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<ol class="chapter"><li class="chapter-item expanded "><a href="../index.html"><strong aria-hidden="true">1.</strong> Overview</a></li><li class="chapter-item expanded "><a href="../howto/index.html"><strong aria-hidden="true">2.</strong> Instructions</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../howto/map_parking.html"><strong aria-hidden="true">2.1.</strong> How to map on-street parking</a></li><li class="chapter-item expanded "><a href="../howto/new_city.html" class="active"><strong aria-hidden="true">2.2.</strong> Importing a new city</a></li></ol></li><li class="chapter-item expanded "><a href="../how_it_works.html"><strong aria-hidden="true">3.</strong> How it works</a></li><li class="chapter-item expanded "><a href="../case_studies/index.html"><strong aria-hidden="true">4.</strong> Case studies</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../case_studies/lake_wash.html"><strong aria-hidden="true">4.1.</strong> Lake Washington Blvd Stay Healthy Street</a></li><li class="chapter-item expanded "><a href="../case_studies/west_seattle.html"><strong aria-hidden="true">4.2.</strong> West Seattle mitigations</a></li><li class="spacer"></li></ol></li><li class="chapter-item expanded "><a href="../dev/index.html"><strong aria-hidden="true">5.</strong> Developer guide</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../dev/misc_tricks.html"><strong aria-hidden="true">5.1.</strong> Misc developer tricks</a></li><li class="chapter-item expanded "><a href="../dev/api.html"><strong aria-hidden="true">5.2.</strong> API</a></li><li class="chapter-item expanded "><a href="../dev/testing.html"><strong aria-hidden="true">5.3.</strong> Testing</a></li><li class="chapter-item expanded "><a href="../dev/mass_import.html"><strong aria-hidden="true">5.4.</strong> Importing many maps</a></li><li class="chapter-item expanded "><a href="../dev/data.html"><strong aria-hidden="true">5.5.</strong> Data organization</a></li></ol></li><li class="chapter-item expanded "><a href="../map/index.html"><strong aria-hidden="true">6.</strong> Map model</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../map/details.html"><strong aria-hidden="true">6.1.</strong> Details</a></li><li class="chapter-item expanded "><a href="../map/importing/index.html"><strong aria-hidden="true">6.2.</strong> Importing</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../map/importing/convert_osm.html"><strong aria-hidden="true">6.2.1.</strong> convert_osm</a></li><li class="chapter-item expanded "><a href="../map/importing/geometry.html"><strong aria-hidden="true">6.2.2.</strong> Road/intersection geometry</a></li><li class="chapter-item expanded "><a href="../map/importing/rest.html"><strong aria-hidden="true">6.2.3.</strong> The rest</a></li><li class="chapter-item expanded "><a href="../map/importing/misc.html"><strong aria-hidden="true">6.2.4.</strong> Misc</a></li></ol></li><li class="chapter-item expanded "><a href="../map/edits.html"><strong aria-hidden="true">6.3.</strong> Live edits</a></li><li class="chapter-item expanded "><a href="../map/platform.html"><strong aria-hidden="true">6.4.</strong> Exporting</a></li></ol></li><li class="chapter-item expanded "><a href="../trafficsim/index.html"><strong aria-hidden="true">7.</strong> Traffic simulation</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../trafficsim/discrete_event.html"><strong aria-hidden="true">7.1.</strong> Discrete event simulation</a></li><li class="chapter-item expanded "><a href="../trafficsim/travel_demand.html"><strong aria-hidden="true">7.2.</strong> Travel demand</a></li><li class="chapter-item expanded "><a href="../trafficsim/gridlock.html"><strong aria-hidden="true">7.3.</strong> Gridlock</a></li><li class="chapter-item expanded "><a href="../trafficsim/trips.html"><strong aria-hidden="true">7.4.</strong> Multi-modal trips</a></li><li class="chapter-item expanded "><a href="../trafficsim/live_edits.html"><strong aria-hidden="true">7.5.</strong> Live edits</a></li><li class="chapter-item expanded "><a href="../trafficsim/parking.html"><strong aria-hidden="true">7.6.</strong> Parking</a></li><li class="spacer"></li></ol></li><li class="chapter-item expanded "><a href="../project/index.html"><strong aria-hidden="true">8.</strong> Project</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../project/roadmap.html"><strong aria-hidden="true">8.1.</strong> Roadmap</a></li><li class="chapter-item expanded "><a href="../project/motivations.html"><strong aria-hidden="true">8.2.</strong> Motivations</a></li><li class="chapter-item expanded "><a href="../project/history/index.html"><strong aria-hidden="true">8.3.</strong> History</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../project/history/backstory.html"><strong aria-hidden="true">8.3.1.</strong> Backstory</a></li><li class="chapter-item expanded "><a href="../project/history/year1.html"><strong aria-hidden="true">8.3.2.</strong> Year 1</a></li><li class="chapter-item expanded "><a href="../project/history/year2.html"><strong aria-hidden="true">8.3.3.</strong> Year 2</a></li><li class="chapter-item expanded "><a href="../project/history/year3.html"><strong aria-hidden="true">8.3.4.</strong> Year 3</a></li></ol></li><li class="chapter-item expanded "><a href="../project/CHANGELOG.html"><strong aria-hidden="true">8.4.</strong> Full CHANGELOG</a></li><li class="chapter-item expanded "><a href="../project/references.html"><strong aria-hidden="true">8.5.</strong> References</a></li><li class="chapter-item expanded "><a href="../project/collaborations.html"><strong aria-hidden="true">8.6.</strong> Collaborations</a></li></ol></li></ol>
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<main>
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<h1><a class="header" href="#importing-a-new-city-into-ab-street" id="importing-a-new-city-into-ab-street">Importing a new city into A/B Street</a></h1>
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<p>This process isn't easy yet. Please email <a href="mailto:dabreegster@gmail.com">dabreegster@gmail.com</a> or
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<a href="https://github.com/dabreegster/abstreet/issues/">file a Github issue</a> if you
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hit problems. I'd really appreciate help and PRs to improve this.</p>
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<h2><a class="header" href="#quick-start" id="quick-start">Quick start</a></h2>
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<p>Use this if you want to import a city on your computer without making it
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available to other users yet.</p>
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<ul>
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<li>
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<p>If you're using the <strong>binary release</strong> and have a <code>.osm</code> file, just do:
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<code>./importer --oneshot=map.osm</code>.</p>
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</li>
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<li>
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<p>If you're building <strong>from source</strong>, do: <code>./import.sh --oneshot=map.osm</code>. If
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you can't run <code>import.sh</code>, make sure you have all
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<a href="../dev/index.html#building-map-data">dependencies</a>. If you're using Windows and
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the console logs appear in a new window, try running the command from
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<code>import.sh</code> directly, changing the <code>$@</code> at the end to <code>--oneshot=map.osm</code> or
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whatever arguments you're passing in.</p>
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</li>
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</ul>
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<p>The oneshot importer will will generate a new file in <code>data/system/oneshot/maps</code>
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that you can then load in the game. If you have an Osmosis polygon filter (see
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below), you can also pass <code>--oneshot_clip=clip.poly</code> to improve the result. You
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should first make sure your .osm has been clipped:
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<code>osmconvert large_map.osm -B=clipping.poly --complete-ways -o=smaller_map.osm</code>.</p>
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<p>By default, driving on the right is assumed. Use <code>--oneshot_drive_on_left</code> to
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invert.</p>
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<h3><a class="header" href="#how-to-get-osm-files" id="how-to-get-osm-files">How to get .osm files</a></h3>
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<p>If the area is small enough, try the "export" tool on
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<a href="https://www.openstreetmap.org">https://www.openstreetmap.org</a>. You can download larger areas from
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<a href="https://download.bbbike.org/">https://download.bbbike.org/</a> or <a href="http://download.geofabrik.de/index.html">http://download.geofabrik.de/index.html</a>,
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then clip them to a smaller area. Use <a href="http://geojson.io/">geojson.io</a> or
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<a href="https://geoman.io/geojson-editor">geoman.io</a> to draw a boundary around the
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region you want to simulate and save the GeoJSON locally. Use
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<code>cargo run --bin geojson_to_osmosis < boundary.geojson</code> to convert that GeoJSON
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to the
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<a href="https://wiki.openstreetmap.org/wiki/Osmosis/Polygon_Filter_File_Format">Osmosis format</a>
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required by osmconvert.</p>
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<p>Note that you may hit problems if you use JOSM to download additional data to a
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.osm file. Unless it updates the <code><bounds/></code> element, A/B Street will clip out
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anything extra. The best approach is to explicitly specify the boundary with
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<code>--oneshot_clip</code>.</p>
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<h2><a class="header" href="#including-the-city-to-ab-street-more-permanently" id="including-the-city-to-ab-street-more-permanently">Including the city to A/B street more permanently</a></h2>
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<p>Follow this guide to add a new city to A/B street by default so other users can
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use it as well.</p>
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<ol>
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<li>
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<p>Make sure you can run <code>import.sh</code> -- see
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<a href="../dev/index.html#building-map-data">the instructions</a>. You'll need Rust,
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osmconvert, gdal, etc.</p>
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</li>
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<li>
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<p>Create a new directory: <code>mkdir importer/config/your_city</code></p>
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</li>
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<li>
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<p>Use <a href="http://geojson.io/">geojson.io</a> or
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<a href="https://geoman.io/geojson-editor">geoman.io</a> to draw a boundary around the
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region you want to simulate and save the geojson locally.</p>
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</li>
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<li>
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<p>Use <code>cargo run --bin geojson_to_osmosis < boundary.geojson</code> to convert that
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geojson to the
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<a href="https://wiki.openstreetmap.org/wiki/Osmosis/Polygon_Filter_File_Format">Osmosis format</a>
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required by osmconvert. This tool writes one file per feature in the input,
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so you'd then
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<code>mv boundary0.poly importer/config/your_city/region_name.poly</code>, repeating if
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you drew multiple polygons.</p>
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</li>
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<li>
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<p>Copy <code>importer/config/tel_aviv/cfg.json</code> to
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<code>importer/config/your_city/cfg.json</code> and edit this file. See
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<a href="https://github.com/dabreegster/abstreet/blob/master/importer/src/generic.rs">here</a>
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for details on the different fields. The defaults are a reasonable start;
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the only thing you need to change is <code>osm_url</code>.</p>
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</li>
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<li>
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<p>Run it: <code>./import.sh --city=your_city --raw --map</code></p>
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</li>
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<li>
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<p>Update <code>.gitignore</code>, following <code>tel_aviv</code> as an example.</p>
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</li>
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</ol>
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<p>Send a PR with your changes! I'll generate everything and make it work with
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<code>updater</code>, so most people don't have to build everything from scratch.</p>
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<p>Also, you can divide the city into multiple regions, repeating step 4 and
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declaring more polygon boundaries. The boundaries may overlap each other, and
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they don't have to cover all of the space. Picking good boundaries may take
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trial-and-error; the goal is to keep the resulting map file size small, so that
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it loads quickly, while capturing all of the area needed to simulate something
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interesting. This is easiest when you have some local knowledge of the area, and
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at least a vague goal in mind for what you want to study.</p>
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<h2><a class="header" href="#next-steps" id="next-steps">Next steps</a></h2>
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<p>OpenStreetMap isn't the only data source we need. If you look at the import
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pipeline for Seattle, you'll see many more sources for parking, GTFS bus
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schedules, person/trip demand data for scenarios, etc. Most of these aren't
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standard between cities. If you want to make your city more realistic, we'll
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have to import more data. Get in touch.</p>
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<p>You may notice issues with OSM data while using A/B Street. Some of these are
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bugs in A/B Street itself, but others are incorrectly tagged lanes. Some
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resources for fixing OSM:</p>
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<ul>
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<li><a href="https://learnosm.org">https://learnosm.org</a></li>
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<li><a href="https://wiki.openstreetmap.org/wiki/StreetComplete">https://wiki.openstreetmap.org/wiki/StreetComplete</a></li>
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<li><a href="map_parking.html">Mapping parking</a></li>
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</ul>
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