The pursuit of efficient, sustainable, and inclusive urban mobility has led to the increased adoption of smart public transport solutions across emerging economies. In Nigeria, rapid urbanization and increasing mobility demands have placed significant pressure on conventional transport systems. This has resulted in chronic congestion, inefficiency, and infrastructural decay. This paper offers a comparative analysis of smart public transport adoption by examining the implementation and performance of Bus Rapid Transit (BRT) systems in Lagos and Kaduna. Two cities with distinct socio-economic and governance contexts. As the commercial capital of Nigeria, Lagos has taken the lead in adopting BRT and integrating smart technologies, such as e-ticketing, tracking, and real-time fleet monitoring. The city features dedicated lanes in the corridors, achieved through institutional reforms and public-private partnerships. In contrast, the adoption of the BRT system in Kaduna is still at an early stage. This is due to localized governance, inadequate infrastructure, and modern stakeholder frameworks. Empirical data were sourced from policy documents, operational reports, peer-reviewed literature, and stakeholder interviews. The research indicates that critical enablers and barriers influence the adoption and sustainability of the BRT system in both states. Investment in digital infrastructure and technological equipment is important. Institutional capacity, standardization of regulation, community engagement, and political will also play critical roles in achieving functional and resilient urban transportation systems. The investigation concludes that the experience of smart public transport through the BRT in Lagos can be replicated in other Nigerian cities. This could help attain the vision of sustainable urban development.