# mbtaviz/mbtaviz.github.io

Visualizing MBTA Data

Repository: https://github.com/mbtaviz/mbtaviz.github.io
Canonical: https://ross.abutalabs.com/products/mbtavizgithubio
Homepage: http://mbtaviz.github.io
Language: JavaScript
License Family: other
Last push: 2023-01-19T13:12:45+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4520, "days_push": 1322, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1078, forks 175 (observed 2026-08-28T04:03:29.784835+00:00)

## What it is
An interactive web-based visualization of Boston's MBTA subway system, showing train movements, station activity, and rider behavior from February 2014 data. It was built with JavaScript and D3 and is hosted as a static GitHub Pages site.

## Use cases
- explore how Boston subway trains move throughout the day
- visualize MBTA train delays and performance
- understand passenger entry and exit patterns at subway stations
- learn how to build interactive transit data visualizations with D3
- see a Marey diagram of subway trips
- find examples of visualizing GTFS and realtime transit feeds

## When to choose
- you want an interactive exploration of Boston's subway system performance
- you are studying examples of transit or Marey diagram visualizations
- you need a reference for visualizing GTFS or realtime train location data

## When to avoid
- you need live, current MBTA data since the dataset is from February 2014
- you need a reusable library or API rather than a one-off visualization site
- you need actively maintained software or support

## Facets
- artifact type: application
- maturity: abandoned
- function: data-visualization
- domain: data-visualization
- platform: -
- tags: d3, transit, mbta, boston, subway, interactive-visualization, gtfs, maps, real-time, web-server, nodejs

## Member repositories
- mbtaviz/mbtaviz.github.io (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:29.784835+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:53:10.518378+00:00, confidence not recorded.
  - readme: https://github.com/mbtaviz/mbtaviz.github.io (fetched 2026-08-28T04:03:29.784835+00:00, sha a2d7940d2543)
  - homepage: http://mbtaviz.github.io (fetched 2026-08-29T12:54:17.496918+00:00, sha 9407b5ab1179)
- Data as of 2026-08-30T08:39:29.467469+00:00.