Sign up for
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
When there is a urban waterlogging, people are not aware of the realtime situation of road, uncovered sewers are specially dangerous. In our design, when sewer lids are missing or removed, the toroidal buoy under the lids will float above the sewers as the water level goes up. It can alert pedestrian and reduce accidents.