{"id":1514,"date":"2021-11-16T09:16:50","date_gmt":"2021-11-16T09:16:50","guid":{"rendered":"https:\/\/open-traffic.epfl.ch\/?p=1514"},"modified":"2021-11-16T09:20:20","modified_gmt":"2021-11-16T09:20:20","slug":"empirical-investigation-of-the-emission-macroscopic-fundamental-diagram","status":"publish","type":"post","link":"https:\/\/open-traffic.epfl.ch\/index.php\/2021\/11\/16\/empirical-investigation-of-the-emission-macroscopic-fundamental-diagram\/","title":{"rendered":"Empirical investigation of the emission-macroscopic fundamental diagram"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"507\" src=\"https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/Screenshot-2021-11-16-at-09.37.21-1024x507.png\" alt=\"\" class=\"wp-image-1515\" srcset=\"https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/Screenshot-2021-11-16-at-09.37.21-1024x507.png 1024w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/Screenshot-2021-11-16-at-09.37.21-300x148.png 300w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/Screenshot-2021-11-16-at-09.37.21-768x380.png 768w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/Screenshot-2021-11-16-at-09.37.21-370x183.png 370w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/Screenshot-2021-11-16-at-09.37.21-760x376.png 760w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/Screenshot-2021-11-16-at-09.37.21-740x366.png 740w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/Screenshot-2021-11-16-at-09.37.21.png 1338w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A new paper was published in Transportation Research Part D: Transport and Environment entitled &#8220;Empirical investigation of the emission-macroscopic fundamental diagram co-authored by LUTS members and Prof. Gonzales from University of Massachussets Amherts, USA.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Highlights<\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>We analyse vehicle emissions in a multi-modal urban area using the pNEUMA dataset.<\/li><li>EPA\u2019s microscopic emission model, project level MOVES is implemented.<\/li><li>We investigate aggregated relations between emissions and congestion patterns.<\/li><li>The macroscopic fundamental diagram (MFD) is extended to the emissions-MFD (e-MFD).<\/li><li>The spatiotemporal distribution of vehicle emissions is revealed in high detail.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Abstract<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Vehicle emissions are a major contributor of air pollution in urban areas, with severe consequences for public health and the environment. This paper focuses on analyzing vehicle emissions in a multimodal urban context to better understand its determinants and investigate relations between emissions and congestion patterns. Thousands of naturalistic trajectories collected with a swarm of drones during the pNEUMA experiment are analyzed and EPA\u2019s microscopic emission model, project level MOVES, is implemented to estimate vehicular emissions. The method is developed and illustrated with a CO<sub>2<\/sub>&nbsp;analysis. The results empirically show the aggregated relationships between congestion and vehicular emissions, while accounting for the individual characteristics of each trajectory. These systematic relationships on a network scale with the use of empirical data, allow us to extend the macroscopic fundamental diagram (MFD) to the emissions-MFD (e-MFD). The spatiotemporal distribution of emissions is also studied, highlighting areas with high concentration over the urban area.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Since everyone should know how important it is to leave their car at home, find the link to the open access article <a href=\"https:\/\/doi.org\/10.1016\/j.trd.2021.103090\">here<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"846\" src=\"https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-1024x846.jpg\" alt=\"\" class=\"wp-image-1518\" srcset=\"https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-1024x846.jpg 1024w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-300x248.jpg 300w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-768x635.jpg 768w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-1536x1269.jpg 1536w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-2048x1692.jpg 2048w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-370x306.jpg 370w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-760x628.jpg 760w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-1520x1256.jpg 1520w, https:\/\/open-traffic.epfl.ch\/wp-content\/uploads\/2021\/11\/1-s2.0-S1361920921003862-gr9_lrg-740x612.jpg 740w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>3D e-MFD illustrating accumulation versus speed versus aggregated emissions per distance travelled.<\/figcaption><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A new paper was published in Transportation Research Part D: Transport and Environment entitled &#8220;Empirical investigation of the emission-macroscopic fundamental diagram co-authored by LUTS members and Prof. Gonzales from University&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[72],"tags":[86,74,85,84,83,73],"class_list":["post-1514","post","type-post","status-publish","format-standard","hentry","category-publications","tag-emissions","tag-journal","tag-mfd","tag-multi-modal","tag-openscience","tag-publication"],"_links":{"self":[{"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/posts\/1514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/comments?post=1514"}],"version-history":[{"count":2,"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/posts\/1514\/revisions"}],"predecessor-version":[{"id":1519,"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/posts\/1514\/revisions\/1519"}],"wp:attachment":[{"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/media?parent=1514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/categories?post=1514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/open-traffic.epfl.ch\/index.php\/wp-json\/wp\/v2\/tags?post=1514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}