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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"><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></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" class="active"><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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<h1 class="menu-title">A/B Street</h1>
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<main>
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<h1><a class="header" href="#year-2-june-2019-2020" id="year-2-june-2019-2020">Year 2 (June 2019-2020)</a></h1>
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<p><img src="oct_2019.png" alt="Circa October 2019" /></p>
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<ul>
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<li>
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<p>June: contraction hierarchies for pathfinding, stackable game states</p>
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</li>
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<li>
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<p>July: OSM turn restrictions, misc (I think I was in Europe?)</p>
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</li>
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<li>
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<p>August: pedestrian crowds, agent color schemes, parking blackholes, a big
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<code>raw_data</code> refactor to store <code>Pt2D</code>, attended first hackathon</p>
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</li>
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<li>
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<p>September: offstreet parking, associating parked cars with buildings using
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Soundcast (before that, anybody could use any car!), implemented texture
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support for some reason, doing manual <code>MapFixes</code> at scale to fix OSM bugs</p>
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<ul>
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<li><strong>milestone</strong>: got the smallest montlake map to run without gridlock</li>
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</ul>
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</li>
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<li>
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<p>October: parking sim fixes, opportunistic lane-changing, starting challenge
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modes</p>
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</li>
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<li>
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<p>November: prebaked sim results, time-series plots, undo for edit mode, traffic
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signal editor grouping turns</p>
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<ul>
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<li><strong>milestone</strong>: Yuwen joins project</li>
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</ul>
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</li>
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<li>
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<p>December: the UI reform begins (flexbox, minimap, trip timelines, cutting over
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to SVGs, info panels, scrolling), started naming releases sensibly</p>
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<ul>
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<li>Project leaked to <a href="https://news.ycombinator.com/item?id=21763636">HN</a>, woops</li>
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</ul>
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</li>
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<li>
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<p>January: UI reform continues, the modern tutorial mode appears</p>
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</li>
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<li>
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<p>Feburary: UI and tutorial, all text now pure vectors, port to glow+WASM</p>
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</li>
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<li>
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<p>March: lockdowns start in US, start grouping trips as a person, population
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heatmap, left-hand driving, info panel and typography overhauls. started
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engaging with Greenways, started effort to map traffic signals</p>
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</li>
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<li>
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<p>April: Orestis joins and starts the pandemic model, trip tables, the optimize
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commute challenge, refactor for people's schedules and owned vehicles, trip
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time dat viz, MAJOR progress fixing gridlock at the sim layer</p>
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</li>
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<li>
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<p>May: gridlock progress, upstreaming fixes in OSM, differential throughput and
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first real write-up, long-lasting player edits, dedicated parking mapper,
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maybe vanquished the HiDPI bugs, multi-step turn restrictions, random bios for
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people, and docs like this to prep for launch ;)</p>
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<ul>
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<li><strong>milestone</strong>: relying on pure OSM, no more <code>MapFixes</code></li>
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</ul>
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</li>
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