Let me introduce a design which you can casually see.
Today, I would like to introduce “Pavement blocks”.
The image below shows the perspective view (Image 1) and a reference diagram showing the usage (Image 2).
In the usage diagram, there is the green area (緑化部) between the pavement blocks(本物品) which makes the pavement block like force behind the edge because you can only see the surface with your eyes.
It is Japanese Design Registration No. 1417594.
If you are interested in the registered information, see the following link (J-PlatPat) for more information. (shou)