Many cities are planning to expand their public transport systems through network expansions and introducing a new high-demand public transport mode. The transition to green mobility is also taking place at a rapid pace. Given these opportunities, cities should integrate their public transport systems to provide seamless travel for customers as an alternative to private modes. Policymakers, municipal officials, and transport operators must work together to plan and operate these public transport systems. While integrated public transport systems are a critical part of any strategy to improve urban mobility, there is no single model of an integrated public transport system. This Guidebook discusses the different approaches which policymakers and transport operators can choose from to achieve integrated public transport systems.