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Expand Up @@ -85,6 +85,22 @@ <h1> Research
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<h3><a href=research/squiggly-routes.html>Squiggly Bicycle Routes</a></h3>
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<p>We have developed a simulation model that predicts travel
time and energy costs for a bicyclist traveling over an
arbitrary route accounting for elevation changes, bicycle
type, rider physiology, traffic signals, and yielding.</p>
</div>
</div>
<div class="row">
<h3><a href=research/balance-assist-bicycle.html>Balance Assist Bicycle for Fall Reduction</a></h3>
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<title> Squiggly Bicycle Routes | Bicycle Laboratorium
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<meta name="description" content="Direct and squiggly routes have time and energy costs for bicyclists. Description Bicyclists choose routes at least partially based on the travel time and the energy required to traverse the route [Winters2010]. Grade changes, wind, stop signs, traffic signal timing, rough pavement, undulations, etc. all contribute to the time and …">


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<h1 class="title"><a href="https://mechmotum.github.io/">Bicycle Laboratorium</a></h1>
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<h1> Squiggly Bicycle Routes
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<div class="col-sm-4">
<img style="width:100%;" src="https://objects-us-east-1.dream.io/mechmotum/squiggly-400x400.png" />
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<h2>Summary</h2>
<p>We have developed a simulation model that predicts travel
time and energy costs for a bicyclist traveling over an
arbitrary route accounting for elevation changes, bicycle
type, rider physiology, traffic signals, and yielding.</p>
</div>
</div>
<table class="table">
<tr>
<td><strong>Theme</strong></td>
<td>Bicycle Engineering</td>
<td><strong>Current Researchers</strong></td>
<td></td>
</tr>
<tr>
<td><strong>Last Worked On</strong></td>
<td>October 2024</td>
<td><strong>Past Researchers</strong></td>
<td>Sietse Soethout</td>
</tr>
<tr>
<td></td>
<td></td>
<td><strong>Collaborators</strong></td>
<td>Ted Beuhler, Mont Hubbard</td>
</tr>
</table>
<div class="figure align-center">
<img alt="" src="https://objects-us-east-1.dream.io/mechmotum/direct-vs-squiggly.png" style="width: 600px;" />
<p class="caption">Direct and squiggly routes have time and energy costs for bicyclists.</p>
</div>
<div class="section" id="description">
<h2>Description</h2>
<p>Bicyclists choose routes at least partially based on the travel time and the
energy required to traverse the route <a class="citation-reference" href="#winters2010" id="citation-reference-1">[Winters2010]</a>. Grade changes, wind, stop
signs, traffic signal timing, rough pavement, undulations, etc. all contribute
to the time and energy costs <a class="citation-reference" href="#broach2012" id="citation-reference-2">[Broach2012]</a>. Urban planners and civil engineers
design infrastructure and routes for bicyclists that have specific time and
energy costs associated with them. In fact, automobile routes and
infrastructure often have more preferable time and energy costs than the
parallel bicycle routes and infrastructure. These bicycle routes are quite
squiggly and are not optimizing the convenience of the bicyclists over the
automobile drive. Using simple physics-based simulations, existing and future
routes and infrastructure designs can be evaluated for time and energy costs.
This puts a clear quantitative numbers to important aspects of the convenience
of bicycling.</p>
</div>
<div class="section" id="products">
<h2>Products</h2>
<p>Theses</p>
<ul class="simple">
<li>S. S. Soethout, &quot;A dynamic utility cycling model for energy and time
expenditure calculation of a population of cyclists,&quot; Delft University of
Technology, Delft, The Netherlands, 2024.
<a class="reference external" href="https://resolver.tudelft.nl/uuid:ae45c43e-8eb1-4256-b7c2-e290f1260def">https://resolver.tudelft.nl/uuid:ae45c43e-8eb1-4256-b7c2-e290f1260def</a></li>
</ul>
<p>Presentations</p>
<ul class="simple">
<li><a class="reference external" href="https://tinyurl.com/squiggly-cosmos2019">2019 Squiggly Routes COSMOS Workshop Slides</a></li>
<li><a class="reference external" href="https://docs.google.com/presentation/d/e/2PACX-1vQtgEHSrHu0HobIaReFllvckTnCiYCkpZS-kqQx5jhJXQu3nz907JDoO3UGckoiT5_1nAFsW6K0fEtq/pub?start=false&amp;loop=false&amp;delayms=3000">2012 Velocity Presentation Slides</a></li>
</ul>
<p>Software</p>
<ul class="simple">
<li>Software from the 2012 work: <a class="reference external" href="https://github.com/moorepants/EfficientRoutes">https://github.com/moorepants/EfficientRoutes</a></li>
</ul>
</div>
<div class="section" id="media">
<h2>Media</h2>
<p>The following video shows a single simulation along a route in The Hague, The
Netherlands:</p>
<center>
<video width="800px" controls>
<source src="https://objects-us-east-1.dream.io/mechmotum/hs_noi_tunnel_single.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
</center><p>The next video shows a population of cyclists riding the route:</p>
<center>
<video width="800px" controls>
<source src="https://objects-us-east-1.dream.io/mechmotum/all_animation_hs_noi_normal_all_fast.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
</center></div>
<div class="section" id="references">
<h2>References</h2>
<table class="docutils citation" frame="void" id="winters2010" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#citation-reference-1">[Winters2010]</a></td><td>M. Winters, K. Teschke, M. Grant, E. M. Setton, and M. Brauer,
&quot;How Far Out of the Way Will We Travel?: Built Environment Influences on
Route Selection for Bicycle and Car Travel,&quot; Transportation Research Record:
Journal of the Transportation Research Board, vol. 2190, no. 1, pp. 1–10,
Jan. 2010, doi: 10.3141/2190-01.</td></tr>
</tbody>
</table>
<table class="docutils citation" frame="void" id="broach2012" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#citation-reference-2">[Broach2012]</a></td><td>J. Broach, J. Dill, and J. Gliebe, &quot;Where do cyclists ride? A
route choice model developed with revealed preference GPS data,&quot;
Transportation Research Part A: Policy and Practice, vol. 46, no. 10, pp.
1730–1740, Dec. 2012, doi: 10.1016/j.tra.2012.07.005.</td></tr>
</tbody>
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