The population of Guatemala City continues to grow, but its infrastructure has been frozen for decades. Traffic has never been worse. This book project engages Guatemala City from the perspective of traffic to realign conversations on security, mobility, and infrastructure in Latin America, with an interest in assessing circulation as a metric of security. It is a book project that dovetails with an ongoing research collaboration between the Centre for Diaspora and Transnational Studies at the University of Toronto, the Latin American and Caribbean Centre at the London School of Economics, the Institute on Inequality and Democracy at the University of California, Los Angeles, and the Centro Interdisciplinario de Estudios sobre Desarrollo at the Universidad de los Andes in Bogotá, Colombia.