Flood Traffic Light / public facilities

When road is flooded, it is hard to tell how deep the water is. Risky drivers may hence get stuck in the flood with careless attitude to water deep. This can make a serious damage to vehicles.
To prevent life and financial damages, we take original traffic light to evolve into "Flood Traffic Light" as a solution. When flooded, original traffic signal will be replaced by yellow arrows. Driver can see this indicator to turn before get into dangerous zone.