4 ms·
It's a little more complicated in the case of the NYC Subway because the size of the tunnels and stations is based on the size of the rolling stock. BMT/IND (B
by ElevenLathe 3y ago
It's a little more complicated in the case of the NYC Subway because the size of the tunnels and stations is based on the size of the rolling stock. BMT/IND (B Division aka the letter trains) trains simply can't be driven through IRT (A Division aka the number trains) tunnels. A "changeover" would entail widening tunnels and platforms many feet below Manhattan, not just moving a lot of rails.
- xenadu02 3y agoYeah that makes sense. I just thought it was really neat that the US pulled off such a massive project to standardize gauge over a single weekend - similar to Sweden switching from LHD to RHD on a single day. It's a huge coordination, organization, and training challenge. In the rail case it was done entirely on paper with a little bit of telegraph support.