https://github.com/lzear/ubahnchen

Berlin subway map, animated
https://github.com/lzear/ubahnchen

berlin gtfs livemap metro network public-transit subway ubahn

Last synced: 4 days ago
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Berlin subway map, animated

• Host: GitHub
• URL: https://github.com/lzear/ubahnchen
• Owner: lzear
• Created: 2022-08-29T23:46:18.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2024-10-20T19:19:26.000Z (23 days ago)
• Last Synced: 2024-10-20T23:51:45.272Z (23 days ago)
• Topics: berlin, gtfs, livemap, metro, network, public-transit, subway, ubahn
• Language: JavaScript
• Homepage: https://ubahnchen.vercel.app
• Size: 86.7 MB
• Stars: 90
• Watchers: 1
• Forks: 3
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# Ubähnchen

**[ubähnchen.vercel.app](https://xn--ubhnchen-1za.vercel.app/)**

An animated live map of the Berlin U-Bahn.





 


## How it works

### Planned mode

Schedules are extracted from

the [GTFS data of the VBB](https://www.vbb.de/vbb-services/api-open-data/datensaetze/)

which contains

the `arrival time` and `departure time` for a time period of several months. The

movement of the train is simulated at constant speed between stations.

The GTFS data is currently manually updated, so it is constantly lagging a few

days behind latess updates from VBB.

### Live mode (beta)

Mandatory stuff: "Powered by VBB GmbH. All information without guarantee."

The [HAFAS API](https://github.com/public-transport/hafas-client) has a “radar”

endpoint, giving the position of all trains and some animation data, containing

stops information (origin, target, time) and a `proc`

value, which I think means "position between 2 stops in percent". So I'm using

that to place trains on the map.

Unfortunately, there are some implementation mistakes from me, causing trains to

move

weirdly or disappear.

### Maps

The [U-Bahn](https://de.wikipedia.org/wiki/Datei:U-Bahn_Berlin_-_Netzplan.svg)

map

and [S-Bahn+U-Bahn](https://de.wikipedia.org/wiki/Datei:S-_und_U-Bahn-Linien_Berlin.svg)

maps ( [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)) are

taken from Wikipedia and modified. In particular, the paths for the lines needed

to be made continuous, instead of being many disjoint portions.

### Animation

The display and animations is made with [paperjs](http://paperjs.org/).

### Thanks

* [Jannis R](https://github.com/derhuerst) for his libraries and documentation that were very helpful to build this project.

* VBB for publishing the data and having APIs that are necessary for this project. And also for running the trains.

## Development

### Setup

⚠️ Many steps are certainly missing. Please don't hesitate to open issues or PRs

before you get frustrated with this.

* `yarn install`

* `yarn build` in the gtfs-loader package. This should:

    * Download

      the [files from VBB](https://www.vbb.de/vbb-services/api-open-data/datensaetze/)

      in the `ubahnchen/GTFS` folder.

    * Filter out transportation modes that are not in use yet (bus, tram,

      boat...).

    * Save all relevant values in a SQLite database

* Run the unit test. They validate the data.

* `yarn dev` in the ui package.

### Things I like to look at in the future

* https://www.berlintransitmap.de/

* https://en.wikipedia.org/wiki/Berlin_U-Bahn

The timezones are probably not handled properly. Please make sure you are

in `CET` before running `yarn build` 😄