The world faces two urgent challenges: eradicating poverty through economic development, and tackling climate change. Sustainable transport is crucial to both. In August 2014, the UN Secretary-General established a High-Level Advisory Group on Sustainable Transport to make policy recommendations that 'promote accelerated implementation of sustainable transport.' The World Bank is a member of the technical working group supporting the advisory group, which sees sustainable transport as a prerequisite for all countries to attain competitiveness, inclusive and equitable growth, balanced social and spatial development, and energy and food security. And it is essential to reducing greenhouse gas emissions in support of the 2°C Scenario. Progress can be accelerated if all heed the calls for action on sustainable transport and development that exist today in a wide range of international agreements, conventions, and declarations.