目前的高速公路路面容易积水，车辆高速行驶时，轮胎和路面间形成的水膜会使轮胎打滑，造成车辆失控。日本道路公团正在全国高速公路上推行“高功能铺设”的新施工法，即在铺设沥青路面时使沥青发泡形成空隙。这种保留空隙的路面容易吸收雨水，并通过路面和混凝土路基的间隙将 Current highway pavement easy to water, high-speed vehicles, the film formed between the tire and the road surface will make the tire slip, causing the vehicle out of control. The Japanese Road Corps is launching a new “high-performance laying” construction method on the national expressway, in which asphalt is foamed to form voids when laying asphalt pavements. This gap-retaining pavement absorbs rain easily and passes through the gap between the pavement and concrete subgrade