4 ms·

Then from what the pollution in the subway come from ?

• philjohn 2y ago
  most subway trains are decades old - newer fleets have regenerative braking[1] But also ... almost a century of brake dust because nobody is going through and vacuuming the tunnels. [1] https://tfl.gov.uk/corporate/transparency/freedom-of-information/foi-request-detail?referenceId=FOI-3010-2223 https://tfl.gov.uk/corporate/transparency/freedom-of-informa...
  • cogman10 2y ago
    Interesting. Looks like it the line isn't able to take the energy (I'm guessing voltage is already too high) they dump the energy into a resistive heater. Makes sense, it's just going to be heat anyways. I wonder how often that happens vs the energy getting dumped into the line.
• inglor_cz 2y ago
  Depends on where you live. There is barely any pollution in Prague metro.