In Makkah, Saudi Arabia, a hydrogen fuel cell bus trial has been initiated as part of a memorandum of understanding between the Royal Commission for Makkah City and Holy Sites and the Ministry of Energy. This pilot project aims to explore the potential applications of hydrogen in transportation on designated routes. Various entities such as the Transport General Authority, General Directorate of Civil Defense, and General Department of Traffic are collaborating to ensure the success of this project. The primary goals of the initiative include gaining commercial and technical expertise in hydrogen technology, enhancing public awareness, and potentially expanding the project in the future. By introducing clean energy-based transportation solutions, Makkah aims to improve the quality of life and reduce emissions in line with Vision 2030 objectives. Additionally, the project seeks to enhance services for pilgrims and Umrah performers by providing a more sustainable and efficient public transportation system. The hydrogen bus trial is integrated into the larger Makkah Bus Project, with a focus on security and safety. An operational plan has been implemented to run buses along specific routes and utilize a mobile hydrogen fueling station. The evaluation of the trial will consider various aspects such as efficiency, performance, sustainability, cost-effectiveness, and passenger comfort to ensure the successful integration of hydrogen fuel cell buses into Makkah's transportation system.