Drainage Services Department reveals smart sensors to collect data from stormwater drain manholes and robots to aid in underground pipeline inspections.
Hong Kong issues amber rainstorm warning on Tuesday morning amid week of unstable weather thestar.com.my - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thestar.com.my Daily Mail and Mail on Sunday newspapers.
Flood barriers and sandbags installed at vulnerable points around the city as Observatory says Koinu closest point will be 150km south of city on Sunday