Rotatable warning board for middle division zone of expressway

The utility model relates to a rotatable highway zoning warning board which comprises a base plate fixed on the ground and a warning sign board, a rotating air cylinder is fixed on the base plate, a box body is fixed at the output end of the rotating air cylinder, the warning sign board is located in the box body, and the warning sign board is fixed on the base plate. A power assembly enabling the warning identification plate to ascend and descend is arranged in the box body, the power assembly is electrically connected with a power source arranged at the bottom of the box body, and a cover plate is hinged to an end opening of the upper end of the box body. The warning board can be lifted by a certain height when the signboard is arranged in the central separation zone, vehicles on the highway can be warned in the construction and maintenance process of the highway, steering of the signboard can be achieved without manual operation when construction and maintenance are carried out in a lane changing mode, and