This book presents 57 peer-reviewed papers from the 12th Conference on Traffic and Granular
Flow (TGF) held in Washington DC in July 2017. It offers a unique synthesis of the latest
scientific findings made by researchers from different countries institutions and
disciplines.The research fields covered range from physics computer science and engineering
and they may be all grouped under the topic of Traffic and Granular Flow. The main theme of the
Conference was: From Molecular Interactions to Internet of Things and Smart Cities: The Role of
Technology in the Understanding and the Evolution of Particle Dynamics.