Flexible guardrail for expressway

The speedway soft guardrail of the utility model relates to a speedway guardrail. In order to avoid the generated damage when vehicles collide with the guardrail, at the same time to play the function to effective road separation and clear sigh, the utility model comprises an upright column and a fencing column, and is characterized in that the upright column comprises an upright column pipe with good flexibility and a container pipe with the inner that can be aerated, the container pipe can be provided with a plurality in parallel inside the upright column to appear buddle shape, and can also be provided with three container pipes appearing spiral shape to paste on the wall part of the upright column. If vehicles collide with guardrail happens, the aerated guardrail immediately falls on the ground with hurting vehicles and the people, after that the guardrail goes back to the original position to continually play the function of guardrail. The production cost and the maintenance cost of the utility model are all greatly below existing speedway guardrail. The utility model can be used according to the needs of different speedway section, and can also be used together with the electric monitoring system.