Show HN: Public transit systems as data – lines, stations, railcars, and history
qwertykb
43 points
20 comments
March 29, 2026
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Discussion Highlights (10 comments)
zeristor
Looks good. London, Paris, Copenhagen, Rome, Madrid? I guess it takes a while to add each new one in.
wolvoleo
Nice site but there's so few systems in it.
TimK65
Very nice! I think we're confusing route length and track length, though.
afferi300rina
The ⌘K command palette is a great touch for this terminal-style UI. It would be even better if we could search by railcar models (like 'R211') or specific line colors directly through it. Excited to see this grow!
petra
This is interesting, for sure. Thinking about this, I think what happens if we take it to the extreme - a system that lets a single user enter his route to work - and compare how various transportation systems, including innovative ones, would impact his day to day. It's really hard to build such tool, and if it's done well and made appealing to users, it could be the base of a political tool for people to pressure their representatives to implement new and better systems and improve voters lives.
zephyreon
So interesting that Baltimore’s very subpar public transit system made it into the first batch of systems — not complaining at all I love that city & love to see it in random places on the internet :)
bluebarbet
>a unique visual style that appeals to transit enthusiasts But it seems to be just an API with a website sporting a terminal font. What am I missing?
kent8192
This is interesting! However, can't it switch the unit to meters, not miles? From the link you provided, it appears the API doesn't include information about its unit in the responses. So, it's confusing.
ranger_danger
> Tokyo Metro is one of two rapid transit operators in Tokyo, Japan (the other being Toei Subway) I'm assuming this text is an AI hallucination because there are dozens of rail operators in Tokyo. Tokyo Metro is not even the largest and basically only operates an underground subway. JR (Japan Rail) operates above-ground and is much larger (and nation-wide). https://en.wikipedia.org/wiki/List_of_urban_rail_systems_in_... Just a single line of JR East's (Yamanote) moves a third as many people daily as Tokyo Metro does all by itself, and JR has over 50 lines just in Tokyo.
cyberrock
It's difficult to tell what the end goal is, but you probably need to see some of these systems and broaden your understanding first. For example, Tokyo Metro has many out-of-gate transfers, where the user taps out of special gates (Ikebukuro M/F) and into another paid area (Ikebukuro Y) on the same fare, as long as it's within 30 minutes. There are also out-of-gate transfers between different stations, such as Shintomicho and Tsukiji. Beijing has transfers within the same paid area that are notorious for being long and/or congested, so much so that some believe it's an intentional traffic control mechanism. These all have significant implications on actual experienced commute time and fare. So if the end goal includes human navigation or commute statistics, it's incomplete without such considerations. Those government APIs you're using are only concerned with ridership and not these details. Short of visiting these places, you could watch vlogs (there's probably 5 for every Tokyo Metro station), and you could perhaps simulate some routes on existing navigation systems.