4 ms·
According to TFA, the pneumatic clock system was in operation until 1927, so there might have been plenty of time to make use of the Metro's tunnels at least a
by bunderbunder 8y ago
According to TFA, the pneumatic clock system was in operation until 1927, so there might have been plenty of time to make use of the Metro's tunnels at least a little bit - perhaps to extend service to new buildings.
- bambax 8y agoMaybe, but not at the time of implementation, and certainly never with the RER.