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The subway is actually a systems that is easier to change than others (unless you talk about the physical dimensions of the train) since it’s an isolated system
by pantalaimon 4y ago
The subway is actually a systems that is easier to change than others (unless you talk about the physical dimensions of the train) since it’s an isolated system and lines are usually separate too, so you don’t have to change it all at one.
- bregma 4y agoYou're not describing the New York City subway. The L line was separated from pretty much everything else so it got upgraded to CBTC over a few years as budget, time constraints, and politics allowed. The rest of the network is thoroughly interwoven and runs 24x7. It also carries more people daily than all the other systems on the continent combined.
- Tokkemon 4y agoSure, but the New York Subway is the most interlined metro system in the world. You have to essentially change everything at once, or at least go trunk line by trunk line, or run two separate systems concurrently. None of which are easy options.