The London subway was private and returned enough profit to slowly expand while it was coal powered. Once it electrified, it became more profitable and expanded quickly.
The Baltimore tunnel was and is part of an intercity line that is mostly above ground. It was technologically similar to London, but operationally very different.
The London subway was private and returned enough profit to slowly expand while it was coal powered. Once it electrified, it became more profitable and expanded quickly.
The Baltimore tunnel was and is part of an intercity line that is mostly above ground. It was technologically similar to London, but operationally very different.