Billboards turn into rafts during floods, to bring stranded people home.
Rain = Flood
During rainy season, flash floods have become a way of life in many Asian cities. We're not talking of major typhoons, just heavy rains are enough to submerge up to 90% of Metro Manila, Philippines; and 60% of Thailand including Bangkok. Although the water is usually just knee deep to waist deep, it keeps people stranded for hours. Floods affects an estimated 11 million residents in Metro Manila alone.