PERVIOUS effectively reduces tire noise, as well as engine-generated noise from vehicles. When it rains or in a downpour, hydroplaning is greatly reduced if not eliminated and visibility of pavement markings is dramatically improved compared to normal pavement.

RUBBER ROLLED ASPHALT is an anti-freezing pavement where special pre-coated synthetic rubber chippings, instead of stone chippings, are spread and intruded into the surface of flexible asphalt pavement.

SPEEDSAVE is the road surface on which the smooth sine wave form is formed continuously. It produces a shake by resonance only to the vehicle which exceeds the speed limit, which gives displeasure to the driver and urges the driver to control speed.