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> The pipes ran through the sewers of the city, and the tunnels of the Metro and the RER, a commuter rail network serving Paris and its suburbs. > However, th

> The pipes ran through the sewers of the city, and the tunnels of the Metro and the RER, a commuter rail network serving Paris and its suburbs. > However, the system was repaired and pneumatic clocks continued to work until 1927. Considering that the RER started to operate in 1977 [0], I find that hard to believe. [0]: https://en.wikipedia.org/wiki/R%C3%A9seau_Express_R%C3%A9gional https://en.wikipedia.org/wiki/R%C3%A9seau_Express_R%C3%A9gio...

bombcar 4y ago
None of the RER tunnels are shared/repurposed?
- gregschlom 4y ago
  No that's definitely a mistake in the article. Not only are the RER tunnels from the 70s, they also run much deeper than the metro tunnels. They didn't exist in any form at the time. The metro tunnels did, though
  - bobthepanda 4y ago
    It’s possible that on construction of RER that previously separated pneumatic lines were then routed through the RER tunnels as well, no? I know in NYC that water pipes and electric tend to get routed through/around subway tunnels once constructed.
  - kweks 4y ago
    The RER integrates converted sections of existing tunnels, IE the RER B: The northern terminus of the Ligne de Sceaux opened at Luxembourg in 1895. Between 1973 and 1977 it was converted into RER B. ( https://en.m.wikipedia.org/wiki/Luxembourg_station_(Paris) https://en.m.wikipedia.org/wiki/Luxembourg_station_(Paris) )
- rob74 4y ago
  The Wikipedia article https://en.wikipedia.org/wiki/R%C3%A9seau_Express_R%C3%A9gional https://en.wikipedia.org/wiki/R%C3%A9seau_Express_R%C3%A9gio... doesn't sound like it: > The RER's tunnels have unusually large cross-sections. This is due to a 1961 decision to build according to a standard set by the Union Internationale des Chemins de Fer, with space for overhead catenary power supply to trains. Single-track tunnels measure 6.30 m across and double-track tunnels up to 8.70 m, meaning a cross-sectional area of up to 50 square metres, larger than that of the stations on many comparable underground rail networks. Paris has basically three distinct stages in "urban rail" development: - first, the mainlines were built from stations on the then-outskirts of Paris (Gare du Nord, Gare de L'Est etc.) - then trams and later metros were built to link these train stations to the city and serve additional areas. - finally starting from the 1970s they started building rail tunnels so suburban trains could run directly from one train station through the city to another station - similar to the S-Bahn systems in Germany or Crossrail in London. The RER tunnels were all built in this phase.
baud147258 4y ago
maybe when using RER, the author meant the short-distance train lines that already existed before the RER network was built up?

bombcar 4y ago

None of the RER tunnels are shared/repurposed?

gregschlom 4y ago
No that's definitely a mistake in the article. Not only are the RER tunnels from the 70s, they also run much deeper than the metro tunnels. They didn't exist in any form at the time. The metro tunnels did, though
- bobthepanda 4y ago
  It’s possible that on construction of RER that previously separated pneumatic lines were then routed through the RER tunnels as well, no? I know in NYC that water pipes and electric tend to get routed through/around subway tunnels once constructed.
- kweks 4y ago
  The RER integrates converted sections of existing tunnels, IE the RER B: The northern terminus of the Ligne de Sceaux opened at Luxembourg in 1895. Between 1973 and 1977 it was converted into RER B. ( https://en.m.wikipedia.org/wiki/Luxembourg_station_(Paris) https://en.m.wikipedia.org/wiki/Luxembourg_station_(Paris) )
rob74 4y ago
The Wikipedia article https://en.wikipedia.org/wiki/R%C3%A9seau_Express_R%C3%A9gional https://en.wikipedia.org/wiki/R%C3%A9seau_Express_R%C3%A9gio... doesn't sound like it: > The RER's tunnels have unusually large cross-sections. This is due to a 1961 decision to build according to a standard set by the Union Internationale des Chemins de Fer, with space for overhead catenary power supply to trains. Single-track tunnels measure 6.30 m across and double-track tunnels up to 8.70 m, meaning a cross-sectional area of up to 50 square metres, larger than that of the stations on many comparable underground rail networks. Paris has basically three distinct stages in "urban rail" development: - first, the mainlines were built from stations on the then-outskirts of Paris (Gare du Nord, Gare de L'Est etc.) - then trams and later metros were built to link these train stations to the city and serve additional areas. - finally starting from the 1970s they started building rail tunnels so suburban trains could run directly from one train station through the city to another station - similar to the S-Bahn systems in Germany or Crossrail in London. The RER tunnels were all built in this phase.

baud147258 4y ago

maybe when using RER, the author meant the short-distance train lines that already existed before the RER network was built up?