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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" class="active"><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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<h1 class="menu-title">A/B Street</h1>
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<main>
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<h1><a class="header" href="#project-motivations" id="project-motivations">Project motivations</a></h1>
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<p>I thought it'd be helpful to explain what motivates my work in A/B Street. These
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are just my personal values; I don't intend to make a careful argument about
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these here. In no particular order:</p>
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<ul>
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<li>
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<p><strong>Transparency and reproducibility</strong>: if city government uses data, modeling,
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or simulation to inform a decision affecting the general public, then anybody
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ought to be able to repeat that analysis.</p>
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<ul>
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<li>This means code and data should be open.</li>
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<li>Businesses like <a href="https://replicahq.com/">Sidewalk Lab's Replica</a> and
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<a href="https://www.remix.com/solutions/streets">Remix</a> still need to generate
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income, but it's unclear why governments use taxes to pay for something only
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they see.</li>
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<li>Decision making should be documented clearly. Why were the
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<a href="https://www.seattle.gov/transportation/projects-and-programs/programs/maintenance-and-paving/current-paving-projects/35th-ave-ne">35th Ave bike lanes</a>
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scrapped? Was the amount of on-street parking on nearby residential roads
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factored in? Was there analysis of how trip time is impacted by parking in
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the neighborhood and walking a few blocks to a business on the arterial?</li>
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<li>I'm personally inspired by approaches like
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<a href="https://info.vtaiwan.tw/">vTaiwan</a> and
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<a href="https://po.pdis.nat.gov.tw/en/opengov/">PDIS</a></li>
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</ul>
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</li>
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<li>
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<p><strong>Accessibility leads to participation</strong>: There's overhead to taking small
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ideas to advocacy groups or inconveniently timed public meetings. If the
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planning process is easier to interact with, more people will participate.</p>
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<ul>
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<li>Seattle's
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<a href="https://www.seattle.gov/neighborhoods/programs-and-services/your-voice-your-choice">Your Voice, Your Choice</a>
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program is maybe an example of this</li>
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</ul>
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</li>
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<li>
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<p><strong>Short-term changes</strong>: <a href="https://en.wikipedia.org/wiki/Sound_Transit_3">ST3</a>
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is exciting, but 2040 isn't close. There are much cheaper changes that can be
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implemented sooner.</p>
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<ul>
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<li>Most of the edits in A/B Street are inspired by tactical urbanism; they
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could be prototyped with signs and paint.</li>
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</ul>
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</li>
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<li>
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<p><strong>The US is too dependent on cars</strong>: This has an unacceptable impact on the
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environment. Even ignoring that, many cities are out of room to build more
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roads. We can't keep scaling population like this.</p>
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</li>
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<li>
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<p><strong>Autonomous vehicles will NOT save the day</strong>: They can squeeze more
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throughput out of existing infrastructure, but only up to a point. They might
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encourage people to move and tolerate longer commutes. Mass transit and dense
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land-use patterns handle population growth better.</p>
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</li>
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<li>
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<p><strong>Compromise and trade-offs</strong>: I see lots of rhetoric calling for extreme,
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sudden change. I don't want to ban all cars from downtown Seattle, because
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that's not realistic. I want to focus on immediate steps forward. I want to
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come up with estimates about impacting drivers by a median 3 minutes in order
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to save a bus route 1 minute, and to shift public discourse towards that.</p>
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</li>
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