The purpose of this document is to provide responsible authorities with tools to find their way out of the institutional labyrinth and, overcome barriers, and finally enable themselves to design and implement adequate sustainable transport policies following ASI strategies. For this purpose, the role of Leading Transport Agencies (Changhwan MO, 2014) is pivotal. Metropolitan Transport Executives (MTE) is a generic term to designate such leading agencies that have in common to effectively coordinate and execute on a tactical level the sustainable transport strategies decided and supported by all the responsible political authorities. This toolbox draws on the experience of the public transport industry, urban planners, and policy makers around the world. It focuses on the structure and governance of mobility services and transport systems. It is complementary with the guidelines for the elaboration of Sustainable Urban Mobility Plans (SUMP), which develop the concept and practice of integrated and inclusive planning processes in greater detail.