Satisfaction, loyalty, and Quality of the public transport are three factors largely correlated. The focus of this research is the analysis of the quality attributes proposed in the contracts of service by transport authorities and is part of an early-stage study conducted by Hitachi Rail. Monitoring and improving services are of utmost importance to reduce car use and promote sustainable urban mobility. Thus, the evaluation and enhancement of service quality in public transport are crucial priorities for most public transport operators. The methodology of this research provides two steps: • a detailed examination of various documents, contracts, and reports related to public transport services to understand: a) the quality indicators monitored by different operators; b) assess the commonality among these indicators; and c) analyse how operators measure and report the quality of their services; • investigation of the differences and similarities in reporting frameworks between different operators, providing insight into unique approaches and practices in the public transport sector.