The transport sector is the leading source of greenhouse gas emissions. Its environmental impact increases with the ever-growing number of journeys. To ensure we can breathe again in cities and elsewhere, the One Planet Summit players are committed to pollution-free transport.


Members in the Alliance
Communities of Interest launched with leading actors working together: green urban freight and long term strategies on transport decarbonisation


  • Presentation of the Transport Decarbonisation Alliance (TDA), a sectorial coalition to accelerate the transition towards a net-zero emission mobility system before 2050. To date, joined by:  
    • 6 Countries (Costa Rica, Finland,France, Luxembourg, Netherlands, Portugal),
    • 6 Cities and regions (Rotterdam, Lisbon, Porto, Gaia, Matosinhos, California),
    • 8 Companies (Alstom, Brisa, CEiiA, DP DHL, EDP, ITAIPU Binacional, Michelin, PTV)
  • TDA’s ambition is to become the most visible and influential forum to ensure that all transport sectors cooperate to reach the Paris Agreement’s objectives.


  • February 2018: Working meeting  in Porto to decide on: work plan,  governance and funding model
  • May 2018: Official launch at the International Transportation Forum
  • Advocate transport decarbonisation by sending an open letter to EU institutions on transport decarbonisation
  • Endorsement video by the UN SG
  • Active participation in regional UNFCCC climate weeks and UK Low emission vehicles Summit

Next steps

  • Extension of membership, while improving the geographical balance
  • Four Communities of Interest launched and active by the end of the year
  • Active engagement in 15 global and regional events, such as the GCAS, COP24...
  • Publication of 2 position papers on transport decarbonisation ambitions
  • Presentation of the TDA vision on decarbonisation pathways
  • Medium term: Joint testing of innovation
  • High level meetings with European Institutions on EU ambition
“ Without firm action the carbon emissions from transport could double by 2050 and the Paris Agreement will fail. The Transport Decarbonisation Alliance gathers countries, cities and companies with high ambition seeking to demonstrate that the global decarbonisation of transport can be achieved using solutions that exist today.”
José Mendes, Vice-Minister for environment, Portugal and TDA Chair
14 +
signatory countries since OPS 2017
50 %
objective for reduction of GHG emissions by 2050 (compared to 2008) 7


  • Launch of the “Tony de Brum”  declaration at the initiative of France: a call for ambitious progress within the International Maritime Organization (IMO) to regulate GHG emissions from maritime transport (3% of global emissions today, could increase by 50 to 250% by 2050 otherwise).
  • Declaration supported by 34 States 


  • 15 additional signatories to date (Australia, Austria, Bangladesh, Costa Rica, Croatia, Estonia, Iceland, Kiribati, Liechtenstein, Nicaragua, Palau, Peru,  New-Zealand, Tunisia, Ukraine).
  • March 26th event with Minister  Elisabeth Borne ahead of the IMO negotiations to rally new signatories
  • Adoption of the initial strategy at IMO  in April 2018, which aims to reduce GHG emissions by at least 50% by 2050 (compared to 2008). 

Next Steps

October 2018: beginning of the IMO negotiations to adopt measures for the implementation of the initial strategy aiming to reduce GHG emissions by at least 50% by 2050

"Maritime transport must play its full part in reducing GHG emissions. IMO is the right framework and the States must be ready to commit, without delay, from 2018, to an ambitious goal supported by effective measures. These measures must allow fair competition between the pavilions and take into account the situation of the most vulnerable states."
Elisabeth Borne, Minister in charge of Transport by the Minister of State, Minister of Ecological and Solidarity Transition, France