De quoi est fait metro
An urban railway separated from the streets; the first was in London.
- Turnstile — a pour partie. Turnstiles.
- Locomotive électrique — utilise. The first lines were steam-operated; electric trains since 1890.
- Railway track — utilise. It runs on rails.
- Tunnelling shield — utilise. Metro tunnels were built with shields.
- Tunnel — utilise. Tunnels.
- Brique — est fait de. The vaults of the first tunnels are brick.