Wading line / Public facilities

In the coastal cities that have a abundant rainfall, there is a common phenomenon that the roads low-lying land was filled with puddles because of the concentrated rainfall, even a serious area causes a breakdown.
And the height of breakdown varies from different style. This sign could call attention to the diver that what's height of the water level and which type of car could though it safely.
Attention:Please turn round when the water level reach at the position as the picture shows.