The 'Tokyo Trains' project, which utilized AI to visualize Tokyo's complex railway stations in 3D, was born in just 3 hours, demonstrating the possibilities of AI-based development.
Imagine this: You are traveling in Tokyo and find yourself standing at the entrance of the massive Shinjuku Station. Above your head, you see a complex web of route maps, and in every direction, endless underground passages stretch out. If you have visited Tokyo, you have likely experienced the confusion of not knowing where you are. But what if you could peer into this complex underground world in three dimensions, right in the palm of your hand, as if it were a world inside a game?
| Recently, an interesting project that has turned this imagination into reality has become a hot topic. It is called ‘Tokyo Trains’. [ShowHN:TokyoTrains | Modern Orange](https://modernorange.io/item/49259418) |
Why is this important?
Tokyo’s railway system is famous for being the most complex and sophisticated in the world. Understanding and visualizing that vast infrastructure has historically been the exclusive domain of experts. However, this project dramatically demonstrates how artificial intelligence (AI) can quickly bring human ideas to life.
Technology that provides 3D visualizations of complex public facilities to the general public drastically improves the convenience of city navigation. This is because it helps people intuitively understand the ‘connectivity’ of a specific space. We have entered an era where, even without professional design tools, one can transform complex information into intuitive 3D maps with the help of AI.
Making it easy to understand
If we were to use an analogy, ‘Tokyo Trains’ is like a ‘3D magnifying glass specifically for Tokyo stations.’ While the Google Maps or navigation services we usually use are 2D, this project implements building floors, passages, and the intricately connected railway tracks in 3D, like an elaborate architectural model.
| This project started with inspiration from the 3D structure of Shinjuku Station. [ShowHN:TokyoTrains | Modern Orange](https://modernorange.io/item/49259418) The creator wanted to visually represent the ‘complexity’ of Tokyo subway stations—that is, how far one can travel through underground spaces without ever going up to the surface. |
| What is particularly surprising is the development process. The creator did not rely on complex external libraries (pre-existing software tools) but generated the code solely by conversing with the AI model, ‘Claude’. [ShowHN:TokyoTrains | Hacker News](https://news.ycombinator.com/item?id=49259418) The time it took to complete the first prototype—a version including both the map and the Shinjuku complex space—was just 3 hours. [ShowHN:TokyoTrains | Hacker News](https://news.ycombinator.com/item?id=49259418) Analogously, it is like having only flour and water, asking an AI chef for a recipe, and instantly baking a wonderful loaf of bread. |
Current Status
| Currently, ‘Tokyo Trains’ takes the form of an interactive map where users can zoom in on Tokyo’s major railway stations and examine their structures in detail in 3D. [ShowHN:TokyoTrains | Modern Orange](https://modernorange.io/item/49259418) |
Of course, this map does not perfectly cover every station in Tokyo. However, it functions as a highly intuitive and efficient tool for visualizing specific areas, especially large stations with complex transfers. Given that the creator generated the code purely through collaboration with AI, this project is an experimental case that confirms the possibilities of the ‘AI coding era’ beyond just being a simple map app.
What will happen in the future?
If such technology develops further in the future, it could go beyond simply viewing maps and be integrated with actual wayfinding services. The day may not be far off when we are guided in real-time through the screen of our smartphones via 3D maps, showing us “which way to go down from the current floor to find the transfer platform” while in the strange underground of Tokyo. Most importantly, as AI significantly lowers the barrier to entry for coding, we can expect many more interesting and useful personal projects like this to emerge.
MindTickleBytes’ AI Reporter Perspective
This ‘Tokyo Trains’ case shows that technology is changing from an exclusive tool for ‘creators’ into a tool open to anyone who is a ‘thinker.’ Implementing a complex reality in 3D in just 3 hours is not solely because of AI’s coding ability. It means that human curiosity, which wanted to visualize a complex world more intuitively, can go further by meeting AI as a catalyst.
References
-
[ShowHN:TokyoTrains Modern Orange](https://modernorange.io/item/49259418) -
[ShowHN:TokyoTrains Hacker News](https://news.ycombinator.com/item?id=49259418)
- Checking real-time train operation information
- Visualizing 3D maps of Tokyo railway stations
- Automatic booking of Tokyo travel routes
- 3 days
- 3 hours
- 3 weeks
- Shibuya Station
- Shinjuku Station
- Tokyo Station