Role of Public Transportation in Reducing Traffic Congestion, Enhancing Connectivity, And Promoting Sustainable Urban Development in Manchester And Shenzhen

The purpose of this research is to assess the strategies of Manchester, UK, and Shenzhen, China regarding the transportation infrastructure, and more specifically, the part that is played by public transport in the fight against congestion on the roads, the provision of better connectivity, and the support of sustainable growth in cities. Manchester’s strategy includes using integrated PT systems, extending the Metro Link tram system, and using digital infrastructure in terms of connectivity as well as improving the experience of the users, targeting the achievement of carbon neutrality by 2038. Shenzhen has expanded its metro system and explored new ways of funding with models like “rail + property” which means that metro station development is combined with the construction of related properties to support the growth of the rail transit system and bring in revenues. Also, the incorporation of AI by the Shenzhen transportation system coupled with the electrification of the transport fleet demonstrates the city’s support for green mobility solutions and environmental conservation. The research questions relate to the policy, planning, and governance aspects that have supported the implementation of PTN integration in these cities and the outcomes of these policies on the modal split, traffic congestion, and greenhouse gas emissions. Based on the TOD theory, the paper examines how Manchester and Shenzhen have integrated transportation investments with urban development plans. The study reveals that both cities have effectively expanded the modal shares of public transport and improved the journeys to reduce congested traffic. Shenzhen increased its size in the fastest way and has made the city more habitable and less polluted while Manchester has some difficulties because of the past legacies of infrastructure and the increasing use of private cars. The cases of Manchester and Shenzhen are informative of proper transportation infrastructure development, emphasizing planning, governance, and innovative financing. Thus, by focusing on public transportation and sustainable development, cities around the world can improve the connectivity, quality of the environment, and economic development as well as the creation of sustainable and successful urban societies.