Heat waves have become a recurring challenge in urban areas around the world. These prolonged periods of extreme heat not only pose risks to human health but also put pressure on urban infrastructure, including transport systems. In this booklet, we delve into the impact of heat waves on cities and urban transport and explore the essential measures and adaptations needed to create cooler and more resilient urban environments. With a specific focus on transport, we uncover innovative strategies to mitigate heat-related issues and ensure comfortable and efficient mobility for city dwellers.