{"id":2874,"date":"2023-01-10T05:00:00","date_gmt":"2023-01-10T04:00:00","guid":{"rendered":"https:\/\/ingenius.ecoledesponts.fr\/?p=2874"},"modified":"2025-07-29T14:57:30","modified_gmt":"2025-07-29T12:57:30","slug":"ridesharing-a-sustainable-transport-method","status":"publish","type":"post","link":"https:\/\/ingenius.ecoledesponts.fr\/en\/articles\/ridesharing-a-sustainable-transport-method\/","title":{"rendered":"Ridesharing \u2013 a sustainable transport method?"},"content":{"rendered":"\n\n\n<figure class=\"wp-block-image alignwide size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"684\" src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1024x684.jpeg\" alt=\"\" class=\"wp-image-1787\" srcset=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1024x684.jpeg 1024w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-300x200.jpeg 300w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-768x513.jpeg 768w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1920x1283.jpeg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>According to ADEME, the French Agency for Ecological Transition, shared journeys in private vehicles represent only 3% of commutes in France on average (2016), and this method of getting around has been in declining near-continuously since the 1970s. This low uptake of ridesharing is partly explained by the significant organizational effort it requires daily, and the time-consuming but necessary detours to pick up \u201ccar sharers\u201d. Nevertheless, the environmental imperatives \u2013 which include improving air quality, combating climate change and the recent sharp rise in energy prices \u2013 are generating renewed interest in this mode of travel. So ridesharing, one of several new solutions to mobility issues, has received special attention in discussions about the French Mobility Orientation Law (loi d\u2019orientation des mobilit\u00e9s).<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-red-color has-text-color\">Practical, economical and eco-friendly?<\/h2>\n\n\n\n<p>If more people switched from solo driving to ridesharing, the effect would be to reduce the number of vehicles on the roads, and consequently alleviate congestion and pollution. According to AirParif (an association that monitors air quality in \u00cele-de-France), road traffic currently produces 32% of greenhouse gas emissions in the greater Paris area. Reducing the number of vehicles on the roads would therefore naturally reduce this figure. Ridesharing would also alleviate households\u2019 travel expenses, which is all the more attractive in the context of high energy prices. Lastly, it would offer another transport option for people without a private vehicle.Therefore, increased ridesharing would improve the conditions associated with car travel insofar as it reduces the journey cost for each person on board (the people who share a journey share the costs) and helps to cut congestion. However, paradoxically, it also generates a range of \u201crebound effects\u201d that significantly weaken the anticipated decline in private vehicle use.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-red-color has-text-color\"><strong>Watered-down environmental benefits?<\/strong><\/h2>\n\n\n\n<p>The <a href=\"https:\/\/www.lvmt.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">research laboratory on Transport, Mobility and Cities<\/a> (<em>Laboratoire Ville Mobilit\u00e9 Transport,<\/em> LVMT), in partnership with the <a href=\"https:\/\/www.centre-cired.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">International Center for Research on the Environment and Development<\/a> (CIRED), is currently conducting modeling aimed at measuring these rebound effects. This work is based on the MODUS model (examining commuting patterns), developed by the Regional and Interdepartmental Directorate for Planning and Transport Equipment in \u00cele-de-France (DRIEAT-IF) and adapted to study ridesharing strategies. The modeling suggests that by making car use both cheaper (through cost sharing) and faster (thanks to less road congestion), increased ridesharing activity could trigger a modal shift away from public transport and sustainable transport, and towards cars. It could also nudge people to travel longer distances by car, and\/or to relocate further out of urban centers in order to take advantage of lower property prices. Even more strikingly, the modeling highlights the magnitude of these rebound effects, which would diminish \u2013 by 50% to 75% \u2013 the environmental benefits initially expected as a result of more ridesharing, i.e. reductions in CO<sub>2<\/sub> emissions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How do rebound effects alter the impact of ridesharing on CO<sub>2<\/sub> emissions?<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"727\" src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1-1024x727.png\" alt=\"\" class=\"wp-image-2945\" style=\"width:656px;height:466px\" srcset=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1-1024x727.png 1024w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1-300x213.png 300w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1-768x545.png 768w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1.png 1397w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>\u00a9<\/strong> Vincent Vigui\u00e9, Nicolas Coulombel, CC BY-NC-ND (source\u00a0: <a href=\"https:\/\/hal-enpc.archives-ouvertes.fr\/hal-01981292v2\" target=\"_blank\" rel=\"noreferrer noopener\">Coulombel <em>et al<\/em>., 2019<\/a>).<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-red-color has-text-color\"><strong>How can rebound effects be reduced?<\/strong><\/h2>\n\n\n\n<p>The scale of the rebound effects provides an incentive to test the effectiveness of different accompanying measures, with a view to increasing the success of strategies promoting ridesharing, in terms of the carbon emissions reductions they achieve.<\/p>\n\n\n\n<p>The modeling reveals that it is counter-productive to introduce ridesharing strategies alongside an improved public transport offer, because the two measures then compete against each other to attract service users.&nbsp; Conversely, reducing road capacity would present strong synergies with ridesharing, as it would limit the rebound effects that could arise due to lower levels of congestion.<\/p>\n\n\n\n<p>According to these results, ridesharing in urban areas could only deliver a significant reduction in CO<sub>2<\/sub> emissions if accompanying measures are adopted to minimize its rebound effects. At this exploratory stage of the study, measures linked to road capacity seem to offer the best way to maximize the environmental benefits associated with ridesharing. For example, current road lanes could be converted for use exclusively by public transport, ridesharing and other sustainable transport modes, such as the \u201chigh-occupancy vehicle (HOV) lanes\u201d introduced a number of years ago in North America. This concept is already being applied in several French cities, examples being Lyon and Paris.<\/p>\n\n\n\n<p>More generally, this modeling work illustrates how measures intended to reduce the environmental impact of human activity can have complex and unexpected effects. Therefore, to maximize the likelihood of attaining the set objectives for reducing emissions, more global consideration of these measures is needed.<\/p>\n\n\n\n<p><strong>Text adapted from an article published in&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/ecoledesponts.fr\/sites\/ecoledesponts.fr\/files\/documents\/cdp_6_numerique_0.pdf\" target=\"_blank\">Le Cahier des Ponts n\u00b06<\/a>, Les mobilit\u00e9s, August 2022.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>According to ADEME, the French Agency for Ecological Transition, shared journeys in private vehicles represent only 3% of commutes in [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":1787,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_related_content_post":[],"_related_content_subject":[937,692],"_related_content_author":[2950],"_related_content_category":[1720,1716],"_related_content_folder":[4200],"_excerpt":"In light of the environmental imperatives, traffic congestion and the hike in energy prices, a number of projects and measures have been applied in France, particularly in the greater Paris area (\u00cele-de-France) to encourage and develop ridesharing activity. To maximize the environmental benefits, car sharing must be accompanied by certain measures that constrain other outcomes.","_duration":3,"_manual_duration":false,"footnotes":""},"article-types":[27],"class_list":["post-2874","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","article-types-folder"],"has_blocks":true,"block_data":[{"blockName":"enpc\/excerpt","attrs":{"lock":[],"metadata":[],"className":"","style":""},"innerBlocks":[],"innerHTML":"","innerContent":[],"rendered":""},{"blockName":"core\/image","attrs":{"id":1787,"sizeSlug":"large","linkDestination":"none","align":"wide","blob":"","url":"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1024x684.jpeg","alt":"","caption":null,"lightbox":[],"title":"","href":"","rel":"","linkClass":"","width":"","height":"","aspectRatio":"","scale":"","linkTarget":"","lock":[],"metadata":[],"className":"wp-block-image alignwide size-large","style":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<figure class=\"wp-block-image alignwide size-large\"><img src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1024x684.jpeg\" alt=\"\" class=\"wp-image-1787\"\/><\/figure>\n","innerContent":["\n<figure class=\"wp-block-image alignwide size-large\"><img src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1024x684.jpeg\" alt=\"\" class=\"wp-image-1787\"\/><\/figure>\n"],"rendered":"\n<figure class=\"wp-block-image alignwide size-large\"><img src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1024x684.jpeg\" alt=\"\" class=\"wp-image-1787\"\/><\/figure>\n"},{"blockName":"core\/paragraph","attrs":{"align":"","content":null,"dropCap":false,"placeholder":"","direction":"","lock":[],"metadata":[],"className":"","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<p>According to ADEME, the French Agency for Ecological Transition, shared journeys in private vehicles represent only 3% of commutes in France on average (2016), and this method of getting around has been in declining near-continuously since the 1970s. This low uptake of ridesharing is partly explained by the significant organizational effort it requires daily, and the time-consuming but necessary detours to pick up \u201ccar sharers\u201d. Nevertheless, the environmental imperatives \u2013 which include improving air quality, combating climate change and the recent sharp rise in energy prices \u2013 are generating renewed interest in this mode of travel. So ridesharing, one of several new solutions to mobility issues, has received special attention in discussions about the French Mobility Orientation Law (loi d\u2019orientation des mobilit\u00e9s).<\/p>\n","innerContent":["\n<p>According to ADEME, the French Agency for Ecological Transition, shared journeys in private vehicles represent only 3% of commutes in France on average (2016), and this method of getting around has been in declining near-continuously since the 1970s. This low uptake of ridesharing is partly explained by the significant organizational effort it requires daily, and the time-consuming but necessary detours to pick up \u201ccar sharers\u201d. Nevertheless, the environmental imperatives \u2013 which include improving air quality, combating climate change and the recent sharp rise in energy prices \u2013 are generating renewed interest in this mode of travel. So ridesharing, one of several new solutions to mobility issues, has received special attention in discussions about the French Mobility Orientation Law (loi d\u2019orientation des mobilit\u00e9s).<\/p>\n"],"rendered":"\n<p>According to ADEME, the French Agency for Ecological Transition, shared journeys in private vehicles represent only 3% of commutes in France on average (2016), and this method of getting around has been in declining near-continuously since the 1970s. This low uptake of ridesharing is partly explained by the significant organizational effort it requires daily, and the time-consuming but necessary detours to pick up \u201ccar sharers\u201d. Nevertheless, the environmental imperatives \u2013 which include improving air quality, combating climate change and the recent sharp rise in energy prices \u2013 are generating renewed interest in this mode of travel. So ridesharing, one of several new solutions to mobility issues, has received special attention in discussions about the French Mobility Orientation Law (loi d\u2019orientation des mobilit\u00e9s).<\/p>\n"},{"blockName":"core\/heading","attrs":{"textColor":"red","textAlign":"","content":null,"level":2,"levelOptions":[],"placeholder":"","lock":[],"metadata":[],"align":"","className":"wp-block-heading has-red-color has-text-color","style":"","backgroundColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<h2 class=\"wp-block-heading has-red-color has-text-color\">Practical, economical and eco-friendly?<\/h2>\n","innerContent":["\n<h2 class=\"wp-block-heading has-red-color has-text-color\">Practical, economical and eco-friendly?<\/h2>\n"],"rendered":"\n<h2 class=\"wp-block-heading has-red-color has-text-color\">Practical, economical and eco-friendly?<\/h2>\n"},{"blockName":"core\/paragraph","attrs":{"align":"","content":null,"dropCap":false,"placeholder":"","direction":"","lock":[],"metadata":[],"className":"","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<p>If more people switched from solo driving to ridesharing, the effect would be to reduce the number of vehicles on the roads, and consequently alleviate congestion and pollution. According to AirParif (an association that monitors air quality in \u00cele-de-France), road traffic currently produces 32% of greenhouse gas emissions in the greater Paris area. Reducing the number of vehicles on the roads would therefore naturally reduce this figure. Ridesharing would also alleviate households\u2019 travel expenses, which is all the more attractive in the context of high energy prices. Lastly, it would offer another transport option for people without a private vehicle.Therefore, increased ridesharing would improve the conditions associated with car travel insofar as it reduces the journey cost for each person on board (the people who share a journey share the costs) and helps to cut congestion. However, paradoxically, it also generates a range of \u201crebound effects\u201d that significantly weaken the anticipated decline in private vehicle use.<\/p>\n","innerContent":["\n<p>If more people switched from solo driving to ridesharing, the effect would be to reduce the number of vehicles on the roads, and consequently alleviate congestion and pollution. According to AirParif (an association that monitors air quality in \u00cele-de-France), road traffic currently produces 32% of greenhouse gas emissions in the greater Paris area. Reducing the number of vehicles on the roads would therefore naturally reduce this figure. Ridesharing would also alleviate households\u2019 travel expenses, which is all the more attractive in the context of high energy prices. Lastly, it would offer another transport option for people without a private vehicle.Therefore, increased ridesharing would improve the conditions associated with car travel insofar as it reduces the journey cost for each person on board (the people who share a journey share the costs) and helps to cut congestion. However, paradoxically, it also generates a range of \u201crebound effects\u201d that significantly weaken the anticipated decline in private vehicle use.<\/p>\n"],"rendered":"\n<p>If more people switched from solo driving to ridesharing, the effect would be to reduce the number of vehicles on the roads, and consequently alleviate congestion and pollution. According to AirParif (an association that monitors air quality in \u00cele-de-France), road traffic currently produces 32% of greenhouse gas emissions in the greater Paris area. Reducing the number of vehicles on the roads would therefore naturally reduce this figure. Ridesharing would also alleviate households\u2019 travel expenses, which is all the more attractive in the context of high energy prices. Lastly, it would offer another transport option for people without a private vehicle.Therefore, increased ridesharing would improve the conditions associated with car travel insofar as it reduces the journey cost for each person on board (the people who share a journey share the costs) and helps to cut congestion. However, paradoxically, it also generates a range of \u201crebound effects\u201d that significantly weaken the anticipated decline in private vehicle use.<\/p>\n"},{"blockName":"core\/heading","attrs":{"textColor":"red","textAlign":"","content":null,"level":2,"levelOptions":[],"placeholder":"","lock":[],"metadata":[],"align":"","className":"wp-block-heading has-red-color has-text-color","style":"","backgroundColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<h2 class=\"wp-block-heading has-red-color has-text-color\"><strong>Watered-down environmental benefits?<\/strong><\/h2>\n","innerContent":["\n<h2 class=\"wp-block-heading has-red-color has-text-color\"><strong>Watered-down environmental benefits?<\/strong><\/h2>\n"],"rendered":"\n<h2 class=\"wp-block-heading has-red-color has-text-color\"><strong>Watered-down environmental benefits?<\/strong><\/h2>\n"},{"blockName":"core\/paragraph","attrs":{"align":"","content":null,"dropCap":false,"placeholder":"","direction":"","lock":[],"metadata":[],"className":"","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<p>The <a href=\"https:\/\/www.lvmt.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">research laboratory on Transport, Mobility and Cities<\/a> (<em>Laboratoire Ville Mobilit\u00e9 Transport,<\/em> LVMT), in partnership with the <a href=\"https:\/\/www.centre-cired.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">International Center for Research on the Environment and Development<\/a> (CIRED), is currently conducting modeling aimed at measuring these rebound effects. This work is based on the MODUS model (examining commuting patterns), developed by the Regional and Interdepartmental Directorate for Planning and Transport Equipment in \u00cele-de-France (DRIEAT-IF) and adapted to study ridesharing strategies. The modeling suggests that by making car use both cheaper (through cost sharing) and faster (thanks to less road congestion), increased ridesharing activity could trigger a modal shift away from public transport and sustainable transport, and towards cars. It could also nudge people to travel longer distances by car, and\/or to relocate further out of urban centers in order to take advantage of lower property prices. Even more strikingly, the modeling highlights the magnitude of these rebound effects, which would diminish \u2013 by 50% to 75% \u2013 the environmental benefits initially expected as a result of more ridesharing, i.e. reductions in CO<sub>2<\/sub> emissions.<\/p>\n","innerContent":["\n<p>The <a href=\"https:\/\/www.lvmt.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">research laboratory on Transport, Mobility and Cities<\/a> (<em>Laboratoire Ville Mobilit\u00e9 Transport,<\/em> LVMT), in partnership with the <a href=\"https:\/\/www.centre-cired.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">International Center for Research on the Environment and Development<\/a> (CIRED), is currently conducting modeling aimed at measuring these rebound effects. This work is based on the MODUS model (examining commuting patterns), developed by the Regional and Interdepartmental Directorate for Planning and Transport Equipment in \u00cele-de-France (DRIEAT-IF) and adapted to study ridesharing strategies. The modeling suggests that by making car use both cheaper (through cost sharing) and faster (thanks to less road congestion), increased ridesharing activity could trigger a modal shift away from public transport and sustainable transport, and towards cars. It could also nudge people to travel longer distances by car, and\/or to relocate further out of urban centers in order to take advantage of lower property prices. Even more strikingly, the modeling highlights the magnitude of these rebound effects, which would diminish \u2013 by 50% to 75% \u2013 the environmental benefits initially expected as a result of more ridesharing, i.e. reductions in CO<sub>2<\/sub> emissions.<\/p>\n"],"rendered":"\n<p>The <a href=\"https:\/\/www.lvmt.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">research laboratory on Transport, Mobility and Cities<\/a> (<em>Laboratoire Ville Mobilit\u00e9 Transport,<\/em> LVMT), in partnership with the <a href=\"https:\/\/www.centre-cired.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">International Center for Research on the Environment and Development<\/a> (CIRED), is currently conducting modeling aimed at measuring these rebound effects. This work is based on the MODUS model (examining commuting patterns), developed by the Regional and Interdepartmental Directorate for Planning and Transport Equipment in \u00cele-de-France (DRIEAT-IF) and adapted to study ridesharing strategies. The modeling suggests that by making car use both cheaper (through cost sharing) and faster (thanks to less road congestion), increased ridesharing activity could trigger a modal shift away from public transport and sustainable transport, and towards cars. It could also nudge people to travel longer distances by car, and\/or to relocate further out of urban centers in order to take advantage of lower property prices. Even more strikingly, the modeling highlights the magnitude of these rebound effects, which would diminish \u2013 by 50% to 75% \u2013 the environmental benefits initially expected as a result of more ridesharing, i.e. reductions in CO<sub>2<\/sub> emissions.<\/p>\n"},{"blockName":"core\/heading","attrs":{"level":3,"textAlign":"","content":null,"levelOptions":[],"placeholder":"","lock":[],"metadata":[],"align":"","className":"wp-block-heading","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<h3 class=\"wp-block-heading\">How do rebound effects alter the impact of ridesharing on CO<sub>2<\/sub> emissions?<\/h3>\n","innerContent":["\n<h3 class=\"wp-block-heading\">How do rebound effects alter the impact of ridesharing on CO<sub>2<\/sub> emissions?<\/h3>\n"],"rendered":"\n<h3 class=\"wp-block-heading\">How do rebound effects alter the impact of ridesharing on CO<sub>2<\/sub> emissions?<\/h3>\n"},{"blockName":"core\/image","attrs":{"id":2945,"width":"656px","height":"466px","sizeSlug":"large","linkDestination":"media","align":"center","blob":"","url":"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1-1024x727.png","alt":"","caption":null,"lightbox":[],"title":"","href":"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1.png","rel":"noreferrer noopener","linkClass":"","aspectRatio":"","scale":"","linkTarget":"_blank","lock":[],"metadata":[],"className":"wp-block-image aligncenter size-large is-resized","style":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1-1024x727.png\" alt=\"\" class=\"wp-image-2945\" style=\"width:656px;height:466px\"\/><\/a><figcaption class=\"wp-element-caption\"><strong>\u00a9<\/strong> Vincent Vigui\u00e9, Nicolas Coulombel, CC BY-NC-ND (source\u00a0: <a href=\"https:\/\/hal-enpc.archives-ouvertes.fr\/hal-01981292v2\" target=\"_blank\" rel=\"noreferrer noopener\">Coulombel <em>et al<\/em>., 2019<\/a>).<\/figcaption><\/figure>\n","innerContent":["\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1-1024x727.png\" alt=\"\" class=\"wp-image-2945\" style=\"width:656px;height:466px\"\/><\/a><figcaption class=\"wp-element-caption\"><strong>\u00a9<\/strong> Vincent Vigui\u00e9, Nicolas Coulombel, CC BY-NC-ND (source\u00a0: <a href=\"https:\/\/hal-enpc.archives-ouvertes.fr\/hal-01981292v2\" target=\"_blank\" rel=\"noreferrer noopener\">Coulombel <em>et al<\/em>., 2019<\/a>).<\/figcaption><\/figure>\n"],"rendered":"\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1.png\" target=\"_blank\" rel=\"noreferrer noopener\"><img src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2023\/01\/How-do-rebound-effects-alter-the-impact-of-ridesharing-on-CO2-emissions-1-1024x727.png\" alt=\"\" class=\"wp-image-2945\" style=\"width:656px;height:466px\"\/><\/a><figcaption class=\"wp-element-caption\"><strong>\u00a9<\/strong> Vincent Vigui\u00e9, Nicolas Coulombel, CC BY-NC-ND (source\u00a0: <a href=\"https:\/\/hal-enpc.archives-ouvertes.fr\/hal-01981292v2\" target=\"_blank\" rel=\"noreferrer noopener\">Coulombel <em>et al<\/em>., 2019<\/a>).<\/figcaption><\/figure>\n"},{"blockName":"core\/heading","attrs":{"textColor":"red","textAlign":"","content":null,"level":2,"levelOptions":[],"placeholder":"","lock":[],"metadata":[],"align":"","className":"wp-block-heading has-red-color has-text-color","style":"","backgroundColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<h2 class=\"wp-block-heading has-red-color has-text-color\"><strong>How can rebound effects be reduced?<\/strong><\/h2>\n","innerContent":["\n<h2 class=\"wp-block-heading has-red-color has-text-color\"><strong>How can rebound effects be reduced?<\/strong><\/h2>\n"],"rendered":"\n<h2 class=\"wp-block-heading has-red-color has-text-color\"><strong>How can rebound effects be reduced?<\/strong><\/h2>\n"},{"blockName":"core\/paragraph","attrs":{"align":"","content":null,"dropCap":false,"placeholder":"","direction":"","lock":[],"metadata":[],"className":"","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<p>The scale of the rebound effects provides an incentive to test the effectiveness of different accompanying measures, with a view to increasing the success of strategies promoting ridesharing, in terms of the carbon emissions reductions they achieve.<\/p>\n","innerContent":["\n<p>The scale of the rebound effects provides an incentive to test the effectiveness of different accompanying measures, with a view to increasing the success of strategies promoting ridesharing, in terms of the carbon emissions reductions they achieve.<\/p>\n"],"rendered":"\n<p>The scale of the rebound effects provides an incentive to test the effectiveness of different accompanying measures, with a view to increasing the success of strategies promoting ridesharing, in terms of the carbon emissions reductions they achieve.<\/p>\n"},{"blockName":"core\/paragraph","attrs":{"align":"","content":null,"dropCap":false,"placeholder":"","direction":"","lock":[],"metadata":[],"className":"","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<p>The modeling reveals that it is counter-productive to introduce ridesharing strategies alongside an improved public transport offer, because the two measures then compete against each other to attract service users.&nbsp; Conversely, reducing road capacity would present strong synergies with ridesharing, as it would limit the rebound effects that could arise due to lower levels of congestion.<\/p>\n","innerContent":["\n<p>The modeling reveals that it is counter-productive to introduce ridesharing strategies alongside an improved public transport offer, because the two measures then compete against each other to attract service users.&nbsp; Conversely, reducing road capacity would present strong synergies with ridesharing, as it would limit the rebound effects that could arise due to lower levels of congestion.<\/p>\n"],"rendered":"\n<p>The modeling reveals that it is counter-productive to introduce ridesharing strategies alongside an improved public transport offer, because the two measures then compete against each other to attract service users.&nbsp; Conversely, reducing road capacity would present strong synergies with ridesharing, as it would limit the rebound effects that could arise due to lower levels of congestion.<\/p>\n"},{"blockName":"core\/paragraph","attrs":{"align":"","content":null,"dropCap":false,"placeholder":"","direction":"","lock":[],"metadata":[],"className":"","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<p>According to these results, ridesharing in urban areas could only deliver a significant reduction in CO<sub>2<\/sub> emissions if accompanying measures are adopted to minimize its rebound effects. At this exploratory stage of the study, measures linked to road capacity seem to offer the best way to maximize the environmental benefits associated with ridesharing. For example, current road lanes could be converted for use exclusively by public transport, ridesharing and other sustainable transport modes, such as the \u201chigh-occupancy vehicle (HOV) lanes\u201d introduced a number of years ago in North America. This concept is already being applied in several French cities, examples being Lyon and Paris.<\/p>\n","innerContent":["\n<p>According to these results, ridesharing in urban areas could only deliver a significant reduction in CO<sub>2<\/sub> emissions if accompanying measures are adopted to minimize its rebound effects. At this exploratory stage of the study, measures linked to road capacity seem to offer the best way to maximize the environmental benefits associated with ridesharing. For example, current road lanes could be converted for use exclusively by public transport, ridesharing and other sustainable transport modes, such as the \u201chigh-occupancy vehicle (HOV) lanes\u201d introduced a number of years ago in North America. This concept is already being applied in several French cities, examples being Lyon and Paris.<\/p>\n"],"rendered":"\n<p>According to these results, ridesharing in urban areas could only deliver a significant reduction in CO<sub>2<\/sub> emissions if accompanying measures are adopted to minimize its rebound effects. At this exploratory stage of the study, measures linked to road capacity seem to offer the best way to maximize the environmental benefits associated with ridesharing. For example, current road lanes could be converted for use exclusively by public transport, ridesharing and other sustainable transport modes, such as the \u201chigh-occupancy vehicle (HOV) lanes\u201d introduced a number of years ago in North America. This concept is already being applied in several French cities, examples being Lyon and Paris.<\/p>\n"},{"blockName":"core\/paragraph","attrs":{"align":"","content":null,"dropCap":false,"placeholder":"","direction":"","lock":[],"metadata":[],"className":"","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<p>More generally, this modeling work illustrates how measures intended to reduce the environmental impact of human activity can have complex and unexpected effects. Therefore, to maximize the likelihood of attaining the set objectives for reducing emissions, more global consideration of these measures is needed.<\/p>\n","innerContent":["\n<p>More generally, this modeling work illustrates how measures intended to reduce the environmental impact of human activity can have complex and unexpected effects. Therefore, to maximize the likelihood of attaining the set objectives for reducing emissions, more global consideration of these measures is needed.<\/p>\n"],"rendered":"\n<p>More generally, this modeling work illustrates how measures intended to reduce the environmental impact of human activity can have complex and unexpected effects. Therefore, to maximize the likelihood of attaining the set objectives for reducing emissions, more global consideration of these measures is needed.<\/p>\n"},{"blockName":"core\/paragraph","attrs":{"align":"","content":null,"dropCap":false,"placeholder":"","direction":"","lock":[],"metadata":[],"className":"","style":"","backgroundColor":"","textColor":"","gradient":"","fontSize":"","fontFamily":"","borderColor":"","anchor":""},"innerBlocks":[],"innerHTML":"\n<p><strong>Text adapted from an article published in&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/ecoledesponts.fr\/sites\/ecoledesponts.fr\/files\/documents\/cdp_6_numerique_0.pdf\" target=\"_blank\">Le Cahier des Ponts n\u00b06<\/a>, Les mobilit\u00e9s, August 2022.<\/strong><\/p>\n","innerContent":["\n<p><strong>Text adapted from an article published in&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/ecoledesponts.fr\/sites\/ecoledesponts.fr\/files\/documents\/cdp_6_numerique_0.pdf\" target=\"_blank\">Le Cahier des Ponts n\u00b06<\/a>, Les mobilit\u00e9s, August 2022.<\/strong><\/p>\n"],"rendered":"\n<p><strong>Text adapted from an article published in&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/ecoledesponts.fr\/sites\/ecoledesponts.fr\/files\/documents\/cdp_6_numerique_0.pdf\" target=\"_blank\">Le Cahier des Ponts n\u00b06<\/a>, Les mobilit\u00e9s, August 2022.<\/strong><\/p>\n"}],"seo":{"title":"Ridesharing \u2013 a sustainable transport method?"},"media":{"img":"<img width=\"2560\" height=\"1710\" src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-scaled.jpeg\" class=\"attachment-full size-full\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-scaled.jpeg 2560w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-300x200.jpeg 300w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1024x684.jpeg 1024w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-768x513.jpeg 768w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-1920x1283.jpeg 1920w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/>","src":"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/AdobeStock_218201424_Coulombel-scaled.jpeg"},"url":"\/en\/articles\/ridesharing-a-sustainable-transport-method\/","related":{"post":[],"author":[{"title":"Nicolas Coulombel","url":"\/en\/authors\/nicolas-coulombel\/","id":"2950","media":"<img width=\"60\" height=\"60\" src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Nicolas_Coulombel-60x60.png\" class=\"attachment-author-thumb size-author-thumb wp-post-image\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Nicolas_Coulombel-60x60.png 60w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Nicolas_Coulombel-150x150.png 150w\" sizes=\"auto, (max-width: 60px) 100vw, 60px\" \/>","slug":"nicolas-coulombel"}],"subject":[{"title":"Energy, Ecology &amp; Climate","url":"\/en\/subjects\/energy-ecology-climate\/","id":"937","media":"<img width=\"1920\" height=\"1080\" src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-energie.jpg\" class=\"attachment- size- wp-post-image\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-energie.jpg 1920w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-energie-300x169.jpg 300w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-energie-1024x576.jpg 1024w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-energie-768x432.jpg 768w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/>","slug":"energy-ecology-climate"},{"title":"Mobility, Transport &#038; Infrastructure","url":"\/en\/subjects\/mobility-transport-infrastructure\/","id":"692","media":"<img width=\"1920\" height=\"1080\" src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-mobilites.jpg\" class=\"attachment- size- wp-post-image\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-mobilites.jpg 1920w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-mobilites-300x169.jpg 300w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-mobilites-1024x576.jpg 1024w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/11\/Ecole-des-ponts-webmagazine-mobilites-768x432.jpg 768w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/>","slug":"mobility-transport-infrastructure"}],"category":[{"title":"Article collection","url":"\/en\/articles\/category\/dossier\/","id":"1720","media":"","slug":"dossier","_related_post_type":"folder"},{"title":"Articles","url":"\/en\/articles\/category\/articles\/","id":"1716","media":"","slug":"articles","_related_post_type":""}],"folder":[{"title":"Mobilities","url":"\/en\/folders\/mobilities\/","id":"4200","media":"<img width=\"2560\" height=\"1280\" src=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/CdP_N6_Couv-scaled.jpeg\" class=\"attachment- size- wp-post-image\" alt=\"\" decoding=\"async\" loading=\"lazy\" srcset=\"https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/CdP_N6_Couv-scaled.jpeg 2560w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/CdP_N6_Couv-300x150.jpeg 300w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/CdP_N6_Couv-1024x512.jpeg 1024w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/CdP_N6_Couv-768x384.jpeg 768w, https:\/\/ingenius.ecoledesponts.fr\/wp-content\/uploads\/2022\/08\/CdP_N6_Couv-1920x960.jpeg 1920w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/>","slug":"mobilities"}]},"translated":"https:\/\/ingenius.ecoledesponts.fr\/articles\/le-covoiturage-un-mode-de-transport-durable\/","icon":"icon-folder","duration":"3","custom_excerpt":"In light of the environmental imperatives, traffic congestion and the hike in energy prices, a number of projects and measures have been applied in France, particularly in the greater Paris area (\u00cele-de-France) to encourage and develop ridesharing activity. To maximize the environmental benefits, car sharing must be accompanied by certain measures that constrain other outcomes.","duration_type":"","_links":{"self":[{"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/posts\/2874","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/comments?post=2874"}],"version-history":[{"count":5,"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/posts\/2874\/revisions"}],"predecessor-version":[{"id":8946,"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/posts\/2874\/revisions\/8946"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/media\/1787"}],"wp:attachment":[{"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/media?parent=2874"}],"wp:term":[{"taxonomy":"article-types","embeddable":true,"href":"https:\/\/ingenius.ecoledesponts.fr\/en\/wp-json\/wp\/v2\/article-types?post=2874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}