The Report Transport in Nationally Determined Contributions (NDCs) that was published ahead of the 23rd Conference of the Parties (COP23) in Bonn, Germany summarises case study findings from rapidly-motorising countries, including Bangladesh, Colombia, Georgia, Kenya, Nigeria, Peru and Viet Nam. It highlights the shared challenges they face in developing and delivering greenhouse gas mitigation actions within expanding transport sectors. These include the impact that a lack of transport data is having on sectoral climate action and the need for increased buy-in from key transport stakeholders to achieve countries’ climate change commitments. The report also highlights the need to build climate change expertise within transport authorities, and for greater alignment between NDCs and national transport sector strategies.