Gravel car parks provide a solid, stabilised and free-draining surface suitable for cars, vans, trucks, coaches and lorries. Gravel is often specified for use as the permeable paving surface for car parks, with the open structure of gravel providing a free draining surface which allows rainwater to permeate through to the sub-base.
With the correct construction and drainage systems, a porous gravel car park can be part of a SuDS system through natural infiltration of the rainwater into the sub-base, or through an attenuation system.
The use of a porous plastic paving grid is commonly used to create a retained gravel surface. The cellular structure of the plastic grids retain the gravel by creating an interlock, limiting the amount of gravel that can be displaced by vehicle tyres.