This lecture explores the concept of sustainable cities, focusing on urban mobility and transportation in African cities. It covers the definition of sustainable cities, the conditions for urban sustainability, and the approach to mobility for sustainable cities. The importance of resilience, ecological considerations, safety, inclusivity, and good governance in urban planning are discussed. The lecture emphasizes the need for a multimodal transportation system, inclusivity for women, youth, and people with reduced mobility, and a public transport system with low carbon emissions.