Security isolation fence for road

The utility model discloses a security isolation fence for road, including installing the support column in the middle of the road, an installation cavity is all seted up to the medial surface of support column, set up two sets of locking device in the installation cavity, every locking device of group all includes a solid fixed splint and activity splint, a formation draw -in groove between solid fixed splint and the activity splint, and the interior fixed mounting isolated column of draw -in groove, the centre that is located the installation cavity sets up a baffle, one side of activity splint sets up a slider, and the slider sets up in the horizontal spout that the installation cavity inner wall set up, the relative baffle of activity splint one side is provided with two first spouts, the outside both ends of baffle are provided with two second spouts, two rows of bracing pieces of installation between activity splint and the baffle. The utility model discloses simple structure, when using, if vehicle impact to separation blade, whole separation blade is crooked, makes a concession the use as a buffering, prevents that the vehicle from because of inertial force strikes the condition that other lane is gone into to the bullet, using safelyr.