y agoMay I ask what the third rail is for in your neck of the woods?
- itcrowd 2y agohttps://en.m.wiktionary.org/wiki/fourth_rail https://en.m.wiktionary.org/wiki/fourth_rail
- jffry 2y agoIt seems the London Underground uses a four-rail system http://www.trainweb.org/tubeprune/tractioncurr.htm http://www.trainweb.org/tubeprune/tractioncurr.htm
- daedrdev 2y agohttps://en.wikipedia.org/wiki/Railway_electrification#Fourth_rail https://en.wikipedia.org/wiki/Railway_electrification#Fourth...