# a-b-street/abstreet

Transportation planning and traffic simulation software for creating cities friendlier to walking, biking, and public transit

Repository: https://github.com/a-b-street/abstreet
Canonical: https://ross.abutalabs.com/products/abstreet
Homepage: https://a-b-street.github.io/docs/
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: traffic-simulation, game, openstreetmap, simulation, seattle
Last push: 2025-09-10T09:20:24+00:00

## Health v2 (maintenance only)
Score: 41/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 41, release rhythm 8, longevity 100
- inputs: {"age_days": 3013, "days_push": 357, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8159, forks 380 (observed 2026-08-28T04:10:13.928860+00:00)

## What it is
A/B Street is a transportation planning and traffic simulation application for exploring how street edits affect walking, biking, and public transit. It works anywhere using OpenStreetMap data and has since spun off several successor planning tools.

## Use cases
- simulate traffic impacts of proposed street changes
- edit intersections and add bus or bike lanes on a real map
- plan bike networks and low-traffic neighborhoods
- educate the public about 15-minute neighborhoods through games
- explore how pedestrian crossings detour around big roads

## When to choose
- you want to visualize or simulate traffic changes on real OpenStreetMap data
- you are an advocate or planner sketching walkability and cycling improvements
- you need a cross-platform desktop or browser-based traffic simulator

## When to avoid
- you need a maintained tool - the project has split into successor tools like LTN and od2net
- you need microscopic traffic engineering certification or professional modeling standards
- you need a general-purpose game engine or city builder

## Facets
- artifact type: application
- maturity: maintenance
- function: simulation, game, data-visualization, geospatial
- domain: simulation, education
- platform: cross-platform, windows, rust
- tags: traffic-simulation, openstreetmap, transportation-planning, urban-planning, active-travel, rust, maps, web-server, macos, linux

## Member repositories
- a-b-street/abstreet (main) score 41

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:13.928860+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 2026-08-29T17:29:45.211467+00:00, confidence not recorded.
  - readme: https://github.com/a-b-street/abstreet (fetched 2026-08-28T04:10:13.928860+00:00, sha 0a2f2c3cf191)
  - homepage: https://a-b-street.github.io/docs/ (fetched 2026-08-29T08:28:24.636225+00:00, sha da2ddd6d45dc)
- Data as of 2026-08-30T08:39:29.467469+00:00.