<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-5609</journal-id>
<journal-title><![CDATA[Ingeniería e Investigación]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. Investig.]]></abbrev-journal-title>
<issn>0120-5609</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería, Universidad Nacional de Colombia.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-56092021000200101</article-id>
<article-id pub-id-type="doi">10.15446/ing.investig.v41n2.83114</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Multimetric Analysis of a Simulated Mixed Traffic of Motorcycles and Automobiles: Flow, Energy, CO2, and Costs]]></article-title>
<article-title xml:lang="es"><![CDATA[Análisis multimétrico de un tráfico mixto simulado de motocicletas y automóviles: flujo, energía, CO2 y costos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Magnani]]></surname>
<given-names><![CDATA[Fábio Santana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garcia Neto]]></surname>
<given-names><![CDATA[Paulo D'Ávila]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cavalcanti de Araújo]]></surname>
<given-names><![CDATA[Fernando Wesley]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hora]]></surname>
<given-names><![CDATA[Alcides Luiz dos Anjos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valença]]></surname>
<given-names><![CDATA[Daniel Arraes de Alencar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,UFPE  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,IFPE  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,UFPE  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,UFS  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,UFPE  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>41</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-56092021000200101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-56092021000200101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-56092021000200101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The fleet of developing countries consists of motorcycles and cars. This heterogeneous traffic condition has its advantages and disadvantages, which results in conflicting points of view (e.g., motorcyclists enjoying a higher mobility while car drivers resent their decreased speed). In this paper, we corroborated the notion that traffic evaluation depends on the chosen metric (e.g., vehicle flow, fuel consumption, monthly costs) and the point of view (driver, rider, and policy makers). To this effect, we studied a mixed traffic condition, considering that the vehicle performance is affected by three scales: engine, vehicle, and traffic. We modeled the engine using empirical correlations of power and energy efficiency, the vehicle based on a balance of propulsive and resistive forces, and traffic with a cellular automata model. We simulated 189 traffic conditions and evaluated vehicle flow, average energy consumption, total CO2 emission of the road, and monthly costs. We also discussed the results from the point of view of the driver, rider, and society. We concluded that the optimal condition depends both on the choice of metric and point of view, and that is not appropriate to use results from homogeneous traffic to analyze heterogeneous traffic conditions, even if both scenarios present the same total vehicle flow.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La flota de los países en vías de desarrollo está compuesta por motocicletas y automóviles. Esta condición heterogénea en el tráfico presenta ventajas y desventajas, lo que resulta en puntos de vista conflictivos (por ejemplo, los motociclistas que disfrutan de su mayor movilidad mientras que los conductores de automóviles se resienten con su velocidad disminuida). En este artículo corroboramos la idea de que la evaluación del tráfico depende de la métrica escogida (por ejemplo, flujo de vehículos, consumo de combustible, costos mensuales) y del punto de vista (conductor, motociclista y responsables de formular políticas). Para ello, estudiamos una condición de tráfico mixto, considerando que el rendimiento del vehículo se ve afectado por tres escalas: motor, vehículo y tráfico. Modelamos el motor usando correlaciones empíricas de potencia y eficiencia energética, la del vehículo a través de un equilibrio de fuerzas propulsoras y resistivas, y la del tráfico mediante un modelo de autómata celular. Simulamos 189 condiciones de tráfico y evaluamos el flujo de vehículos, el consumo de energía promedio, la emisión total de CO2 de la vía y los costos mensuales. También discutimos los resultados desde el punto de vista del conductor, el motociclista y la sociedad. Llegamos a la conclusión de que la condición óptima depende tanto de la elección de la métrica como del punto de vista, además de que no es apropiado usar los resultados del tráfico homogéneo para analizar condiciones de tráfico heterogéneo, incluso si ambos escenarios presentan el mismo flujo total de vehículos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[car]]></kwd>
<kwd lng="en"><![CDATA[motorcycle]]></kwd>
<kwd lng="en"><![CDATA[traffic]]></kwd>
<kwd lng="en"><![CDATA[CO2]]></kwd>
<kwd lng="en"><![CDATA[costs]]></kwd>
<kwd lng="en"><![CDATA[cellular automata]]></kwd>
<kwd lng="es"><![CDATA[automóviles]]></kwd>
<kwd lng="es"><![CDATA[motocicletas]]></kwd>
<kwd lng="es"><![CDATA[tráfico]]></kwd>
<kwd lng="es"><![CDATA[CO2]]></kwd>
<kwd lng="es"><![CDATA[costos]]></kwd>
<kwd lng="es"><![CDATA[autómata celular]]></kwd>
</kwd-group>
</article-meta>
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