21 January 2022
Mobilités décarbonées
In France, transportation is the activity that contributes the most to greenhouse gas emissions. It is therefore of the utmost importance to design energy-efficient vehicles today. Beyond this technological challenge, it is important to act to adapt our infrastructures, initiate new low-carbon mobility practices and rethink our economic and even legal and economic models.
The Cerema, in partnership with Construction21 and the VINCI ParisTech research environment lab of have published a collection of articles that opens up stimulating avenues of reflection and solutions for all mobility professionals and professionals involved in mobility.

Visuel ouvrage

Developed countries, including France, have equipped with transport systems for the mobility of of people and goods that meet the needs of short and long distance that meet the needs of short and long distance travel. In addition to the service provided to serve the territory, there are the service provided to serve the region, there are still many other issues to be addressed, related to the climate and energy in the region. climate and energy in a context of ecological ecological transition.

From a social point of view, this requires providing mobility solutions to the whole population (social population (social and territorial inclusiveness territorial inclusiveness). From a budgetary point of view, it remains to consolidate the financing of both infrastructure and public services in the services in the context of daily life.

However, the priority issue is the environment: mitigating or even the impact on the climate, in line with France's commitment to zero net carbon emissions by 2050.

This dossier addresses from several angles the topic of decarbonized mobility.

Some thirty contributions from experts of various backgrounds, which have already been already published online on the website of the the building and sustainable city social media "Construction21"(digital file digital file "Decarbonized Mobilities: issues and solutions"), the present published by Cerema is intended to perpetuate and enlarge the panel of readers.



Focused on the areas of everyday life, the cities with their periphery or even areas undergoing urbanization, the dossier proposes points of view and opens up perspectives for solutions designed for the challenges of decarbonized mobility.

It consists of the following 4 parts:

Climate issues and energy

Véhicule électrique


To save the climate, mobility must become "low-carbon".

→ This series of articles addresses the technological, societal and financial challenges of this necessary transformation, which especially concerns energy electricity and biofuels are needed, as well as hydrogen, which appears to be a promising technology.



Renewing modes of travel

Modes actifs

Promoting "low-carbon" modes of transportation the challenge is immense, as current uses are still dominated by the challenge is immense, given that current practices are still dominated by fossil-fuel vehicles and self-driving cars.

→ This series of articles deals with alternative solutions : active mobility (walking and cycling), micro-mobility (scooters and other personal mobility devices) and public transport. Public transport, both road and rail, is also an area of innovation, as well as also represent areas of innovation, as does carpooling.


Organize multi-modality and share the roadway

Voies réservées sur VSA

The great renewal of mobility uses must be supported and facilitated by the development of the road system. It is a question of reshaping traffic and parking conditions, and therefore to rethink in depth the sharing of the roadway between the different modes.

→ This series of articles discusses various solutions, including "dedicated lanes" that deserve specific attention, as well as issues related to urban logistics.



Tools for action in the territories

Co-concevoirTransforming uses, adapting local conditions for traffic, parking, and vehicle energy supply for vehicles: these are all social issues that concern every region. To decarbonize mobility, local public action must be based on solidarity and consensus.

→ This series of articles offers tools for cohesion: both assessment tools to diagnose performance and eco-design solutions, as well as consultation tools to co-design future situations.

The dossier "Decarbonized mobility: a global challenge" is available in print and a digital version can be downloaded free of charge on the Cerema website.


Download the pdf of the file  (in french) on the Cerema store :


In addition: conference "How to promote decarbonized mobility", organized by the VINCI ParisTech

Visuel conférence


On the occasion of the initial publication of the content of this dossier by the online media Construction21, researchers and practitioners shared their thoughts in a conference organized by the research lab environment lab, on 30/03/2021. The conference addressed the following topics:


Fund and deploy solutions.

Interventions by Camille Combe (La Fabrique de la City) who presented the solutions identified by different cities and states to finance decarbonized mobility, and Khadija Tighanimine (Omexom) who addressed the issue of social acceptability of electromobility and engineering of deployment where the "consumer-stakeholder" is a key figure of the innovation diffusion process.


Optimize infrastructure

Speeches by André Broto (Advisor to the Chairman of VINCI Autoroutes and coordinator of the "Mobility" strategic theme "Mobility" at the World Road Association) who presented the conclusions of the conclusions of the New Deal project, born of the international consultation organized by the Greater Paris Metropolitan Forum. Then Hélène de Solère (Cerema ) who illustrated how the CEE InTerLUD program promotes sustainable urban logistics through an approach led by the communities with economic stakeholders in their area.


Designing and evaluating soft mobility

Presentation by Anne de Bortoli (Eurovia - École des Ponts ParisTech) who presented the research conducted at the LVMT, Laboratoire Ville Mobility Transport, on the environmental impacts of of micromobility by comparing shared vehicles (velib', electric scooters and scooters) and personal vehicles. Other speakers included Jean-Paul Hubert and Jérôme Monnet (University Gustave Eiffel University) who discussed the subject of which can be favoured by a better consideration of pedestrians and their heterogeneity in the design of urban developments and transport infrastructures.


Find also the program organized on "RADIO Immo", by Construction21 !

The initial digital partnership file "Decarbonized mobility: challenges and solutions" was published online by the Construction21 media, from March 09 to 31 March 2021, at a rate of one to two articles per day.

In view of the number of online consultations, this file is one of the most successful files.

Visue Radio Immo



For its closing, Construction21 has organized a broadcast on Radio Immo, on May 10, 2021.

Animated by the journalist Kenza Braiga, she gave the floor to :


  • Two of the four editors of the dossier who presented the main orientations of the dossier: Fabien Leurent (professor at École des Ponts ParisTech and HDR researcher at the Mobility and Transport Laboratory) and Catia Rennesson, (in charge of the "Roads for a sustainable city a sustainable city" at Cerema)

  • Fabien Leurent and Aurélien Bigo (researcher associated with the Energy and Prosperity Chair) who led the debate on the challenges and levers for decarbonizing mobilities.

  • Matthieu Pochon (Independent environmental independent environmental engineer, member of the committee of Rue de l'Avenir Suisse), Camille Thomé (Director of Vélo & Territoires) and Pascal Glasson (Project Director for road management and traffic regulation at Cerema) who shared their thoughts on solutions and innovations related to a better sharing of the road.



Learn more about our partners


Logo C21





Construction21 is both a collaborative platform and an information portal and for city professionals. The platform offers case studies of exemplary buildings, districts and infrastructure, as well as thematic files elaborated with members of its community. The Construction21 France association brings together nearly 150 professional organizations and pioneering companies. Construction21 is also an international network with several national portals in Europe, China and North Africa, as well as a global platform in English. Construction21 is the organizer of the Green Solutions Awards, an international competition for sustainable solutions, in order to inspire all professionals in the sector.


The VINCI environment research lab ParisTech

Logo Lab recherche environnement VINCI ParisTECH






The Lab environment research is a research program, the result of a partnership between VINCI and three engineering schools, MINES Paris PSL, AgroParisTech, École des Ponts ParisTech, under the aegis of the Fondation ParisTech. Founded in 2008, this partnership supports research on the environmental performance of buildings, neighbourhoods and infrastructure. The environmental research lab is part of is part of a scientific sponsorship approach. The results of the research are made public and shared not only with the scientific community, but also with all economic stakeholders in the city and local authorities in order to facilitate decision-making and improve usage.