Whether for rigid or flexible road systems, this type of construction can increase the lifespan of the road. In transportation infrastructure such as railways and highways, the safety protection and service life of engineering projects are closely related to their own drainage systems. Among them, geosynthetics are a crucial component of drainage systems, and three-dimensional composite drainage networks are a new type of geosynthetics. The composition is a three-dimensional geotextile core, with needle punched non-woven geotextile adhered to both sides.

After the road ages and cracks appear, the vast majority of rainwater will enter the section. In such cases, the three-dimensional composite drainage network can be directly laid under the road, replacing the drainage foundation. The three-dimensional composite drainage network can prioritize the collection and organization of water before it enters the foundation/subbase layer. And it can also wrap a layer of film at the bottom of the three-dimensional composite drainage network, further preventing water from entering the foundation.