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https://github.com/a-b-street/abstreet

Transportation planning and traffic simulation software for creating cities friendlier to walking, biking, and public transit
https://github.com/a-b-street/abstreet

game openstreetmap seattle simulation traffic-simulation

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

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# A/B Street



[![DOI](https://zenodo.org/badge/135952436.svg)](https://zenodo.org/badge/latestdoi/135952436)

[![](https://dcbadge.vercel.app/api/server/nCvMD4xj4K?style=flat)](https://discord.gg/nCvMD4xj4K)



Ever been stuck in traffic on a bus, wondering why is there legal street parking

instead of a dedicated bus lane? A/B Street is a project to plan, simulate, and

communicate visions for making cities friendlier to people walking, biking, and

taking public transit. We create software to

[simulate traffic, edit streets and intersections](https://a-b-street.github.io/docs/software/abstreet.html),

[plan bike networks](https://a-b-street.github.io/docs/software/ungap_the_map/index.html),

create

[low-traffic neighborhoods](https://a-b-street.github.io/docs/software/ltn/index.html),

and educate the public about

[15-minute neighborhoods through games](https://a-b-street.github.io/docs/software/santa.html).

The project works anywhere in the world, thanks to

[OpenStreetMap](https://www.openstreetmap.org/about).



- Run it on [your web browser](https://play.abstreet.org/0.3.49/abstreet.html),

  [Windows](https://github.com/a-b-street/abstreet/releases/download/v0.3.49/abstreet_windows_v0_3_49.zip),

  [Mac](https://github.com/a-b-street/abstreet/releases/download/v0.3.49/abstreet_mac_v0_3_49.zip),

  [Linux](https://github.com/a-b-street/abstreet/releases/download/v0.3.49/abstreet_linux_v0_3_49.zip),

  [FreeBSD](https://www.freshports.org/games/abstreet/), or

  [read all instructions](https://a-b-street.github.io/docs/user/index.html)

- [build from source](https://a-b-street.github.io/docs/tech/dev/index.html)



As of January 2024, development of the tools above has slowed down, because

newer tools are being developed in other repositories. Please also check out:



- [Severance Snape](https://dabreegster.github.io/severance_snape) to explore

  how far walking routes detour to cross big roads

- [od2net](https://github.com/Urban-Analytics-Technology-Platform/od2net) to

  calculate the most important roads to prioritize for cycling



## Videos



- [Alpha release trailer](https://www.youtube.com/watch?v=LxPD4n_1-LU)

- [Presentations](https://a-b-street.github.io/docs/project/presentations.html)



![](https://a-b-street.github.io/docs/project/history/retrospective/traffic_sim.gif)



## Documentation



- [User guide](https://a-b-street.github.io/docs/user/index.html)

- Technical

  - [Developer guide](https://a-b-street.github.io/docs/tech/dev/index.html)

  - [How the traffic simulation works](https://a-b-street.github.io/docs/tech/trafficsim/discrete_event/index.html)

  - [Intersection geometry](https://a-b-street.github.io/docs/tech/map/geometry/index.html)

- Project

  - [Roadmap](https://a-b-street.github.io/docs/software/ungap_the_map/plan.html#future-directions)

  - [Getting involved](https://a-b-street.github.io/docs/project/contributing.html)

  - [Accomplishments & challenges](https://a-b-street.github.io/docs/project/history/retrospective/index.html)



## Project mission



We amplify the efforts of individuals and advocacy groups who campaign to

transition cities away from private motor vehicles. We believe in transparent

and reproducible analysis, so all of our work is open source and based on public

data. We believe everybody should have a voice in shaping their city, so our

software aims to be easy to use.



Why not leave city planning to professionals? People are local experts on the

small slice of the city they interact with daily -- the one left turn lane that

always backs up or a certain set of poorly timed walk signals.

[Laura Adler](http://www.govtech.com/data/SimCities-Can-City-Planning-Mistakes-Be-Avoided-Through-Data-Driven-Simulations.html)

writes:



> "Only with simple, accessible simulation programs can citizens become active

> generators of their own urban visions, not just passive recipients of options

> laid out by government officials."



Existing urban planning software is either proprietary or hard to use. A/B

Street strives to be highly accessible, by being a fun, engaging game. See

[here](https://a-b-street.github.io/docs/project/motivations.html) for more

guiding principles.



## Credits



Core team:



- Dustin Carlino ()

- [Yuwen Li](https://www.yuwen-li.com/) (UX)

- [Michael Kirk](https://github.com/michaelkirk)



[See full credits](https://a-b-street.github.io/docs/project/team.html)



Contact  or follow

[@CarlinoDustin](https://twitter.com/CarlinoDustin) for updates.