The Child Health Initiative is a collaboration of organizations advocating for children and adolescents to have safe and sustainable mobility. The paper, written by the FIA Foundation, discusses the need for transformational change in reducing road traffic deaths and injuries. The COVID-19 pandemic has highlighted the importance of sharing roads equitably and promoting walking and cycling. The 2030 Manifesto aims to transform streets into safe, child- and climate-friendly neighborhoods, implement the Safe System, and ensure safe and healthy journeys for children and youth. The practical measures outlined in the manifesto represent a "speed vaccine" to address the global issue of road traffic deaths and injuries.