Hanoi is accelerating digital transformation and applying science and technology to urban governance with the core goal of serving the people and improving management efficiency. Hà Nội Mới•07/09/2026 The deployment of utilities such as the "Flooding Map," autonomous vehicles operating under a sandbox mechanism, and the Hanoi Smart Police application demonstrates the commitment to building a safe, smart, and transparent capital city. From a "shield" against natural disasters to the foundation of future transportation. In the context of complex global climate change, frequently facing unusually heavy rainfall causing localized flooding and severe traffic congestion, the Hanoi Department of Science and Technology has launched the mini-app "Flooding Map," a specialized utility directly integrated into the iHanoi Digital Citizen platform, to address this problem. Unlike scattered information sources on social media, the "Flooding Map" is built on a proprietary data platform, directly connected via API to the monitoring system of the Hanoi Drainage Company (HSDC). The application provides accurate, real-time technical parameters such as location coordinates, rainfall amount, and flood depth in meters. Right on iHanoi, users can easily switch between the Hanoi base map or Google Maps, and simultaneously track the risk classification scale using intuitive colors, from green representing a safe level to purple corresponding to a severe level. The breakthrough of this utility lies in its ability to personalize the user experience. When a flooded area is touched, the system will display a detailed information window, allowing people to proactively change their travel route. Users can also customize the alert radius from 1km to 100km and the time frame to suit their personal schedule. As soon as the first flooding point appears, the system will automatically send a push notification to the device. The Department of Science and Technology stated that the application is expected to be a "digital