Road isolation device

The invention discloses a road isolation device, and aims to overcome the defects that an existing road isolation device does not have a buffering function, and damage is large when an automobile collides with an isolation pier. Several isolation piers are included. An isolation rod is connected between the adjacent isolation piers, the isolation piers comprise shells, reinforcing cylinders are arranged in the shells, mounting rib plates are connected between the reinforcing cylinders and the inner walls of the shells, buffering units are mounted on the left side and the right side in the isolation piers, each buffering unit comprises a plurality of buffering elastic pieces, and the buffering elastic pieces are inserted into the mounting rib plates; the height positions of the upper ends of the buffering elastic pieces are sequentially decreased, the distances from the upper ends of the buffering elastic pieces to the inner wall of the shell are sequentially increased, the upper ends of the buffering elastic