You will no longer worry about the waiting time for using the restroom in Shanghai as a smart guiding system for public toilets has been introduced at Hongqiao Railway Station. /CNS Photo

Users can know the occupancy rate of each toilet through screens mounted on the wall outside restrooms in the station. When the icons on the screen are red, users can decide to use other toilets instead of waiting in line. /CNS Photo

A total of five sets of screens have been installed at this station. A cleaner said that there had been a drop on the number of people lining up outside restrooms since the system had been implemented. /CNS Photo