Permeable pavements are also known as green pavements. They may refer to different types of eco-friendly pavements and other surfaces like parking lots, backyard service roads created to suit different conditions such as hot climate, and vehicular movement. Permeable pavements are panels, natural as well as eco-friendly artificial ones, which are used instead of storm-water drains systems in sidewalks, streets, and parking lots. A permeable pavement as the name suggests helps water to permeate into the ground since it is porous and allows water to seep-in. It is quite unlike traditional concrete and asphalt pavement which do not let water to percolate into the ground beneath and thereby increase surface run off which eventually causes flooding.