月牙形路障 / Crescent roadblocks

This is a humane roadblock, it can not only make barricade itself more powerful, but also adds other interesting features.
There are two circular LED lights and one solar cells in every barricade. in the evening, light emitting reminds passers by its own system where danger is. Its front and back has a jack and can be spliced to each other. `There is a soft seat surface on top of it and you can sit down comfortably .it can be superimposed to each other and they can be better placed to save more space because of its crescent shape.