The book "Internationally Harmonized Test Scenarios for Automated Driving" by Silvia Thal provides a comprehensive analysis of the testing methodology for automated driving systems, particularly in urban environments. It addresses automation level 4, where no human driver is required, and the system assumes full responsibility for safe vehicle operation. With the absence of a human driver, an additional safety proof for the system's collision-free operation becomes necessary. The dissertation highlights the scenario-based testing methodology, which is based on real traffic data, and offers innovative approaches for detecting urban scenarios as well as data-driven generation of test cases. The results are based on an extensive driving study and contribute to the international harmonization of methods and test scenarios.