The Transport Deep Decarbonization Pathways Project (DDPP-T), an initiative of the Institute for Sustainable Development and International Relations (IDDRI), aims to demonstrate how countries can transform their transport system by 2050 in order to implement a deep reduction in their greenhouse gas emissions, consistent with ambitious climate goals.The DDPP-T builds on the Deep Decarbonization Pathways Project (DDPP), which analyzed the deep decarbonization of energy systems in 16 countries in the lead-up to COP21.
The two projects share key principles. The analysis is conducted at a country scale, by in-country research teams, working independently of their governments. It adopts a 2050 time horizon to reveal the short-term requirements of long-term climate and development objectives. Finally, country research teams openly share methods, modelling tools, data and results in order to enable knowledge sharing among project partners in a highly collaborative way and to facilitate engagement with sectoral experts and decision makers.
Here is the japan DDP-t report