As digital technology continues to develop rapidly,the information construction of rail transit is undergoing unprecedented changes.The traditional mode of decentralized and repeated construction of information systems no longer conforms to the trend of technological development,and it is necessary to build a universal and shared information infrastructure.Based on expounding the digital infrastructure of rail transit and its orientation,composition,and application scenarios in the information architecture,and taking the Shanghai metro as the background,this article discusses the overall planning of the digital infrastructure from the perspective of the re-layout of the digital productivity of rail transit and conducts research on the core key points that need to be focused on in the process of digital infrastructure planning,such as a cloud-data foundation platform,disaster redundant system,fundamental communication network,etc.,in order to optimize and upgrade the existing information architecture of rail transit,comprehensively rebuild the layout of digital productivity,and promote the digital transition of the industry.
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