In the context of increasing urban mobility demand and the need for sustainable transport systems, the structural characteristics of public transport networks have become a key research topic. Beyond network expansion, improving the network structure and topology is essential for ensuring reliable and resilient mobility services.

This paper focuses on the analysis of topological properties of urban public transport networks, with particular emphasis on network connectivity. Connectivity is a fundamental characteristic that influences the ability of a network to maintain functionality under disruptions and to ensure efficient distribution of flows within the network.

The study investigates specific graph theory indicators, such as connectivity indices and topological coefficients, in order to evaluate the robustness and resilience of the transport network. A case study is conducted on the Bucharest public transport network, highlighting the role of connectivity in enhancing network reliability and operational performance.

The results demonstrate that higher levels of connectivity contribute to increased network resilience and improved capacity to withstand disruptions. The findings underline the importance of integrating topological analysis into transport planning processes, supporting the development of more efficient and sustainable urban transport systems.