CHANAkYA is a comprehensive game-theoretical framework for pricing and tradable credit charging in complex transportation systems. It models strategic interactions among public authorities and private mobility providers, while incorporating multimodal travel options and heterogeneous traveller demographics. It supports link- and path-based tolls, alongside equivalent tradable credit schemes and allows demographic-differentiation. Additionally, the framework addresses the non-uniqueness of user-equilibrium path flows by incorporating player-specific perspectives. Five policy-driven case studies inspired by Leuven demonstrate its applications. Results indicate an optimal cordon toll of approximately & euro;1 and a near-zero optimal bus fare, producing substantial efficiency gains over the base scenario. Age-differentiated tolling offers only modest efficiency improvements while raising equity concerns. Tradable credit schemes replicate the efficiency gains of pricing. Further cases reveal efficiency losses from privatizing public transport and show how the government's perspective influences optimal policies. Overall, CHANAkYA supports nuanced, effective, and equitable transport planning across complex strategic and multimodal settings.
