Transport is playing a greater role in COP21 than in past UNFCCC conferences as a critical part of the solution: a sector that can contribute to both reducing greenhouse gas (GHG) emissions and building economy wide resilience to the impacts of climate change. In view of the sector’s potential, the heavily debated transport question is how to sustainably meet the rising global demand for greater interconnectedness and mobility. The World Bank and the seven other leading multilateral development banks have joined forces with the Paris Process for Mobility and Climate (PPMC) and the rest of the transport community to call for more action on transport and climate change.